Class / Patent application number | Description | Number of patent applications / Date published |
381063000 | Reverberators | 62 |
20080232603 | SYSTEM FOR MODIFYING AN ACOUSTIC SPACE WITH AUDIO SOURCE CONTENT - An audio signal processing system is configured to separate an audio signal into a dry signal component and one or more reverberant signal components. The dry signal component and the reverberant signal components can be separately modified and then recombined to form a processed audio signal. Alternatively, the dry signal component may be combined with an artificial reverberation component to form the processed audio signal. Modification of the reverberation signal component and generation of the artificial reverberation component may be performed in order to modify the acoustic characteristics of an acoustic space in which the audio signal is driving loudspeakers. The audio signal may be a pre-recorded audio signal or a live audio signal generated inside or outside the acoustic space. | 09-25-2008 |
20080273708 | Early Reflection Method for Enhanced Externalization - Scenes having at least one simulated sound source and simulated sound-reflecting objects are simulated by processing a direct-sound signal with at least one head-related transfer-function, thereby generating a simulated direct-sound signal, and generating simulated early-reflection signals from the simulated direct-sound signal, including simulating early reflections having incidence angles different from the incidence angle of the direct-sound signal. Externalization of the simulated sound source is enhanced. | 11-06-2008 |
20080292108 | DEREVERBERATION SYSTEM FOR USE IN A SIGNAL PROCESSING APPARATUS - A system used in a loudspeaker-room-microphone environment includes a microphone signal partitioner that divides a signal from a microphone into one or more divided portions. A reverberation energy estimator estimates reverberation energy in some of the divided portions of the microphone signal based on a loudspeaker signal. The estimated reverberation energy is processed to generate a dereverberated output signal. | 11-27-2008 |
20080317253 | Audio processing systems - An audio processing system comprising processing devices and a processing module. The processing devices generate output signals, and the processing module calculates the output signals from the processing devices and generates an output result signal. Each processing device comprises a control module, a timing generation module, a memory module, and a conversion module. The control module receives an input control signal and generates a first control signal and a second control signal. The timing generation module is coupled to the control module and generates a timing signal according to the second control signal. The memory module is coupled to the control module and the timing generation module. The memory module receives and stores an audio signal and generates a memory signal according to the first control signal and the timing signal. The conversion module is coupled to the memory module and converts the memory signal to the output signal. | 12-25-2008 |
20090003614 | Apparatus and method for artificial reverberation - An apparatus and method for artificial reverberation having one or more input summing nodes receiving an input signal and which each feed a first series of delay elements and the output of which is thereafter summed, weighted, and fed back to the input summing nodes. Also, a feedback summing node which further feeds a second delay element which feeds an output with a signal which has multi-dimensional or multi-delay reverberation relative to the input signal. An alternative embodiment further feeds one or more of the first delay element outputs weighted via an output gain to an output summing node which also sums the output of the second delay element and provides a summed output having a multi-dimensional or multi-delay reverberation. The embodiment is easily and economically implemented via conventional integrated electronic circuits, a combination of analog and digital electronics, digital signal processors, microprocessors, micro-controllers, or computer algorithms. | 01-01-2009 |
20090052681 | SYSTEM AND A METHOD OF PROCESSING AUDIO DATA, A PROGRAM ELEMENT, AND A COMPUTER-READABLE MEDIUM | 02-26-2009 |
20090052682 | Engine sound processing apparatus - An engine sound processing apparatus includes an engine sound signal generating section that generates an engine sound signal indicating an engine sound generated in an engine room of a vehicle, a signal processing section that includes a reverberation effect applying portion which applies a reverberation effect to the engine sound signal and a mixing portion which mixes the engine sound signal to which the reverberation effect is not applied and the engine sound signal to which the reverberation effect is applied, a reverberation effect controlling section that instructs the reverberation effect applying portion to apply the reverberation effect to the engine sound signal, a mixing balance setting section that sets a mixing balance in the mixing portion, and a speaker that outputs a sound on the basis of the engine sound signal being output from the signal processing section. In a case that both of an accelerator opening and an engine speed are increased, the mixing balance setting section controls an occupation rate of the second engine sound signal in the engine sound signal so as to be increased as the engine speed is increased. When other than the case, the mixing balance setting section controls the occupation rate of the second engine sound signal in the engine sound signal so as to become zero. | 02-26-2009 |
20090154716 | SYSTEM AND METHOD FOR SOUND SYSTEM SIMULATION - A sound system design/simulation system provides a more realistic simulation of an existing venue by matching a measured reverberation characteristic of the existing venue and adjusting one or more acoustic parameters characterizing the model such that a predicted reverberation characteristic substantially matches the measured reverberation characteristic. | 06-18-2009 |
20090220100 | Reverberation adjusting apparatus, reverberation adjusting method, reverberation adjusting program, recording medium on which the reverberation adjusting program is recorded, and sound field correcting system - The present invention provides a sound field correcting system and a reverberation adjusting apparatus capable of correcting a reverberation time characteristic by an easy operation without setting a complicated parameter. A surround system | 09-03-2009 |
20090245526 | DEVICE FOR AND METHOD OF ADDING REVERBERATION TO AN INPUT SIGNAL | 10-01-2009 |
20090262949 | MULTI-CHANNEL ACOUSTIC SIGNAL PROCESSING DEVICE - Provided is a multi-channel acoustic signal processing device by which loads of arithmetic operations are reduced. The multi-channel acoustic signal processing device ( | 10-22-2009 |
20090304196 | Wireless vocal microphone with built-in auto-chromatic pitch correction - A series of signal processing features incorporated into its design that is both functional and decorative, to enhance convenience and performance among vocalists. A hollow, cylinder shaped body is oriented lie a conventional microphone, featuring a cardioid pickup pattern and a dynamic diaphragm, as well as a three-pin/XLR connector, a grill, and an integral pop filter. A transmitter handling the conversion of the audio signal into a radio signal and broadcasts it through an antenna, is built into the handle of the microphone, resulting in a wireless microphone that is slightly larger than a standard wired microphone. The microphone also has a shock-absorption system that reduces noise while the microphone is being handled buy the vocalist during a performance. | 12-10-2009 |
20100008513 | METHOD AND SYSTEM FOR AUTOMATICALLY GENERATING WORLD ENVIRONMENT REVERBERATION FROM A GAME GEOMETRY - Reverberation parameters for one or more positions of interest are derived from graphics data used for displaying a computer-generated environment. For each position of interest for which reverberation parameters are desired, environmental parameters including distances and the hardness of features in a range of interest and at points on cubemap faces are automatically determined from the graphics data. The environmental parameters are stored with the graphics data and associated with each position of interest. Upon rendering of the computer-generated environment, reverberation property set values usable by a reverberation engine are calculated or interpolated between predetermined values according to the environmental parameters. Thus, values such as reverb, reverb delay, reflections, decay time, reflection delay, and other reverb parameters are automatically calculated, subject to selective operator tuning, and provide realistic reverberation effects in the sounds heard by a user who is experiencing the rendered environment. | 01-14-2010 |
20100027801 | Impulse Response Processing Device, Reverberation Applying Device and Program - In an impulse response processing device, a waveform dividing part divides a waveform of an original impulse response into a plurality of blocks on a time axis. A time adjusting part performs a time adjustment to reduce a time difference between successive ones of the blocks. A waveform synthesizing part generates a waveform of a new impulse response by adding the blocks on the time axis after the time adjustment by the time adjusting part. Further, a windowing part performs a windowing process to multiply each block by a window function having a window width corresponding to a width of the block, a function value of the window function decreasing from a center to both ends of the block. The waveform synthesizing part generates the new impulse response using the blocks after the windowing process by the windowing part. | 02-04-2010 |
20100092002 | SOUND FIELD REPRODUCING DEVICE AND SOUND FIELD REPRODUCING METHOD - The sound field reproducing apparatus includes: a signal obtaining unit which obtains input audio signals of plural channels; an effect adding unit which gives an effect on an output to a sound field; and an effect amount control unit which controls an amount of the effect based on a characteristic of the input audio signal. The sound field reproducing apparatus receives input audio signals of plural channels from a medium such as a DVD, and gives a sound effect to them to output. The amount of the effect given to the input audio signal is controlled based on the characteristic of the input audio signal, especially the cross correlation of the reverberation component between the channels. | 04-15-2010 |
20100119075 | SPATIALLY ENVELOPING REVERBERATION IN SOUND FIXING, PROCESSING, AND ROOM-ACOUSTIC SIMULATIONS USING CODED SEQUENCES - Methods and systems for simulating at least one room impulse response between two or more sound sources and two or more receivers positioned in an enclosure are provided. At least one early impulse response is generated that includes early reflections from the two or more sound sources to at least one of the receivers. At least one late impulse response is generated including a reverberation portion. The late impulse response is generated to spatially shape the reverberation portion corresponding to a spatial parameter of the enclosure. The at least one early impulse response is combined with the at least one late impulse response to form the at least one simulated room impulse response. | 05-13-2010 |
20100172508 | Method and apparatus of generating sound field effect in frequency domain - A method and apparatus of generating a sound field effect is provided. The sound field effect generating apparatus may generate a frequency coefficient that is frequency-transformed from a direct signal, may generate a reflection signal from the frequency coefficient, may generate an output signal using the frequency coefficient and the reflection signal, and may perform an inverse-frequency transform of the output signal. | 07-08-2010 |
20100183162 | ECHO MODULATION METHODS AND SYSTEMS - Methods and systems for echo modulation are described. In one embodiment, intensities of a plurality of values in multiple windows of an audio signal may be obtained. The windows may be subject to a periodic boundary condition. A plurality of echo values may be calculated for each of the respective windows. The audio signal may be altered in one or more of the windows using a windowing function and echo values. Additional methods and systems are disclosed. | 07-22-2010 |
20100296662 | SOUND SIGNAL PROCESSING DEVICE AND METHOD - In reverberant environments, reflected waves including an echoic sound and a muffled sound affect and disable recognition of sound arrival directions. As a result, the subjective clearness of the sounds deteriorates. In order to enhance the clearness of a reproduced sound in a reverberant environment, a pre-processing filter unit corrects an input sound signal portion having a frequency band relating to human auditory recognition on a sound wave arrival direction, and speakers reproduce the sound signal. The correction involves attenuating an input sound signal in the frequency band portion, based on the relationship between the frequencies of the input sound signal and the magnitude of influence to the recognition of the sound wave arrival direction. This attenuation is achieved by filtering using filter coefficients that are set by a first filter characteristic setting unit using hearing characteristic parameters that are set by a hearing characteristic setting unit. | 11-25-2010 |
20100322431 | METHOD FOR REPRODUCING NATURAL OR MODIFIED SPATIAL IMPRESSION IN MULTICHANNEL LISTENING - The invention concerns a method for reproducing spatial impression of existing spaces in multichannel or binaural listening. It consists of following steps/phases: a) Recording of sound or impulse response of a room using multiple microphones, b) Time- and frequency-dependent processing of impulse responses or recorded sound, c) Processing of sound to multichannel loudspeaker setup in order to reproduce spatial properties of sound as they were in recording room, and (alternative to c), d) Processing of impulse response to multichannel loudspeaker setup, and convolution between rendered responses and an arbitrary monophonic sound signal to introduce the spatial properties of the measurement room to the multichannel reproduction of the arbitrary sound signal, and is applied in sound studio technology, audio broadcasting, and in audio reproduction. | 12-23-2010 |
20110064235 | MICROPHONE AND AUDIO SIGNAL PROCESSING METHOD - A microphone includes a housing with a user interface configured to allow selection of a voice modification. The voice modification includes at least one of distortion, delay, reverb, auto tune, pitch, and phase. An audio to electric signal converter is at least partially enclosed in the housing and is configured to convert sound vibrations into an electric voice signal. A control module is configured to generate a signal indicative of a desired sound as a function of the modification signal and the electric voice signal. | 03-17-2011 |
20110081025 | EFFICIENT FILTER FOR ARTIFICIAL AMBIENCE - A circuit, method, and system for producing artificial ambience effect for an input audio signal, mono, stereo, or surround. The ambience effect enhances artificial reverberation, replaces artificial reverberation, or synthesizes extra audio channels, such as surround channels. The circuit may include a transient reduction module and a reverberation filter. The transient reduction module may be adapted to reduce transients in an input audio signal of one or more channels. The reverberation filter maybe adapted to receive a transient-reduced signal of one or more channels corresponding to the transient-reduced signal. | 04-07-2011 |
20110129095 | Audio Zoom - An audio equivalent of a video zoom feature for video recording and communication applications, as well as video post production processes. The audio zoom may operate in conjunction with a video zoom feature or independently. The audio zoom may be achieved by controlling reverberation effects of a signal, controlling a gain of the signal, as well as controlling the width of a directional beam from which is used to select the particular audio component to focus on. The audio zoom may operate in response to user input, such as a user selection of a particular direction, or automatically based a current environment or other factors. | 06-02-2011 |
20120057715 | SPATIAL AUDIO ENCODING AND REPRODUCTION - A method and apparatus processes multi-channel audio by encoding, transmitting or recording “dry” audio tracks or “stems” in synchronous relationship with time-variable metadata controlled by a content producer and representing a desired degree and quality of diffusion. Audio tracks are compressed and transmitted in connection with synchronized metadata representing diffusion and preferably also mix and delay parameters. The separation of audio stems from diffusion metadata facilitates the customization of playback at the receiver, taking into account the characteristics of local playback environment. | 03-08-2012 |
20120070011 | CONVERTER AND METHOD FOR CONVERTING AN AUDIO SIGNAL - A converter and conversion method are disclosed for converting N channel audio input channels into M channel audio output channels, wherein a processor is used for applying a transfer function to a signal received on an input channel to obtain reverberation components of a calculated output channel, | 03-22-2012 |
20120082319 | SPATIAL AUDIO ENCODING AND REPRODUCTION OF DIFFUSE SOUND - A method and apparatus processes multi-channel audio by encoding, transmitting or recording “dry” audio tracks or “stems” in synchronous relationship with time-variable metadata controlled by a content producer and representing a desired degree and quality of diffusion. Audio tracks are compressed and transmitted in connection with synchronized metadata representing diffusion and preferably also mix and delay parameters. The separation of audio stems from diffusion metadata facilitates the customization of playback at the receiver, taking into account the characteristics of local playback environment. | 04-05-2012 |
20120087508 | COMPUTER ENABLED KARAOKE MACHINE - A karaoke machine with an integrated computer interface device is disclosed. The karaoke machine includes at least one microphone input having an audio output. A computer interface device configured and arranged to receive digital audio and convert it to analog audio. At least one speaker is also included. A summing node is provided to combine the analog audio from the computer interface device with the audio output of the microphone input together into combined audio and transmit the combined audio to the speaker. | 04-12-2012 |
20120093330 | AURAL SIMULATION SYSTEM AND METHOD - A system and method include obtaining an aural impulse signature at a first location in a simulated space. An aural impulse signature at a second location in a simulated space is also obtained. Aural impulse signature morphing is applied via a computer to aural impulse signatures of the first and second locations to provide an intermediate aural impulse signature between the first and second locations. | 04-19-2012 |
20120134505 | METHOD FOR THE OPERATION OF A HEARING DEVICE AND HEARING DEVICE WITH A LENGTHENING OF FRICATIVES - A method operates a hearing device and an associated hearing device has at least one microphone for recording an ambient sound and an earpiece emitting an output sound. A fricative of the ambient sound is reproduced in a temporally lengthened form by the hearing device in the output sound. Speech intelligibility for the hearing-impaired can be improved by the lengthening of fricatives. | 05-31-2012 |
20120140938 | APPARATUS AND METHOD FOR GENERATING AUDIO SIGNAL HAVING SOUND ENHANCEMENT EFFECT - An audio apparatus includes a decay pattern generator configured to generate a decay pattern to be applied in an early reflection region, and generate an audio signal to which a decay pattern is applied by convoluting the generated decay pattern with PCM raw data of a sound source, a reverberation generator configured to generate reverberation from the audio signal to which the decay pattern is applied, and an adder configured to generate an output signal having a sound enhancement effect by adding the PCM raw data to an output of the reverberation generator. | 06-07-2012 |
20120183151 | SYSTEM AND METHOD FOR SOUND SYSTEM SIMULATION - A sound system design/simulation system provides a more realistic simulation of an existing venue by matching a measured reverberation characteristic of the existing venue and adjusting one or more acoustic parameters characterizing the model such that a predicted reverberation characteristic substantially matches the measured reverberation characteristic. | 07-19-2012 |
20120263311 | REVERBERATOR AND METHOD FOR REVERBERATING AN AUDIO SIGNAL - A reverberator for reverberating an audio signal includes a feedback delay loop processor for delaying at least two different frequency subband signals representing the audio signal by different loop delays to obtain reverberated frequency subband signals. | 10-18-2012 |
20120275613 | SYSTEM FOR MODIFYING AN ACOUSTIC SPACE WITH AUDIO SOURCE CONTENT - An audio signal processing system is configured to separate an audio signal into a dry signal component and one or more reverberant signal components. The dry signal component and the reverberant signal components can be separately modified and then recombined to form a processed audio signal. Alternatively, the dry signal component may be combined with an artificial reverberation component to form the processed audio signal. Modification of the reverberation signal component and generation of the artificial reverberation component may be performed in order to modify the acoustic characteristics of an acoustic space in which the audio signal is driving loudspeakers. The audio signal may be a pre-recorded audio signal or a live audio signal generated inside or outside the acoustic space. | 11-01-2012 |
20120281849 | INFORMATION PROCESSOR AND CONTROLLER DEVICE - A controller device is provided whereby players can experience realistic sounds. The controller device is connected to the main body of an information processing apparatus, wherein the controller device comprises a first speaker for emitting a sound signal in a low frequency range, and a second speaker for emitting a sound signal in a frequency range that is higher in comparison with the first speaker. | 11-08-2012 |
20130010975 | Method and System for Split Client-Server Reverberation Processing - In some embodiments, a method applying reverberation to audio from at least one client of a set of clients which share a virtual environment, including by asserting position data and at least one input audio stream to a server, selecting (in the server) a reverberation filter for each input audio stream in response to the position data and generating wet audio by applying to the input audio an early reverberation part of the selected reverberation filter. Typically, a client applies a late reverberation filter to the wet audio using metadata from the server. In other embodiments, a server selects a reverberation filter for application to audio in response to position data, asserts the audio and metadata indicative of the filter, and a client applies the filter to the audio using the metadata. Other aspects are systems, servers, and client devices configured to perform any embodiment of the method. | 01-10-2013 |
20130016845 | ELECTRO-ACOUSTIC AUDIO REVERBERATION DEVICE AND METHODAANM Bryan; Leonard C.AACI Palm Beach GardensAAST FLAACO USAAGP Bryan; Leonard C. Palm Beach Gardens FL US - Disclosed is an audio reverberation apparatus. The audio reverberation apparatus interacts with or may include a mechanical or acoustic reverberation element. An audio signal is pitch transposing upward and applied to the mechanical or acoustic reverberation element. The resulting audio reverberant signal retrieved from the mechanical or acoustic reverberation element is pitch-transposed downward by the same factor as the upward pitch transposing. This results in the mechanical or acoustic reverberation element requiring smaller dimensions in comparison to a mechanical or acoustic reverberation element where a non-pitch-transposed audio signal is applied. | 01-17-2013 |
20130034235 | SIGNAL PROCESSING APPARATUS AND METHOD FOR PROVIDING SPATIAL IMPRESSION - A signal processing apparatus and method for providing a spatial impression. The signal processing apparatus applies a reverberation effect to a summed signal formed by summing original signals corresponding to locations of a plurality of sound sources, and removes a correlation from the summed signal, thereby generating reverberation signals corresponding to the locations of the plurality of sound sources. Next, the signal processing apparatus applies panning information derived from the original signals, thereby reflecting location information of the original signals. | 02-07-2013 |
20130129098 | AUTOMATIC RENDER GENERATION OF AN AUDIO SOURCE - An input indicates a request for rendering of an audio source in a clip of an audio track according to an effect. Further, a cloned audio source is generated. The cloned audio source is a copy of the audio source. A cloned effect is generated. The cloned effect is a copy of the effect. The cloned audio source is processed according to the cloned effect to generate a rendered output file. The rendered output file is played without processing the audio source according to the effect. | 05-23-2013 |
20130129099 | SOUND PROCESSING DEVICE - In a sound processing device, an index value calculation unit calculates a first index value that follows change of a sound signal at a first following degree and a second index value that follows the change of the sound signal at a second following degree which is lower than the first following degree. An adjustment value calculation unit calculates an adjustment value effective to adjust a reverberation component of the sound signal based on difference between the first index value and the second index value. A reverberation adjustment unit applies the adjustment value to the sound signal. | 05-23-2013 |
20130202125 | ELECTRONIC DEVICE WITH DIGITAL REVERBERATOR AND METHOD - Electronic devices having digital reverberators are disclosed, together with a method of reproducing sound for a user with the digital reverberator. The digital reverberator uses digital surface absorption filters positioned in the reverberator to simulate absorption of energy as digital audio data samples are reflected from virtual surfaces. The position of the digital surface absorption filters enables known frequency-dependent surface absorption characteristics of real materials to be directly implemented using the filter coefficients of each digital surface absorption filter. This enables virtual acoustic spaces to be designed quickly without the need for the digital reverberator to be manually tuned for each space. | 08-08-2013 |
20130243211 | SOUND PROCESSING APPARATUS - In a sound processing apparatus, a likelihood calculation unit calculates an in-region coefficient and an out-of-region coefficient indicating likelihood of generation of each frequency component of a sound signal inside and outside a target localization range, respectively, according to localization of each frequency component. A reverberation analysis unit calculates a reverberation index value according to the ratio of a reverberation component for each frequency component. A coefficient setting unit generates a process coefficient for suppressing or emphasizing a reverberation component generated inside or outside the target localization range, for each frequency component of the sound signal, on the basis of the in-region coefficient, the out-of-region coefficient and the reverberation index value. A signal processing unit applies the process coefficient of each frequency component to each frequency component of the sound signal. | 09-19-2013 |
20140016793 | SPATIAL AUDIO TELECONFERENCING - Embodiments of the present invention allow participants in a networked virtual world to converse naturally as in a real-life situation. Each participant can hear “nearby” participants localized according to their positions in the virtual world, desirably with reverberation and environmental audio effects derived from properties of the virtual world. | 01-16-2014 |
20140064505 | ECHO MODULATION METHODS AND SYSTEM - Methods and systems for echo modulation are described. In one embodiment, intensities of a plurality of values in multiple windows of an audio signal may be obtained. The windows may be subject to a periodic boundary condition. A plurality of echo values may be calculated for each of the respective windows. The audio signal may be altered in one or more of the windows using a windowing function and echo values. Additional methods and systems are disclosed. | 03-06-2014 |
20140105409 | METHOD AND APPARATUS FOR AUDIO PROCESSING - A method and apparatus for introducing a time-varying time delay randomly into the individual reproduction channels of a sound recording, two in the case of binaural presentation. This emulates the temporal aspect of microphone and/or listener motion. The present invention may be applied as a unidirectional process. No preparation of the source material is required. It can be applied to any multichannel audio signal set. It can process analog or digital signals. The process may be used with headphones, loudspeakers, hearing aids or similar assistive hearing devices. | 04-17-2014 |
20140161268 | AURAL PROXIES AND DIRECTIONALLY-VARYING REVERBERATION FOR INTERACTIVE SOUND PROPAGATION IN VIRTUAL ENVIRONMENTS - The subject matter described herein includes a method for simulating directional sound reverberation. The method includes performing ray tracing from a listener position in a scene to surface as visible from a listener position. The method further includes determining a directional local visibility representing a distance from a listener position to nearer surface in the scene alone each ray. The method further includes determining directional reverberation at the listener position based on the directional local visibility. The method further includes rendering a simulated sound indicative of the directional reverberation at the listener position. | 06-12-2014 |
20140161269 | APPARATUS AND METHOD FOR ENCODING AUDIO SIGNAL, SYSTEM AND METHOD FOR TRANSMITTING AUDIO SIGNAL, AND APPARATUS FOR DECODING AUDIO SIGNAL - An audio signal encoding apparatus includes a processor to quantize an audio signal, to obtain a characteristic of reverberation masking that is exerted on a sound represented by the audio signal by reverberation of the sound generated in a reproduction environment by reproducing the sound, and to control a quantization step size of the audio signal that quantized based on the characteristic of the reverberation masking. | 06-12-2014 |
20140161270 | ROOM IDENTIFICATION USING ACOUSTIC FEATURES IN A RECORDING - Analysis of the audio component in multimedia data is disclosed. Rooms can be described through room impulse responses (RIR), the “fingerprint” of a specific room. The method uses machine learning techniques to identify rooms from ordinary audio recordings. | 06-12-2014 |
20140169575 | ESTIMATION OF REVERBERATION DECAY RELATED APPLICATIONS - A method for continuously estimating reverberation decay comprising receiving a sequence of audio data samples. Determining whether a plateau is present in the sequence of audio data samples. Generating one or more reverberation parameters from the sequence of audio data samples if it is determined that the plateau is present. | 06-19-2014 |
20140185817 | APPARATUS, METHOD AND ELECTROACOUSTIC SYSTEM FOR REVERBERATION TIME EXTENSION - An apparatus for reverberation time extension is provided. The apparatus includes a module for calculating wave field synthesis information, and a signal processor for generating a plurality of audio output signals for a plurality of loudspeakers based on the audio input signals that have been recorded by a plurality of microphones, and based on the wave field synthesis information. Further, the apparatus includes an operating unit for determining a virtual position of one or several virtual walls. The module for calculating wave field synthesis information is implemented to calculate the wave field synthesis information based on the virtual position of the one or several virtual walls. Further, the virtual position is adjustable by the operating unit for at least one of the virtual walls. | 07-03-2014 |
20140314240 | DEVICE AND METHOD FOR SIMULATING SPATIAL SOUND - The invention relates to a system for simulating stereophonic sound ( | 10-23-2014 |
20140369513 | Electro-Acoustic Audio Reverberation Device - Disclosed is an audio reverberation apparatus. The audio reverberation apparatus interacts with or may include a mechanical or acoustic reverberation element. An audio signal is pitch transposing upward and applied to the mechanical or acoustic reverberation element. The resulting audio reverberant signal retrieved from the mechanical or acoustic reverberation element is pitch-transposed downward by the same factor as the upward pitch transposing. This results in the mechanical or acoustic reverberation element requiring smaller dimensions in comparison to a mechanical or acoustic reverberation element where a non-pitch-transposed audio signal is applied. | 12-18-2014 |
20150078563 | ACCOUSTIC WAVE REPRODUCTION SYSTEM - A method of and a system for generating an acoustic wave representing reverberations from a desired acoustic environment are described including having a recording surface ( | 03-19-2015 |
20150104026 | PARAMETRIC EMITTER SYSTEM WITH NOISE CANCELATION - An ultrasonic noise cancelation system can include a communication module configured to receive a noise signal detected by a noise detection module, the noise signal representing a noise sound in a listener environment; a noise cancelation module configured to invert the received noise signal thereby creating an inverse noise signal representing an inverse of the noise sound; and a modulator configured to modulate the inverse noise signal onto an ultrasonic carrier to generate an ultrasonic signal. | 04-16-2015 |
20150325230 | AUDIO PROCESSING DEVICE, METHOD, AND PROGRAM - Provided is an audio processing device including a narration canceling section configured to generate a narration canceling signal by removing a narration component from an input signal, and a reverberation adding section configured to add a reverberation effect to the narration canceling signal. | 11-12-2015 |
20150332663 | SPATIAL AUDIO ENCODING AND REPRODUCTION OF DIFFUSE SOUND - A method and apparatus processes multi-channel audio by encoding, transmitting or recording “dry” audio tracks or “stems” in synchronous relationship with time-variable metadata controlled by a content producer and representing a desired degree and quality of diffusion. Audio tracks are compressed and transmitted in connection with synchronized metadata representing diffusion and preferably also mix and delay parameters. The separation of audio stems from diffusion metadata facilitates the customization of playback at the receiver, taking into account the characteristics of local playback environment. | 11-19-2015 |
20150379975 | MUSICAL MODIFICATION EFFECTS - Systems, including methods and apparatus, for applying audio effects to a non-ambient signal, based at least in part on information received in an ambient audio signal. Exemplary effects that can be applied using the present teachings include generation of harmony notes, pitch-correction of melody notes, and tempo-based effects that rely on beat detection. | 12-31-2015 |
20150379980 | REVERBERATOR AND METHOD FOR REVERBERATING AN AUDIO SIGNAL - A reverberator for reverberating an audio signal includes a feedback delay loop processor for delaying at least two different frequency subband signals representing the audio signal by different loop delays to obtain reverberated frequency subband signals. | 12-31-2015 |
20160118038 | REVERBERATION ESTIMATOR - Provided are methods and systems for generating Direct-to-Reverberant Ratio (DRR) estimates. The methods and systems use a null-steered beamformer to produce accurate DRR estimates across a variety of room sizes, reverberation times, and source-receiver distances. The DRR estimation algorithm uses spatial selectivity to separate direct and reverberant energy and account for noise separately. The formulation considers the response of the beamformer to reverberant sound and the effect of noise. The DRR estimation algorithm is more robust to background noise than existing approaches, and is applicable where a signal is recorded with two or more microphones, such as with mobile communications devices, laptop computers, and the like. | 04-28-2016 |
20160125871 | Reverberant Sound Adding Apparatus, Reverberant Sound Adding Method, and Reverberant Sound Adding Program - A reverberant sound adding apparatus includes a noise generator configured to generate a noise, an impulse noise generator configured to generate an impulse noise comprising an impulse sequence with random time intervals, an addition noise generator configured to generate an addition noise by adding the noise to the impulse noise, an impulse response generator configured to generate a modified impulse response by multiplying the addition noise by an amplitude characteristic of an impulse response that indicates acoustic characteristics of a space, and an impulse response convolver configured to convolve an input audio signal with the modified impulse response. | 05-05-2016 |
20160133245 | Sound Processing Method And Terminal Device - A method comprising acquiring an analog first sound signal, performing analog-to-digital conversion on the first sound signal to generate a digital second sound signal, performing reverberation processing, at a system bottom layer, on the second sound signal to generate a digital third sound signal, performing digital sound mixing processing on the third sound signal and a background sound signal sent from an application layer to generate a digital fourth sound signal, performing digital-to-analog conversion on the fourth sound signal to generate an analog fifth sound signal, performing analog sound mixing processing on the first sound signal and the fifth sound signal to generate an analog sixth sound signal, and playing the sixth sound signal. | 05-12-2016 |
20160140950 | Method and System for Real-Time Synthesis of an Acoustic Environment - A method or system is provided for real-time synthesis in a rehearsal space of an acoustic environment of a target space. Microphones, pick-ups or other devices are used to separately record the singing or instruments. These “dry” instrument signals are sent to a remote site, where they are processed to imprint the acoustics of the desired location. Performers in a rehearsal space with loudspeakers are close-miked. The signals collected would be sent to a processing center via a low-latency internet connection, where the signals would be processed according to the response of the target acoustic space, corrected by the known acoustics and loudspeaker configuration of the rehearsal space. The processed signals would then be sent back to the rehearsal space, where they would be amplified and played over the loudspeakers, thereby giving the impression that the performers are performing in the target acoustic space. | 05-19-2016 |
20160183000 | BASS ENHANCEMENT SYSTEM | 06-23-2016 |