Class / Patent application number | Description | Number of patent applications / Date published |
381018000 | Pseudo quadrasonic | 36 |
20080226085 | Audio Apparatus - An audio apparatus includes an input unit for inputting stereo signals in which multi-channel surround-sound signals are mixed in accordance with a predetermined algorithm and a parameter indicating encoded contents of the algorithm, a surround-sound signal generator for generating left-side surround-sound signals and right-side surround-sound signals by decorrelating left-side signals and right-side signals contained in the stereo signals, and a controller for controlling the decorrelation performed by the surround-sound signal generator based on the parameter. | 09-18-2008 |
20080247554 | Wireless Digital Transmission of Low Frequency Effects and Surround Channels For Surround Sound System - A subwoofer ( | 10-09-2008 |
20080279389 | SOUND FIELD REPRODUCTION APPARATUS AND METHOD FOR REPRODUCING REFLECTIONS - Provided are sound field reproducing apparatus and method. The sound field reproducing apparatus includes an input unit for receiving reflection reproducing information, a signal processor for selecting loudspeakers and calculating reflection signal for applying a panning algorithm based on the reflection reproducing information, a signal treatment unit for localizing the calculated reflection signal on a virtual sound image according to the panning algorithm; and a reproducer for reproducing the localized reflection signals through the selected loudspeakers. | 11-13-2008 |
20080310640 | Method and Apparatus for Processing a Media Signal - An apparatus for processing a media signal and method thereof are disclosed, by which the media signal can be converted to a surround signal by using spatial information of the media signal. The present invention provides a method of processing a signal, the method comprising of generating rendering information by using spatial information indicating features between multi-sources and filter information having a surround effect; and generating a surround signal by applying the rendering information to a downmix signal generated by downmixing the multi-sources, wherein a tab number of a filter used in applying the rendering information to generate the surround signal is variable. | 12-18-2008 |
20090161881 | SOUND SYSTEM FOR PORTABLE ELECTRONIC DEVICE - A sound system ( | 06-25-2009 |
20090190766 | MULTI-CHANNEL AUDIO ENHANCEMENT SYSTEM FOR USE IN RECORDING PLAYBACK AND METHODS FOR PROVIDING SAME - An audio enhancement system and method for use receives a group of multi-channel audio signals and provides a simulated surround sound environment through playback of only two output signals. The multi-channel audio signals comprise a pair of front signals intended for playback from a forward sound stage and a pair of rear signals intended for playback from a rear sound stage. The front and rear signals are modified in pairs by separating an ambient component of each pair of signals from a direct component and processing at least some of the components with a head-related transfer function. Processing of the individual audio signal components is determined by an intended playback position of the corresponding original audio signals. The individual audio signal components are then selectively combined with the original audio signals to form two enhanced output signals for generating a surround sound experience upon playback. | 07-30-2009 |
20090252339 | SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, SIGNAL PROCESSING PROGRAM, AND COMPUTER READABLE RECORDING MEDIUM - In this signal processing apparatus, a first-audio-parameter calculating unit calculates a first audio parameter based on two audio signals. A second-audio-parameter calculating unit calculates a second audio parameter based on the two audio signals. A surround-signal generating unit generates surround components to be respectively allocated to surround signals. | 10-08-2009 |
20090252340 | System, apparatus, and method of speaker - A system, and an apparatus of speaker, and a method for forming a virtual audio is provided. An audio source is processed by a second audio source processing program according to parameters which are entered by the user, and filtered to be a high frequency audio signal. The audio source with orientation is outputted by the orientation speaker. | 10-08-2009 |
20100246833 | AUDIO MIXER - Six input channels, to which are allocated 5.1-channel surround signals from a plurality of input sources, are grouped into a surround channel group, and these six input channels are connected to corresponding ones of six surround buses in a one-to-one relationship. Thus, merely grouping the input channels into a surround channel group allows the signals of the individual input channels (5.1-channel surround signals) to be taken out via a plurality of output destinations (5.1-channel speakers) corresponding to the surround buses. Once an instruction is given for changing a value of a parameter, the parameter is controlled in a ganged fashion in all of the input channels of the surround channel group except for an LFE input channel of the surround channel group. | 09-30-2010 |
20100278346 | SPECTRAL MANAGEMENT SYSTEM - A spectral management system may be used in an audio system to receive and process audio signals having multiple distributed audio channels, such as a right, left, center, right side, left side, right rear and left rear channels. The spectral management system may separate and route a frequency range of audio content included in one or more of the distributed audio channels to other distributed audio channels. The separated and routed frequency range of audio content may be combined with audio content present on the other distributed audio channels to which the separated frequency range of audio content is routed. Separation, routing and combination may include bass audio content routing, mid-bass audio content routing, subwoofer audio content routing and treble audio content routing. | 11-04-2010 |
20100303246 | VIRTUAL AUDIO PROCESSING FOR LOUDSPEAKER OR HEADPHONE PLAYBACK - There are provided methods and an apparatus for processing audio signals. According to one aspect of the present invention there is included a method for processing audio signals having the steps of receiving at least one audio signal having at least a center channel signal, a right side channel signal, and a left side channel signal; processing the right and left side channel signals with a first virtualizer processor, thereby creating a right virtualized channel signal and a left virtualized channel signal; processing the center channel signal with a spatial extensor to produce distinct right and left outputs, thereby expanding the center channel with a pseudo-stereo effect; and summing the right and left outputs with the right and left virtualized channel signals to produce at least one modified side channel output. | 12-02-2010 |
20110091044 | Virtual speaker apparatus and method for processing virtual speaker - A virtual speaker apparatus and a virtual speaker processing method is disclosed. The virtual speaker apparatus uses the closest surround speaker when a virtual speaker to be virtually generated is a back left virtual speaker or a back right virtual speaker. | 04-21-2011 |
20110129093 | SYSTEM AND METHOD FOR DISPLAYING SOUND AS VIBRATIONS - There is provided a method and a system for presenting audio signals as vibrotactile stimuli to the body in accordance with a Model Human Cochlea (MHC). Audio signals are obtained for presentation. The audio signals are separated into multiple bands of discrete frequency ranges that encompass the complete audio signal. Those signals are output to multiple vibrotactile devices. The vibrotactile devices may be positioned in a respective housing to intensify and constrain a vibrational energy from the vibrotactile devices. Output of the vibrotactile devices stimulate the cutaneous receptors of the skin at the locations where the vibrotactile devices are placed. In one embodiment, a system implements this method using audio voice coils that are embedded in a chair, which make contact with the human body while seated. | 06-02-2011 |
20110182431 | Method and Apparatus for Decoding an Audio Signal - An apparatus for decoding an audio signal and method thereof are disclosed. The present invention includes receiving the audio signal and spatial information, identifying a type of modified spatial information, generating the modified spatial information using the spatial information, and decoding the audio signal using the modified spatial information, wherein the type of the modified spatial information includes at least one of partial spatial information, combined spatial information and expanded spatial information. Accordingly, an audio signal can be decoded into a configuration different from a configuration decided by an encoding apparatus. Even if the number of speakers is smaller or greater than that of multi-channels before execution of downmixing, it is able to generate output channels having the number equal to that of the speakers from a downmix audio signal. | 07-28-2011 |
20110317841 | METHOD AND DEVICE FOR OPTIMIZING AUDIO QUALITY - A computer-implemented method is disclosed for enhancing quality of an audio source. The method comprises receiving control information; receiving an initial signal from the audio source; and generating a dynamic control signal based on the control information. The control information includes attack, release, length, and gain parameters. | 12-29-2011 |
20130010970 | MULTICHANNEL SOUND REPRODUCTION METHOD AND DEVICE - The present invention relates to a method for selecting auditory signal components for reproduction by means of one or more supplementary sound reproducing transducers, such as loudspeakers, placed between a pair of primary sound reproducing transducers, such as left and right loudspeakers in a stereophonic loudspeaker setup or adjacent loudspeakers in a surround sound loudspeaker setup, the method comprising the steps of (i) specifying azimuth angle range within which one of said supplementary sound reproducing transducers is located or is to be located and a listening direction; (Ii) based on said azimuth angle range and said listening direction, determining left and right interaural level difference limits and left and right interaural time difference limits, respectively; (iii) providing a pair of input signals for said pair of primary sound reproducing transducers; (iv) pre-processing each of said input signals, thereby providing a pair of pre-processed input signals; (v) determining interaural level difference and interaural time difference as a function of frequency between said pre-processed signals; and (vi) providing those signal components of said input signals that have interauial level differences and interaural time differences in the interval between said left and right interaural level difference limits, and left and right interaural time difference limits, respectively, to the corresponding supplementary sound reproducing transducer. The invention also relates to a device for carrying out the above method and systems of such devices. | 01-10-2013 |
20130034231 | Spatial audio processing - A spatial audio processing uses a matrix of channels and conditioning amplifiers. Four channels are created from two by using a left, right, mono and a differential amp. A timing gate is added and set to the bass frequency to switch the matrix. The matrix starts with channel one receiving the left program. On the next timing cycle, channel two receives the left program, while channel one receives the left rear program. Thereafter, channel three receives the right program and channel four receives the right rear program. This condition continues through the timing order until every channel has received all four programs and then repeats itself. The constant shift in program content eliminates standing waves in any area and opens up the sound in an area that becomes spatial or orbital. | 02-07-2013 |
20130170649 | APPARATUS AND METHOD FOR GENERATING PANORAMIC SOUND - An apparatus and method for generating a panoramic sound are provided. The panoramic sound generation apparatus may include a panning coefficient calculation unit to calculate a panning coefficient that represents directivity of a sound source using an input signal, a masker determination unit to determine a direction masker that extracts a sound source of a desired direction based on the panning coefficient, and a channel separation unit to separate to be used as an output signal, output to a sound output device, using the direction masker. | 07-04-2013 |
20130182853 | Multi-Channel Down-Mixing Device - A down-mixing device is provided. 5.1-channel sounds are down-mixed into 4-channel sounds with high-quality multi-channel surrounding sound effect reappeared. A common-acoustic-pole and zero (CAPZ) model is used to rebuild frequency responses of original head-related transfer functions (HRTF). Direct sounds, reflection sounds and late reverberation in a spatial sound field are gathered. Thus, varieties of sounds become rich and 3-dimensional hearing experiences are enhanced with low cost for a 4-channel earphones system. | 07-18-2013 |
20130272528 | SYSTEM FOR CONVERTING A SIGNAL - A device for processing a signal includes a processing module used to process data in a domain. The device includes domain conversion hardware and memory, both separate from the processing module. The memory receives and sends data represented in a first domain to the domain conversion hardware. The domain conversion hardware converts the first domain data into the second domain data that may be used or processed by the processing module. The second domain data is then accessed and used by the processing module for processing. | 10-17-2013 |
20130315402 | THREE-DIMENSIONAL SOUND COMPRESSION AND OVER-THE-AIR TRANSMISSION DURING A CALL - A method for encoding multiple directional audio signals using an integrated codec by a wireless communication device is disclosed. The wireless communication device records a plurality of directional audio signals. The wireless communication device also generates a plurality of audio signal packets based on the plurality of directional audio signals. At least one of the audio signal packets includes an averaged signal. The wireless communication device further transmits the plurality of audio signal packets. | 11-28-2013 |
20140079223 | Localization of a Wireless User Equipment (UE) Device Based on Audio Masking - A scheme for localizing a wireless user equipment (UE) device's relative position with respect to a spatial configuration based on audio signatures received via a multi-channel audio system, e.g., an audio system of a vehicle or home entertainment system. The wireless UE device is configured to capture the audio signatures masked within a background audio signal received from a head unit. The wireless UE device includes a persistent memory module having program instructions for processing the background audio signal including the masked signatures, which may comprise either channel-specific pseudo-random noise (PN) sequences or single-frequency tones, in order to compute time delays or power levels associated with the speaker channels. A localization module is configured to estimate the wireless UE device's relative position based on the time delays or power levels. | 03-20-2014 |
20140079224 | Localization of a Wireless User Equipment (UE) Device Based on Out-Of-Hearing Band Audio Signatures for Ranging - A scheme for localizing a wireless user equipment (UE) device's relative position with respect to a spatial configuration based on audio signatures received via a multi-channel audio system, e.g., an audio system of a vehicle or home entertainment system. The wireless UE device is configured to capture the audio signatures received from a head unit that are placed in an out-of-hearing band of a captured signal. The wireless UE device includes a persistent memory module having program instructions for processing the captured signal including the out-of-band signatures, which may comprise either channel-specific pseudo-random noise (PN) sequences or single-frequency tones, in order to compute time delays or power levels associated with the speaker channels. A localization module is configured to estimate the wireless UE device's relative position based on the time delays or power levels. | 03-20-2014 |
20140177847 | Systems, Methods, and Apparatus for Playback of Three-Dimensional Audio - Embodiments of the disclosure can include systems, methods, and apparatus for playback of three-dimensional audio sound. In one embodiment, a system can include at least one input module operable to receive a mono audio signal. The system can also include at least one processing module operable to convert the mono audio signal to a six channel signal, wherein the six channel signal is played back over a 3D-EA array of speakers, wherein the 3D-EA array of speakers facilitates a dome-shaped listening environment around a listener. In at least one embodiment, the at least one processing module is further operable to receive sonic spatial data, and based at least in part on the sonic spatial data, modify volume and/or delay associated with the six channel signal. | 06-26-2014 |
20140185812 | Method for Generating a Surround Audio Signal From a Mono/Stereo Audio Signal - Disclosed is a method for generating a surround-channel audio signal (Mout) from a mono/stereo audio signal (Min, Sin), comprising the steps of: a) generating a first multi-channel signal (M | 07-03-2014 |
20140355766 | BINAURALIZATION OF ROTATED HIGHER ORDER AMBISONICS - A device comprising one or more processors is configured to obtain transformation information, the transformation information describing how a sound field was transformed to reduce a number of a plurality of hierarchical elements to a reduced plurality of hierarchical elements; and perform binaural audio rendering with respect to the reduced plurality of hierarchical elements based on the transformation information. | 12-04-2014 |
20150063574 | APPARATUS AND METHOD FOR SEPARATING MULTI-CHANNEL AUDIO SIGNAL - An apparatus and method for separating a multi-channel audio signal that separates a multi-channel audio signal into a plurality of sound source objects is disclosed, the apparatus including a multi-channel stereo transformer to transform a multi-channel audio signal into a plurality of stereo signals, and a stereo sound source separator to separate the plurality of stereo signals into a plurality of sound source objects. | 03-05-2015 |
20160007133 | RENDERING OF AUDIO OBJECTS WITH APPARENT SIZE TO ARBITRARY LOUDSPEAKER LAYOUTS - Multiple virtual source locations may be defined for a volume within which audio objects can move. A set-up process for rendering audio data may involve receiving reproduction speaker location data and pre-computing gain values for each of the virtual sources according to the reproduction speaker location data and each virtual source location. The gain values may be stored and used during “run time,” during which audio reproduction data are rendered for the speakers of the reproduction environment. During run time, for each audio object, contributions from virtual source locations within an area or volume defined by the audio object position data and the audio object size data may be computed. A set of gain values for each output channel of the reproduction environment may be computed based, at least in part, on the computed contributions. Each output channel may correspond to at least one reproduction speaker of the reproduction environment. | 01-07-2016 |
20160044431 | IMMERSIVE AUDIO RENDERING SYSTEM - A depth processing system can employ stereo speakers to achieve immersive effects. The depth processing system can advantageously manipulate phase and/or amplitude information to render audio along a listener's median plane, thereby rendering audio along varying depths. In one embodiment, the depth processing system analyzes left and right stereo input signals to infer depth, which may change over time. The depth processing system can then vary the phase and/or amplitude decorrelation between the audio signals over time to enhance the sense of depth already present in the audio signals, thereby creating an immersive depth effect. | 02-11-2016 |
20160044434 | AUDIO APPARATUS AND AUDIO PROVIDING METHOD THEREOF - Disclosed are an audio apparatus and an audio providing method thereof. The audio providing method includes receiving an audio signal including a plurality of channels, applying an audio signal having a channel, from among the plurality of channels, giving a sense of elevation to a filter to generate a plurality of virtual audio signals to be respectively output to a plurality of speakers, applying a combination gain value and a delay value to the plurality of virtual audio signals so that the plurality of virtual audio signals respectively output through the plurality of speakers form a sound field having a plane wave, and respectively outputting the plurality of virtual audio signals, to which the combination gain value and the delay value are applied, through the plurality of speakers. The filter processes the audio signal to have a sense of elevation. | 02-11-2016 |
20160073213 | SOUND PROCESSING APPARATUS AND METHOD, AND PROGRAM - The present technology relates to a sound processing apparatus and method, and a program for enabling more stable localization of a sound image. | 03-10-2016 |
20160080883 | SOUND PROCESSING APPARATUS AND SOUND PROCESSING SYSTEM - The present technology relates to a sound processing apparatus and a sound processing system for enabling more stable localization of a sound image. | 03-17-2016 |
20160157040 | Renderer Controlled Spatial Upmix | 06-02-2016 |
20170238112 | AUDIO DECODER FOR AUDIO CHANNEL RECONSTRUCTION | 08-17-2017 |
20170238113 | AUDIO DECODER FOR AUDIO CHANNEL RECONSTRUCTION | 08-17-2017 |
20190149935 | SOUND PROCESSING APPARATUS AND METHOD, AND PROGRAM | 05-16-2019 |