Patent application number | Description | Published |
20110137659 | Frequency Band Extension Apparatus and Method, Encoding Apparatus and Method, Decoding Apparatus and Method, and Program - The present invention relates to a frequency band extension apparatus and method, an encoding apparatus and method, a decoding apparatus and method, and a program, with which a music signal can be reproduced with higher sound quality by means of frequency band extension. | 06-09-2011 |
20120201399 | SOUND SIGNAL PROCESSING APPARATUS, SOUND SIGNAL PROCESSING METHOD, AND PROGRAM - A sound signal processing apparatus includes a frequency analysis unit which executes frequency analysis of an input sound signal; a low-frequency envelope calculating unit which calculates low-frequency envelope information as envelope information of a low-frequency band based on a result of the frequency analysis; a high-frequency envelope information estimating unit which applies learned data generated in advance based on a sound signal for learning and generates estimated high-frequency envelope information corresponding to an input signal from the low-frequency envelope information corresponding to the input sound signal; and a frequency synthesizing unit which synthesizes a high-frequency band signal corresponding to the estimated high-frequency envelope information generated by the high-frequency envelope information estimating unit with the input sound signal and generates an output sound signal in which a frequency band is expanded. | 08-09-2012 |
20120203719 | AUDIO SIGNAL PROCESSING DEVICE, AUDIO SIGNAL PROCESSING METHOD, AND PROGRAM - An audio signal processing device includes: a time-frequency analysis unit performing a time-frequency analysis of an input audio signal; a base factorization unit inputting learning data that is generated in advance based on an audio signal for learning including a sound from a plurality of sound sources and is made with base frequencies corresponding to the respective sound sources and carrying out base factorization of a time-frequency analysis result to the input audio signal inputted from the time-frequency analysis unit by applying a total base frequency that has the base frequencies corresponding to the respective sound sources combined therein to generate a base activity to the input audio signal; and a command identification unit inputting the base activity from the base factorization unit to carry out command identification by performing an identification process of the inputted base activity. | 08-09-2012 |
20120243526 | FREQUENCY BAND EXTENDING DEVICE AND METHOD, ENCODING DEVICE AND METHOD, DECODING DEVICE AND METHOD, AND PROGRAM - The present invention relates to a frequency band extending device and method, an encoding device and method, a decoding device and method, and a program, whereby music signals can be played with higher sound quality due to the extension of frequency bands. | 09-27-2012 |
20130028427 | SIGNAL PROCESSING APPARATUS AND SIGNAL PROCESSING METHOD, ENCODER AND ENCODING METHOD, DECODER AND DECODING METHOD, AND PROGRAM - The present invention relates to a signal processing apparatus and a signal processing method, an encoder and an encoding method, a decoder and a decoding method, and a program capable of reproducing music signal having a better sound quality by expansion of frequency band. | 01-31-2013 |
20130028439 | INPUT DEVICE, SIGNAL PROCESSING METHOD, PROGRAM, AND RECORDING MEDIUM - There is provided an input device including at least two microphones placed at different positions on a chassis to face different directions on one of space axes, a low-frequency bandwidth extracting part for extracting a low-frequency bandwidth signal from a signal input from the microphones, a phase difference calculating part for calculating a phase difference using the low-frequency bandwidth signal extracted by the low-frequency bandwidth extracting part; and a control signal generating part for generating a control signal based on the phase difference calculated by the phase difference calculating part. | 01-31-2013 |
20130030818 | SIGNAL PROCESSING APPARATUS AND SIGNAL PROCESSING METHOD, ENCODER AND ENCODING METHOD, DECODER AND DECODING METHOD, AND PROGRAM - The present invention relates to a signal processing apparatus and a signal processing method, an encoder and an encoding method, a decoder and a decoding method, and a program capable of reproducing music signal having a better sound quality by expansion of frequency band. | 01-31-2013 |
20130058500 | FREQUENCY BAND EXTENDING APPARATUS, FREQUENCY BAND EXTENDING METHOD, PLAYER APPARATUS, PLAYING METHOD, PROGRAM AND RECORDING MEDIUM - A player apparatus for playing an input signal after band-extending the input signal includes: an extension controller to determine an extension start band for the input signal in accordance with information relating to the input signal; and a band divider to divide the input signal into a plurality of sub-band signals. The frequency band is extended on the basis of a plurality of the sub-band signals on a side lower than the extension start band, among the plurality of sub-band signals into which the input signal is band-divided by the band divider. | 03-07-2013 |
20130202118 | SIGNAL PROCESSING APPARATUS AND SIGNAL PROCESSING METHOD, ENCODER AND ENCODING METHOD, DECODER AND DECODING METHOD, AND PROGRAM - The present invention relates to a signal processing apparatus and a signal processing method, an encoder and an encoding method, a decoder and a decoding method, and a program capable of reproducing music signal having a better sound quality by expansion of frequency band. | 08-08-2013 |
20140133674 | AUDIO PROCESSING DEVICE, METHOD AND PROGRAM - An audio processing device including a factorization unit which factorizes frequency information obtained by performing time-frequency transformation on an audio signal of a plurality of channels into a channel matrix representing characteristics of a channel direction, a frequency matrix representing characteristics of a frequency direction, and a time matrix representing characteristics of a time direction; and an extraction unit which extracts the frequency information of audio from an arbitrary designated direction based on the channel matrix, the frequency matrix, and the time matrix. | 05-15-2014 |
20140321653 | SOUND PROCESSING APPARATUS, METHOD, AND PROGRAM - Disclosed is a sound processing apparatus including a factorization unit and an extraction unit. The factorization unit is configured to factorize frequency information obtained by performing time-frequency transformation on sound signals of a plurality of channels into a channel matrix expressing properties in a channel direction, a frequency matrix expressing properties in a frequency direction, and a time matrix expressing properties in a time direction. The extraction unit is configured to compare the channel matrix with a threshold and extract components specified by a result of the comparison from the channel matrix, the frequency matrix, and the time matrix to generate the frequency information on a sound from a desired sound source. | 10-30-2014 |
20150058015 | VOICE PROCESSING APPARATUS, VOICE PROCESSING METHOD, AND PROGRAM - A voice processing apparatus includes a voice quality determining unit configured to determine a target speaker determining method used for a voice quality conversion in accordance with a determining method control value for instructing the target speaker determining method of determining a target speaker whose voice quality is targeted to the voice quality conversion, and determine the target speaker in accordance with the target speaker determining method. | 02-26-2015 |