Patent application number | Description | Published |
20110119066 | SIGNAL ENCODING DEVICE AND SIGNAL ENCODING METHOD, SIGNAL DECODING DEVICE AND SIGNAL DECODING METHOD, PROGRAM, AND RECORDING MEDIUM - A signal encoding device for encoding an input time-series signal includes: partitioning means; low-frequency encoding means; high-frequency gain information generating means; low-frequency reference value information generating means; high-frequency gain difference information generating means; high-frequency gain difference information encoding means; and multiplexing means. | 05-19-2011 |
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 |
20110295396 | CONTROL DEVICE, CONTROL METHOD, AND PROGRAM - The present invention relates to a control device, a control method, and a program capable of improving operability with a simpler configuration. | 12-01-2011 |
20120057711 | NOISE SUPPRESSION DEVICE, NOISE SUPPRESSION METHOD, AND PROGRAM - A noise suppression device includes a framing unit, a band dividing unit, a band power computing unit, a noise determining unit that determines whether or not each band is noise, a noise band power estimating unit, a noise suppression gain determining unit, a noise suppression unit that applies the noise suppression gains and obtains a band divided signal of which noise has been suppressed, a band synthesizing unit, and a framing synthesizing unit that synthesizes the frames of the framing signals; the noise suppression gain determining unit having an SNR computing unit that computes an SNR for each band, and a SNR smoothing unit that smoothes the SNR computed for each band; wherein the noise suppression gains for each band are determined based on the SNR of each band smoothed by the SNR smoothing unit; and wherein the SNR smoothing unit changes the smoothing coefficient. | 03-08-2012 |
20120116780 | ACOUSTIC SIGNAL PROCESSING SYSTEM, ACOUSTIC SIGNAL DECODING APPARATUS, PROCESSING METHOD IN THE SYSTEM AND APPARATUS, AND PROGRAM - The amount of computation in an acoustic signal decoding apparatus for a signal transform process from a frequency domain to a time domain is reduced while realizing the generation of appropriate output acoustic signals. | 05-10-2012 |
20120158411 | SIGNAL ENCODING APPARATUS AND METHOD, SIGNAL DECODING APPARATUS AND METHOD, PROGRAMS AND RECORDING MEDIUMS - An encoding apparatus that divides an input time series signal into a plurality of sub-bands and encodes a low frequency sub-band signal to generate encoded data of the low frequency sub-band signal. Concurrently, it compares the frequency amplitude peak of the new high frequency sub-band signal generated from the low frequency sub-band signal and the original high frequency sub-band signal and generates frequency amplitude peak information of the high frequency sub-band signal. It compares the gain of the new high frequency sub-band signal generated by using the low frequency sub-band signal and the original high frequency sub-band signal and generates gain information of the high frequency sub-band signal. Subsequently, the signal encoding apparatus multiplexes the encoded data of the low frequency sub-band signal, the frequency amplitude peak information of the high frequency sub-band signal and the gain information of the high frequency sub-band signal and outputs compressed data. | 06-21-2012 |
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 |
20120275625 | SIGNAL PROCESSING DEVICE, METHOD THEREOF, PROGRAM, AND DATA RECORDING MEDIUM - Provided is a signal processing device including an analysis unit for analyzing a characteristic of an input signal, and generating an analysis feature, a mapping control information determination unit for determining, based on the analysis feature and information that is generated by learning and that is for obtaining mapping control information from the analysis feature, the mapping control information, and a mapping processing unit for performing amplitude conversion on the input signal based on a linear or non-linear mapping function decided based on the mapping control information, and generating an output signal. | 11-01-2012 |
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 |
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 |
20130070873 | SIGNAL ENCODING APPARATUS AND METHOD, SIGNAL DECODING APPARATUS AND METHOD, PROGRAMS AND RECORDING MEDIUMS - A signal decoding method including the steps of: (a) de-multiplexing compressed data in an input signal and generating encoded data for at least one low frequency sub-band signal and information characterizing at least one high frequency sub-band signal; (b) decoding the encoded data and generating a low frequency sub-band signal; (c) generating at least one high frequency band signal using the low frequency sub-band signal and at least one item of the information characterizing the at least one high frequency sub-band signal; (d) adjusting a gain of the at least one high frequency band signal using the at least one item of information characterizing the at least one high frequency sub-band signal; and (e) generating a time series signal by combining the low frequency sub-band signal and the at least one high frequency sub-band signal | 03-21-2013 |
20130094669 | AUDIO SIGNAL PROCESSING APPARATUS, AUDIO SIGNAL PROCESSING METHOD AND A PROGRAM - An audio signal processing apparatus which includes an input analysis unit which analyses the characteristics of an input signal and generates an input sound feature value; an environment analysis unit which analyses the characteristics of the environmental sound and generates an environmental sound feature value; a mapping control information generation unit which generates mapping control information as control information of amplitude conversion processing to the input signal by application of the input sound feature value and the environmental sound feature value; and a mapping process unit which performs amplitude conversion on the input signal based on a linear or non-linear mapping function determined according to the mapping control information and generates an output signal. | 04-18-2013 |
20130124214 | SIGNAL PROCESSING APPARATUS AND METHOD, AND PROGRAM - A method, system, and computer program product for processing an encoded audio signal is described. In one exemplary embodiment, the system receives an encoded low-frequency range signal and encoded energy information used to frequency shift the encoded low-frequency range signal. The low-frequency range signal is decoded and an energy depression of the decoded signal is smoothed. The smoothed low-frequency range signal is frequency shifted to generate a high-frequency range signal. The low-frequency range signal and high-frequency range signal are then combined and outputted. | 05-16-2013 |
20130156206 | SIGNAL PROCESSING APPARATUS AND METHOD, PROGRAM, AND DATA RECORDING MEDIUM - The present invention relates to a signal processing apparatus and method, a program, and a data recording medium configured such that the playback level of an audio signal can be easily and effectively enhanced without requiring prior analysis. | 06-20-2013 |
20130191124 | VOICE PROCESSING APPARATUS, METHOD AND PROGRAM - Provided is a voice processing apparatus including a feature quantity calculation section extracting a feature quantity from a target frame of an input voice signal, a sound pressure estimation candidate point updating section making each frame of the input voice signal a sound pressure estimation candidate point, retaining the feature quantity of each sound pressure estimation candidate point, and updating the sound pressure estimation candidate point based on the feature quantity of the sound pressure estimation candidate point and the feature quantity of the target frame, a sound pressure estimation section calculating an estimated sound pressure of the input voice signal, based on the feature quantity of the sound pressure estimation candidate point, a gain calculation section calculating a gain applied to the input voice signal based on the estimated sound pressure, and a gain application section performing a gain adjustment of the input voice signal based on the gain. | 07-25-2013 |
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 |
20130208902 | ENCODING DEVICE AND METHOD, DECODING DEVICE AND METHOD, AND PROGRAM - The present invention relates to an encoding device and method, and a decoding device and method, and a program which enable music signals to be played with higher sound quality by expanding a frequency band. | 08-15-2013 |
20130275142 | SIGNAL PROCESSING DEVICE, METHOD, AND PROGRAM - The present technology relates to a signal processing device, method, and program that may obtain audio at a higher audio quality when decoding an audio signal. | 10-17-2013 |
20140006037 | ENCODING DEVICE, ENCODING METHOD, AND PROGRAM | 01-02-2014 |
20140156289 | DECODING DEVICE, DECODING METHOD, ENCODING DEVICE, ENCODING METHOD, AND PROGRAM - The present technique relates to a decoding device, a decoding method, an encoding device, an encoding method, and a program which can obtain a high-quality realistic sound. | 06-05-2014 |
20140172433 | ENCODING DEVICE, ENCODING METHOD, AND PROGRAM - This technology relates to an encoding device, an encoding method, and a program capable of improving audio quality and more efficiently encoding audio. A first high-frequency encoding circuit encodes a high-frequency range based on a low-frequency subband signal and a high-frequency subband signal and obtains a high-frequency code amount. A low-frequency encoding circuit encodes a low-frequency signal with a code amount determined by the high-frequency code amount and a low-frequency decoding circuit decodes the encoded low-frequency signal. A subband dividing circuit divides a decoded low-frequency signal obtained by decoding into decoded low-frequency subband signals of a plurality of subbands and a second high-frequency encoding circuit generates a high-frequency code string such that a code amount of the high-frequency code string for obtaining a high-frequency component is not larger than the high-frequency code amount based on the decoded low-frequency subband signals and the high-frequency subband signals. The present invention is applicable to the encoding device. | 06-19-2014 |
20140180682 | NOISE DETECTION DEVICE, NOISE DETECTION METHOD, AND PROGRAM - There is provided a noise detection device including an amplitude feature quantity calculator, a frequency feature quantity calculator, a feature variation calculator, an interval specification unit, a feature quantity set generation unit, and a noise determination unit. | 06-26-2014 |
20140200899 | ENCODING DEVICE AND ENCODING METHOD, DECODING DEVICE AND DECODING METHOD, AND PROGRAM - The present technology relates to an encoding device and an encoding method, a decoding device and a decoding method, and a program, configured to obtain a high quality audio with less encoding amount. A number-of-sections determining feature amount calculating circuit calculates a number-of-sections determining feature amount for determining the number of divisions to divide a process target section into continuous frame sections each including a frame for which the same estimation coefficient is selected, based on sub-band signals of a plurality of sub-bands constituting an input signal. A quasi-high frequency sub-band power difference calculating circuit determines the number of continuous frame sections in the process target section based on the number-of-sections determining feature amount, selects an estimation coefficient for obtaining a high frequency component of the input signal by estimation for each continuous frame section, and generates data including a coefficient index for obtaining the estimation coefficient. A high frequency encoding circuit encodes the obtained data, and generates high frequency encoded data. The present technology can be applied to an encoding device. | 07-17-2014 |
20140200900 | ENCODING DEVICE AND METHOD, DECODING DEVICE AND METHOD, AND PROGRAM - The present technology relates to an encoding device and method, a decoding device and method, and a program, which enable improvement of audio quality. | 07-17-2014 |
20140205101 | ENCODING DEVICE AND METHOD, DECODING DEVICE AND METHOD, AND PROGRAM - The present technology relates to an encoding device and method, a decoding device and method, and a program that enable audio of a high audio quality to be obtained with a smaller code amount. | 07-24-2014 |
20140205111 | SOUND PROCESSING APPARATUS, METHOD, AND PROGRAM - The present technique relates to a sound processing apparatus, a method, and a program capable of alleviating degradation of the quality of sound in a case where the gain of a sound signal is amplified. | 07-24-2014 |
20140211948 | DECODING DEVICE, DECODING METHOD, ENCODING DEVICE, ENCODING METHOD, AND PROGRAM - The present technique relates to a decoding device, a decoding method, an encoding device, an encoding method, and a program which can obtain a high-quality realistic sound. | 07-31-2014 |
20140214432 | DECODING DEVICE, DECODING METHOD, ENCODING DEVICE, ENCODING METHOD, AND PROGRAM - The present technique relates to a decoding device, a decoding method, an encoding device, an encoding method, and a program which can obtain a high-quality realistic sound. | 07-31-2014 |
20140214433 | DECODING DEVICE, DECODING METHOD, ENCODING DEVICE, ENCODING METHOD, AND PROGRAM - The present technique relates to a decoding device, a decoding method, an encoding device, an encoding method, and a program which can obtain a high-quality realistic sound. | 07-31-2014 |
20150049874 | SIGNAL PROCESSING APPARATUS AND METHOD, PROGRAM, AND DATA RECORDING MEDIUM - The present invention relates to a signal processing apparatus and method, a program, and a data recording medium configured such that the playback level of an audio signal can be easily and effectively enhanced without requiring prior analysis. An analyzer | 02-19-2015 |
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 |
20150063600 | AUDIO SIGNAL PROCESSING APPARATUS, METHOD, AND PROGRAM - An audio signal processing apparatus that includes a band division section, an analysis section, a gain adjustment amount calculation section, and a gain adjustment section. The band division section is configured to generate a resonance in-band signal by band division on an audio input signal. The analysis section is configured to extract an amount of features from each of the resonance in-band signal and the input signal. The gain adjustment amount calculation section is configured to calculate a gain adjustment amount for a resonance frequency band in the input signal, the gain adjustment amount being calculated based on the amount of features of the resonance in-band signal and the amount of features of the input signal. The gain adjustment section is configured to perform a gain adjustment on the resonance frequency band in the input signal based on the gain adjustment amount. | 03-05-2015 |