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9043203 Audio encoder, audio decoder, methods for encoding and decoding an audio signal, and a computer program  
An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band...
9037455 Limiting notification interruptions  
Techniques for a computing device operating in limited-access states are provided. One example method includes determining, by a computing device, that a notification is scheduled for output by...
9031837 Speech quality evaluation system and storage medium readable by computer therefor  
In prediction of a speech quality evaluation score such as a phone speech, even when a background noise exists, a subjective opinion score is predicted with high precision. A speech quality...
9026451 Pitch post-filter  
Methods and systems for using pitch predictors in speech/audio coders are provided. Techniques for optimal pre- and post-filtering are presented, and a general result that post-filtering is more...
9026433 Voice quality measurement device, method and computer readable medium  
A voice quality measurement device that measures voice quality of a decoded voice signal outputted from a voice decoder unit. The voice quality measurement device includes a packet buffer unit and...
9020815 Spectral envelope coding of energy attack signal  
MDCT or FFT-based audio coding algorithms often have the problem named here spectral pre-echoes when coding an energy attack signal. This invention presents several possibilities to avoid the...
8996365 Howling canceller  
A howling canceller which suppresses occurrence of howling even when an open loop gain exceeds “1” in the whole reproduction band. In the howling canceller, an adaptive filter (107) operates a...
8977545 System and method for multi-channel noise suppression  
Described herein are multi-channel noise suppression systems and methods that are configured to detect and suppress wind and background noise using at least two spatially separated microphones: at...
8972250 Enhancement of multichannel audio  
The invention relates to audio signal processing. More specifically, the invention relates to enhancing multichannel audio, such as television audio, by applying a gain to the audio that has been...
8965758 Audio signal de-noising utilizing inter-frame correlation to restore missing spectral coefficients  
In the field of audio encoding/decoding technologies, a signal de-noising method is provided. The method includes: selecting, according to a degree of inter-frame correlation of a frame where a...
8965756 Automatic equalization of coloration in speech recordings  
Systems and methods to automatically equalize coloration in speech recordings is provided. In example embodiments, a reference spectral shape based on a reference signal is determined. An...
8965757 System and method for multi-channel noise suppression based on closed-form solutions and estimation of time-varying complex statistics  
Multi-channel noise suppression systems and methods are described that omit the traditional delay-and-sum fixed beamformer in devices that include a primary speech microphone and at least one...
8935159 Noise removing system in voice communication, apparatus and method thereof  
Disclosed is the system and method to remove noises in voice signals in a voice communication. The at least one embodiment of the present disclosure performs a spectral subtraction (SS) for voice...
8935160 Systems and methods for frame synchronization  
Systems (1600) and methods (1500) for frame synchronization. The methods involve: extracting bit sequences S0 and S1 from a Bit Stream (“BS”) of a Data Burst (“DB”); decoding S0 and S1 to obtain...
8935164 Non-spatial speech detection system and method of using same  
A non-spatial speech detection system includes a plurality of microphones whose output is supplied to a fixed beamformer. An adaptive beamformer is used for receiving the output of the plurality...
8924206 Electrical apparatus and voice signals receiving method thereof  
An electrical apparatus a voice signal receiving method thereof are disclosed. The electrical apparatus includes a plurality of voice receivers, a voice activity detector, a voice channel switch...
8924199 Voice correction device, voice correction method, and recording medium storing voice correction program  
A voice correction device includes a detector that detects a response from a user, a calculator that calculates an acoustic characteristic amount of an input voice signal, an analyzer that outputs...
8924207 Method and apparatus for transcoding audio data  
A method and apparatus for transcoding audio data. The method includes determining if AAC joint stereo exists, running a reference AC-3 rematrixing when the AAC joint stereo does not exist, when...
8914282 Wind noise reduction  
By monitoring the wind noise in a location in which a cellular telephone is operating and by applying noise reduction and/or cancellation protocols at the appropriate time via analog and/or...
8914281 Method and apparatus for processing audio signal in a mobile communication terminal  
A method and an apparatus for processing an audio signal in a mobile terminal, in which an audio signal that is received from a counterpart mobile terminal is classified into a voice signal and a...
8886526 Source separation using independent component analysis with mixed multi-variate probability density function  
Methods and apparatus for signal processing are disclosed. Source separation can be performed to extract source signals from mixtures of source signals by way of independent component analysis....
8880396 Spectrum reconstruction for automatic speech recognition  
The present technology provides techniques for transform domain reconstruction of noise-corrupted portions of an acoustic signal to emulate speech which is obscured by the noise. Replacement...
8868415 Discontinuous transmission control based on vocoder and voice activity  
A method and system is disclosed for control of discontinuous transmission based on vocoder and voice activity. An access terminal (AT) may engage in a communication session via an encoder-decoder...
8868432 Audio signal bandwidth extension in CELP-based speech coder  
A method for decoding an audio signal having a bandwidth that extends beyond a bandwidth of a CELP excitation signal in an audio decoder including a CELP-based decoder element. The method includes...
8868416 Apparatus and method for cancelling echo in joint time domain and frequency domain  
Disclosed in the present invention is a method for cancelling echo in joint time domain and frequency domain. The method includes: receiving an input receiver signal and an input transmitter...
8862465 Determining pitch cycle energy and scaling an excitation signal  
An electronic device for determining a set of pitch cycle energy parameters is described. The electronic device includes a processor and executable instructions stored in memory. The electronic...
8855322 Loudness maximization with constrained loudspeaker excursion  
An original loudness level of an audio signal is maintained for a mobile device while maintaining sound quality as good as possible and protecting the loudspeaker used in the mobile device. The...
8849657 Apparatus and method for isolating multi-channel sound source  
In an apparatus and method for isolating a multi-channel sound source, the probability of speaker presence calculated when noise of a sound source signal separated by GSS is estimated is used to...
8843365 Method and apparatus of visual feedback for latency in communication media  
A method and apparatus are provided for visualizing the latency in a conversation between a local speaker and at least one remote speaker separated from the local speaker by a communication...
8838444 Method of estimating noise levels in a communication system  
A method of estimating noise in data containing voice information and noise includes receiving the data as a sequence of input values; transforming the data by applying a first non linear mapping...
8838445 Method of removing contamination in acoustic noise measurements  
A method for the automatic removal of speech contamination from an acoustic noise signal. The method includes the steps of: (a) receiving an input acoustic noise signal; (b) automatically...
8831937 Post-noise suppression processing to improve voice quality  
Provided are methods and systems for improving quality of speech communications. The method may be for improving quality of speech communications in a system having a speech encoder configured to...
8831936 Systems, methods, apparatus, and computer program products for speech signal processing using spectral contrast enhancement  
Systems, methods, and apparatus for spectral contrast enhancement of speech signals, based on information from a noise reference that is derived by a spatially selective processing filter from a...
8825497 Systems and methods for reducing audio disturbance associated with control messages in a bitstream  
The embodiments described herein are directed to systems and methods for transmitting audio data and control segment in a single bitstream and reducing audio disturbance associated with the...
8818796 Encoder, decoder and methods for encoding and decoding data segments representing a time-domain data stream  
An apparatus for decoding data segments representing a time-domain data stream, a data segment being encoded in the time domain or in the frequency domain, a data segment being encoded in the...
8812306 Speech decoding and encoding apparatus for lost frame concealment using predetermined number of waveform samples peripheral to the lost frame  
An audio decoding device capable of suppressing an information amount for a lost flame compensation process and encoding efficiency is provided. A decoded sound source generator generates a lost...
8793126 Time/frequency two dimension post-processing  
In accordance with an embodiment, a time-frequency post-processing method of improving perceptual quality of a decoded audio signal, the method includes determining a time-frequency representation...
8781823 Voice band enhancement apparatus and voice band enhancement method that generate wide-band spectrum  
A voice band enhancement apparatus is used that includes a frequency transform unit to perform frequency transform on an input signal to calculate a spectrum, a mapping function calculating unit...
8781821 Voiced interval command interpretation  
A method is disclosed for controlling a voice-activated device by interpreting a spoken command as a series of voiced and non-voiced intervals. A responsive action is then performed according to...
8781826 Method for operating a speech recognition system  
A method for operating a speech recognition system is described in which a speech signal (S1) of a user is detected and analyzed so as to recognize speech information contained in the speech...
8775166 Coding/decoding method, system and apparatus  
An encoding method includes: extracting core layer characteristic parameters and enhancement layer characteristic parameters of a background noise signal, encoding the core layer characteristic...
8775171 Noise suppression  
A method and computing system for suppressing noise in an audio signal, comprising: receiving the audio signal at signal processing means; determining that another signal is input to the signal...
8775168 Yule walker based low-complexity voice activity detector in noise suppression systems  
A Yule-Walker based, low-complexity voice activity detector (VAD) is disclosed. An input signal is typically noisy speech (i.e., corrupted with, for example, babble noise). In one embodiment, a...
8761410 Systems and methods for multi-channel dereverberation  
The present technology provides robust, high quality dereverberation of an acoustic signal which can overcome or substantially alleviate the problems associated with the diverse and dynamic nature...
8762158 Decoding method and decoding apparatus therefor  
A method and apparatus for generating synthesis audio signals are provided. The method includes decoding a bitstream; splitting the decoded bitstream into n sub-band signals; generating n...
8744845 Method for processing noisy speech signal, apparatus for same and computer-readable recording medium  
A noise estimation method for a noisy speech signal according to an embodiment of the present invention includes the steps of approximating a transformation spectrum by transforming an input noisy...
8738373 Frame signal correcting method and apparatus without distortion  
In a signal processing method and apparatus, a predetermined correcting signal having a same frame length as a second frame signal in which predetermined processing is performed to a frequency...
8731917 Methods and arrangements in a telecommunications network  
The present invention relates to a postfilter and a postfilter control to be associated with a postfilter for improving perceived quality of speech reconstructed at a speech decoder. The...
8731915 Method and apparatus to remove noise from an input signal in a noisy environment, and method and apparatus to enhance an audio signal in a noisy environment  
A method of removing noise includes detecting a frequency spectrum of a noise signal around the transmitting terminal, when an input signal which is a mixture of a voice signal and the noise...
8731913 Scaled window overlap add for mixed signals  
A method for overlap-adding signals useful for performing frame loss concealment (FLC) in an audio decoder as well as in other applications. The method uses a dynamic mix of windows to overlap two...