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9047859 Apparatus and method for encoding and decoding an audio signal using an aligned look-ahead portion  
An apparatus for encoding an audio signal having a stream of audio samples has: a windower for applying a prediction coding analysis window to the stream of audio samples to obtain windowed data...
9037456 Method and apparatus for audio coding and decoding  
An encoder and decoder for processing an audio signal including generic audio and speech frames are provided herein. During operation, two encoders are utilized by the speech coder, and two...
9037457 Audio codec supporting time-domain and frequency-domain coding modes  
An audio codec supporting both, time-domain and frequency-domain coding modes, having low-delay and an increased coding efficiency in terms of iterate/distortion ratio, is obtained by configuring...
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...
9026434 Frame erasure concealment for a multi rate speech and audio codec  
An audio coding terminal and method is provided. The terminal includes a coding mode setting unit to set an operation mode, from plural operation modes, for input audio coding by a codec...
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...
9020812 Audio signal processing method and device  
Disclosed is an audio signal processing method comprising the steps of: receiving an audio signal containing current frame data; generating a first temporary output signal for the current frame...
9020814 Pulse encoding and decoding method and pulse codec  
In a pulse encoding and decoding method and a pulse codec, more than two tracks are jointly encoded, so that free codebook space in the situation of single track encoding can be combined during...
9020813 Speech enhancement system and method  
A speech enhancement system improves speech conversion within an encoder and decoder. The system includes a first device that converts sound waves into operational signals. A second device selects...
9015040 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Apparatus and method for encoding and decoding an audio signal using an aligned look-ahead portion
 
An apparatus for encoding an audio signal having a stream of audio samples has: a windower for applying a prediction coding analysis window to the stream of audio samples to obtain windowed data...
8990075 Method, apparatus, and medium for bandwidth extension encoding and decoding  
Provided are a method, apparatus, and medium for encoding/decoding a high frequency band signal by using a low frequency band signal corresponding to an audio signal or a speech signal....
8990094 Coding and decoding a transient frame  
An electronic device for coding a transient frame is described. The electronic device includes a processor and executable instructions stored in memory that is in electronic communication with the...
8990073 Method and device for sound activity detection and sound signal classification  
A device and method for estimating a tonal stability of a sound signal include: calculating a current residual spectrum of the sound signal; detecting peaks in the current residual spectrum;...
8990074 Noise-robust speech coding mode classification  
A method of noise-robust speech classification is disclosed. Classification parameters are input to a speech classifier from external components. Internal classification parameters are generated...
8983830 Stereo signal encoding device including setting of threshold frequencies and stereo signal encoding method including setting of threshold frequencies  
An encoding device can achieve both highly effective encoding/decoding and high-quality decoding audio when executing a scalable stereo audio encoding by using MDCT and ICP. In the encoding...
8983831 Encoder, decoder, and method therefor  
Provided is an encoder which can effectively encode/decode spectrum data of a broad frequency signal in a high frequency range, can dramatically reduce the number of the arithmetic operations to...
8977557 Method, medium, and apparatus encoding and/or decoding multichannel audio signals  
A method, medium, and apparatus encoding and/or decoding a multichannel audio signal. The method includes detecting the type of spatial extension data included in an encoding result of an audio...
8977546 Encoding device, decoding device and method for both  
Disclosed are an encoding device and a decoding device which suppress the occurrence of pre-echo artifacts and post-echo artifacts caused by a high layer having a low temporal resolution, and...
8972248 Band broadening apparatus and method  
A band broadening apparatus includes a processor configured to analyze a fundamental frequency based on an input signal bandlimited to a first band, generate a signal that includes a second band...
8972249 Decoding apparatus and method, encoding apparatus and method, and program  
The present invention relates to a decoding apparatus, a decoding method, an encoding apparatus, an encoding method, and programs that can shorten the delay time caused by the band extension at...
8965773 Coding with noise shaping in a hierarchical coder  
A method is provided for hierarchical coding of a digital audio signal comprising, for a current frame of the input signal: a core coding, delivering a scalar quantization index for each sample of...
8959018 Pulse encoding and decoding method and pulse codec  
In a pulse encoding and decoding method and a pulse codec, more than two tracks are jointly encoded, so that free codebook space in the situation of single track encoding can be combined during...
8954322 Acoustic shock protection device and method thereof  
An acoustic shock protection device includes a prediction gain estimator and an audio compressor. The prediction gain estimator is configured to analyze a plurality of linear prediction...
8954321 Unified speech/audio codec (USAC) processing windows sequence based mode switching  
A Unified Speech and Audio Codec (USAC) that may process a window sequence based on mode switching is provided. The USAC may perform encoding or decoding by overlapping between frames based on a...
8949119 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...
8938387 Audio encoder and decoder  
The present invention teaches a new audio coding system that can code both general audio and speech signals well at low bit rates. A proposed audio coding system comprises linear prediction unit...
8935162 Encoding device, decoding device, and method thereof for specifying a band of a great error  
Disclosed is an encoding device which can accurately specify a band having a large error among all the bands by using a small calculation amount. A first position identifier uses a first layer...
8935158 Apparatus and method for comparing frames using spectral information of audio signal  
Disclosed is a frame comparison apparatus and method for comparing frames included in an audio signal by using spectrum information. The frame comparison apparatus includes a spectrum information...
8935161 Encoding device, decoding device, and method thereof for secifying a band of a great error  
Disclosed is an encoding device which can accurately specify a band having a large error among all the bands by using a small calculation amount. A first position identifier uses a first layer...
8930185 Speech feature extraction apparatus, speech feature extraction method, and speech feature extraction program  
A speech feature extraction apparatus, speech feature extraction method, and speech feature extraction program. A speech feature extraction apparatus includes: first difference calculation module...
8930197 Apparatus and method for encoding and reproduction of speech and audio signals  
A method comprising receiving at a user equipment encrypted content. The content is stored in said user equipment in an encrypted form. At least one key for decryption of said stored encrypted...
8930200 Vector joint encoding/decoding method and vector joint encoder/decoder  
A vector joint encoding/decoding method and a vector joint encoder/decoder are provided, more than two vectors are jointly encoded, and an encoding index of at least one vector is split and then...
8930198 Low bitrate audio encoding/decoding scheme having cascaded switches  
An audio encoder has a first information sink oriented encoding branch, a second information source or SNR oriented encoding branch, and a switch for switching between the first encoding branch...
8924220 Multiband compressor  
In a multiband compressor 100, a level calculation unit 121 calculates a signal level inputted for each of bands, a gain calculation unit 122 calculates a gain value from the calculated signal...
8924201 Audio encoder and decoder  
The present invention teaches a new audio coding system that can code both general audio and speech signals well at low bit rates. A proposed audio coding system comprises linear prediction unit...
8924204 Method and apparatus for wind noise detection and suppression using multiple microphones  
Unlike sound based pressure waves that go everywhere, air turbulence caused by wind is usually a fairly local event. Therefore, in a system that utilizes two or more spatially separated...
8924200 Audio signal bandwidth extension in CELP-based speech coder  
A method for decoding an audio signal in a decoder having a CELP-based decoder element including a fixed codebook component, at least one pitch period value, and a first decoder output, wherein a...
8918324 Method for decoding an audio signal based on coding mode and context flag  
A method for coding and decoding an audio signal or speech signal and an apparatus adopting the method are provided.
8918314 Encoding apparatus, decoding apparatus, encoding method and decoding method  
An encoding apparatus includes a first layer encoder that encodes an input signal, a first layer decoder that decodes the first layer encoded data, a weighting filter that filters a first layer...
8914280 Method and apparatus for encoding/decoding speech signal  
An apparatus and method for encoding/decoding a speech signal which determines a variable bit rate based on reserved bits obtained from a target bit rate, is provided. The variable bit rate is...
8909521 Coding method, coding apparatus, coding program, and recording medium therefor  
A lossless coding technique for near-logarithmic companded PCM that achieves high compression performance is provided. In coding, the coding method that produces the smaller code amount is...
8909520 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Pulse encoding and decoding method and pulse codec
 
In a pulse encoding and decoding method and a pulse codec, more than two tracks are jointly encoded, so that free codebook space in the situation of single track encoding can be combined during...
8903098 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...
8898053 Encoding device, decoding device, and methods therein  
An encoding device, a decoding device, and related methods are provided that eliminate the loss of synchronization of the adaptive filters of a terminal at the encoding end and a terminal at the...
8898059 LPC residual signal encoding/decoding apparatus of modified discrete cosine transform (MDCT)-based unified voice/audio encoding device  
Disclosed is an LPC residual signal encoding/decoding apparatus of an MDCT based unified voice and audio encoding device. The LPC residual signal encoding apparatus analyzes a property of an input...
8898057 Encoding apparatus, decoding apparatus and methods thereof  
Disclosed is an encoding apparatus that can efficiently encode a signal that is a broad or extra-broad band signal or the like, thereby improving the quality of a decoded signal. This encoding...
8892428 Encoding apparatus, decoding apparatus, encoding method, and decoding method for adjusting a spectrum amplitude  
An encoding device is provided for increasing the quality of an encoded signal, even when encoding music signals. In the encoding device, a Code-Excited Linear Prediction (CELP) encoder generates...
8892425 Multi-layered speech recognition apparatus and method  
A multi-layered speech recognition apparatus and method, the apparatus includes a client checking whether the client recognizes the speech using a characteristic of speech to be recognized and...
8891775 Method and encoder for processing a digital stereo audio signal  
The invention discloses a method and an encoder for processing a digital audio stereo signal. A digital audio encoder for coding such audio signal comprises a predictive Temporal Noise Shaping...
8880411 Critical sampling encoding with a predictive encoder  
A method for encoding and decoding a digital audio signal is provided, said method comprising the steps of: encoding a first sequence of samples of the digital signal according to a transform...