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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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.... |
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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... |
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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;... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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. |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |