Brevets & Inventions
2011

JanuaryAudio encoder and decoder for encoding and decoding frames of a sampled audio signal
R. Geiger, B. Grill, B. Bessette, P. Gournay, G. Fuchs, M. Multrus, M. Neuendorf & G. Schuller

JanuaryAudio encoder and decoder for encoding and decoding audio samples
J. Lecomte, P. Gournay, S. Bayer, M. Multrus, B. Bessette & B. Grill


2010

OctoberSimultaneous time-domain and frequency-domain noise shaping for TDAC transforms
B. Bessette

JuneForward time-domain aliasing cancellation with application in weighted or original signal domain
B. Bessette


2009

NovemberMethod and device for adaptive bandwidth pitch search in coding wideband signals
B. Bessette, R. Salami & R. Lefebvre

JulyVariable bit rate LPC filter quantizing and inverse quantizing device and method
B. Bessette, P. Gournay & R. Salami

JulyDevice and method for quanitizing and inverse quanitizing LPC filters in a super-frame
P. Gournay, B. Bessette & R. Salami

JulyMulti-reference LPC filter quantization and inverse quantization device and method
P. Gournay, B. Bessette & R. Salami

MarchSystem and method for enhancing a decoded tonal sound signal
T. Vaillancourt, M. Jelinek, V. Malenovsky & R. Salami


2008

OctoberSignal modification method for efficient coding of speech signals
M. Tammi, M. Jelinek, C. Laflamme & V. Ruoppila

September Method and device for fast algebraic codebook search in speech and audio coding
R. Salami, V. Eksler & M. Jelinek

September Method and device for efficient quantization of transform information in an embedded speech and audio codec
T. Vaillancourt & R. Salami

June Method and device for sound activity detection and sound signal classification
V. Malenovsky, M. Jelinek, T. Vaillancourt & R. Salami


2007

December Device and method for frame erasure concealment in a PCM codec interoperable with the ITU-T recommendation G.711
V. Malenovsky & R. Salami

October Device and method for noise shaping in a multilayer embedded codec interoperable with the ITU-T G.711 standard
B. Bessette, J. Lapierre, V. Malenovsky, R. Lefebvre, R. Salami

October Method and device for coding transition frames in speech signals
V. Eksler, M. Jelinek & R. Salami

AprilMethod for the time scaling of an audio signal
P. Gournay, C. Laflamme & R. Salami

FebruaryMethods and devices for low-frequency emphasis during audio compression based on ACELP/TCX
B. Bessette


2006

DecemberMethod and device for efficient frame erasure concealment in speech codecs
T. Vaillancourt, M. Jelinek, P. Gournay & R. Salami

NovemberMethod and device for robust predictive vector quantization of linear prediction parameters in sound signal coding
M. Jelinek

OctoberMethod and apparatus for resynchronizing packetized audio streams
K.D. Anderson & P. Gournay

AugustMethod and device for adaptive bandwidth pitch search in coding wideband signals
B. Bessette, R. Salami & R. Lefebvre

JuneSystem and method for adaptative transmission of comfort noise parameters during discontinuous speech transmission
P. Gournay, M. Jelinek & S. C. Greer


2005

NovemberMethod and device for low bit rate speech coding
B. Bessette

FebruaryMethods and devices for switching between sound signal coding modes at a coder and for producing target signals at a decoder
B. Bessette

JanuaryMethod for interoperation between adaptive multi-rate wideband (AMR-WB) and multi-mode variable bit-rate wideband (VMR-WB) codecs
M. Jelinek & R. Salami

JanuaryMethod and device for robust predictive vector quantization of linear prediction parameters in variable bit rate speech coding
M. Jelinek

JanuaryMethod and device for gain quantization in variable bit rate wideband speech coding
M. Jelinek & R. Salami

JanuaryMethods and devices for source controlled variable bit-rate wideband speech coding
M. Jelinek


2004

DecemberMethod and device for speech enhancement in the presence of background noise
M. Jelinek


2003

JuneMethod and device for efficient in-band dim-and-burst signaling and half-rate max operation in variable bit-rate wideband speech coding for CDMA wireless systems
M. Jelinek & R. Salami

MayMethod and device for efficient frame erasure concealment in linear predictive based speech codecs
M. Jelinek & P. Gournay

MayMethod and system for multi-rate lattice vector quantization of a signal
B. Bessette, S. Ragot & J-P Adoul

MayMethod and device for frequency-selective pitch enhancement of synthesized speech
B. Bessette, C. Laflamme, M. Jelinek & R. Lefebvre


2002

DecemberSignal modification method for efficient coding of speech signals
M. Tammi, M. Jelinek, C. Laflamme & V. Ruoppila


2001

NovemberIndexing pulse positions and signs in algebraic codebooks for coding of wideband signals
B. Bessette

NovemberPeriodicity enhancement in decoding wideband signals
B. Bessette, R. Salami & R. Lefebvre

JunePerceptual weighting device and method for efficient coding of wideband signals
B. Bessette, R. Salami & R. Lefebvre


2000

NovemberGain-smoothing in wideband speech and audio signal decoder
B. Bessette, R. Salami & R. Lefebvre


1999

OctoberMethod and device for adaptive bandwidth pitch search in coding wideband signals
B. Bessette, R. Salami & R. Lefebvre

OctoberHigh frequency content recovering method and device for over-sampled synthesized wideband signal
B. Bessette, R. Salami & R. Lefebvre

JanuaryInstability eradication for analysis-by-synthesis speech codecs
T. Honkanen, C. Laflamme & J-P. Adoul


1997

JuneBaud-rate-independent ASVD transmission built around G.729 speech-coding standard
R. Salami, C. Laflamme, J-P. Adoul, A. S. Adri, S. Ardalan & H. Ye

AprilMethod and device for eradicating instability due to periodic signals in analysis-by-synthesis speech codecs
T. Honkanen, C. Laflamme & J-P. Adoul


1995

JulyDepth-first algebraic-codebook search for fast coding of speech
J-P. Adoul & C. Laflamme

JulyAlgebraic codebook with signal-selected pulse amplitude/position combinations for fast coding of speech
J-P. Adoul & C. Laflamme

MayFast sparse-algebraic-codebook search for efficient speech coding
J-P. Adoul & C. Laflamme

AprilPredictive split-matrix quantization of spectral parameters for efficient coding of speech
C. Laflamme, R. Salami & J-P. Adoul


1992

SeptemberDynamic codebook for efficient speech coding based on algebraic codes
J-P. Adoul & C. Laflamme


1982

FebruaryApparatus and method of reducing the bit rate of PCM speech
J-P. Adoul


1976

MayMethod and apparatus for speech detection of PCM multiplexed voice channels
J-P. Adoul & F. Daaboul



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