383 citations · 1.4k across the 49 of their papers we have counts for
13 papers · 1 filter
A Hybrid DSP/Deep Learning Approach to Real-Time Full-Band Speech Enhancement
Jean-Marc Valin
Despite noise suppression being a mature area in signal processing, it remains highly dependent on fine tuning of estimator algorithms and parameters. In this paper, we demonstrate…
Channel Decorrelation For Stereo Acoustic Echo Cancellation In High-Quality Audio Communication
Jean-Marc Valin
In this paper, we address an important problem in high-quality audio communication systems. Acoustic echo cancellation with stereo signals is generally an under-determined problem…
Microphone array post-filter for separation of simultaneous non-stationary sources
Jean-Marc Valin, Jean Rouat, François Michaud
Microphone array post-filters have demonstrated their ability to greatly reduce noise at the output of a beamformer. However, current techniques only consider a single source of in…
Improved Noise Weighting in CELP Coding of Speech - Applying the Vorbis Psychoacoustic Model To Speex
Jean-Marc Valin, Christopher Montgomery
One key aspect of the CELP algorithm is that it shapes the coding noise using a simple, yet effective, weighting filter. In this paper, we improve the noise shaping of CELP using a…
Low-Complexity Iterative Sinusoidal Parameter Estimation
Jean-Marc Valin, Daniel V. Smith, Christopher Montgomery +1
Sinusoidal parameter estimation is a computationally-intensive task, which can pose problems for real-time implementations. In this paper, we propose a low-complexity iterative met…
Speex: A Free Codec For Free Speech
Jean-Marc Valin
The Speex project has been started in 2002 to address the need for a free, open-source speech codec. Speex is based on the Code Excited Linear Prediction (CELP) algorithm and, unli…
Perceptually-Motivated Nonlinear Channel Decorrelation For Stereo Acoustic Echo Cancellation
Jean-Marc Valin
Acoustic echo cancellation with stereo signals is generally an under-determined problem because of the high coherence between the left and right channels. In this paper, we present…
A New Robust Frequency Domain Echo Canceller With Closed-Loop Learning Rate Adaptation
Jean-Marc Valin, Iain B. Collings
One of the main difficulties in echo cancellation is the fact that the learning rate needs to vary according to conditions such as double-talk and echo path change. Several methods…
Bandwidth Extension of Narrowband Speech for Low Bit-Rate Wideband Coding
Jean-Marc Valin, Roch Lefebvre
Wireless telephone speech is usually limited to the 300-3400 Hz band, which reduces its quality. There is thus a growing demand for wideband speech systems that transmit from 50 Hz…
Extension spectrale d'un signal de parole de la bande téléphonique à la bande AM
Jean-Marc Valin
This document proposes a bandwidth extension system producing a wideband signal from a narrowband speech signal. The extension is performed independently for high and low frequenci…
On Adjusting the Learning Rate in Frequency Domain Echo Cancellation With Double-Talk
Jean-Marc Valin
One of the main difficulties in echo cancellation is the fact that the learning rate needs to vary according to conditions such as double-talk and echo path change. In this paper w…
An Iterative Linearised Solution to the Sinusoidal Parameter Estimation Problem
Jean-Marc Valin, Daniel V. Smith, Christopher Montgomery +1
Signal processing applications use sinusoidal modelling for speech synthesis, speech coding, and audio coding. Estimation of the model parameters involves non-linear optimisation m…
A High-Quality Speech and Audio Codec With Less Than 10 ms Delay
Jean-Marc Valin, Timothy B. Terriberry, Christopher Montgomery +1
With increasing quality requirements for multimedia communications, audio codecs must maintain both high quality and low delay. Typically, audio codecs offer either low delay or hi…