Présentation

Sujets de recherche

Algorithmes, Modélisation et simulation, Transmission et traitement des signaux numériques.

Disciplines de recherche

Génie informatique et génie logiciel.

Mots-clés

Algorithmique, Audio numérique, Codage, Compression, DSP, Psychoacoustique, Télécommunications, Traitement de la parole.

Langues parlées et écrites

Anglais, Français

Prix et distinctions

• Prix du mérite Jacques Bazinet 2012 for Best Teacher. Université de Sherbrooke. (Prix / Récompense).
• Prix du mérite Jacques Bazinet 2013 for Best Teacher. Université de Sherbrooke. (Prix / Récompense).
• Prix du mérite Jacques Bazinet 2015 for Best Teacher. Université de Sherbrooke. (Prix / Récompense).

Publications

Articles de revue

• Neuendorf M, Multrus M, Rettelbach N, Fuchs G, Robillard J, Lecomte J, Wilde S, Bayer S, Disch S, Helmrich C, Lefebvre R, Gournay P, Bessette B, Lapierre J, Kjörling K, Purnhagen H, Villemoes L, Oomen W, Schuijers E, Kikuiri K, Chinen T, Norimatsu T, Seng CK, Oh E, Miyoung K, Quackenbush S, Grill B. (2013). MPEG Unified Speech and Audio Coding - The ISO/MPEG Standard for High-Efficiency Audio Coding of all Content Types. Journal of the Audio Engineering Society, 61(12), 956-977. (Article publié).
• Lakhdhar K*, Lefebvre R. (2011). Context-based adaptive arithmetic encoding of EAVQ indices. IEEE Transactions on Audio, Speech and Language Processing, 20(5), 1473-1481. (Article publié).

Articles de journaux

• Neuendorf M, Multrus M, Rettelbach N, Fuchs G, Robillard J, Lecomte J, Wilde S, Bayer S, Disch S, Helmrich C, Lefebvre R, Gournay P, Bessette B, Lapierre J, Kjörling K, Purnhagen H, Villemoes L, Oomen W, Schuijers E, Kikuiri K, Chinen T, Norimatsu T, Seng CK, Oh E, Miyoung K, Quackenbush S, Grill B. (2013). MPEG Unified Speech and Audio Coding - The ISO/MPEG Standard for High-Efficiency Audio Coding of all content Types. Audio Engineering Society. 956-977.

Tests

• (2003). Tests subjectifs.

Articles de conférence

• Santini V, Gournay P, Lefebvre R. (2016). A study of the perceptual relevance of the burts phase of stop consonants with implications in speech coding. 2016 IEEE Workshop on Multimedia Signal Processing (MMSP 2016). (Article soumis).
• Labelle F, Lefebvre R, Gournay P. (2016). A subjective evaluation of the effects of speech coding on the perception of emotions. ISPACS 2016 (2016 International Symposium on Intelligent Signal Processing and Communication Systems). (Article soumis).
• Robitaille P, Trempe S, Gournay P, Lefebvre R. (2016). On the influence of quantization of the identifiability of emotions from voice coding parameters. ICASSP 2016, (Article publié).
• Desrochers S, Lefebvre R. (2015). Detection and Removal of the Birdies Artifact in Low Bit-Rate Audio. Audio Engineering Society Convention, (Article publié).
• Thai KPH, Gournay P, Charlebois S, Lefebvre R. (2015). Reconstruction of Mechanically Recorded Audio Signals using White-Light Interferometry. AES 2015, (Article publié).
• Neuendorf M, Multrus M, Rettelbach N, Fuchs G, Robilliard J, Lecomte J, Wilde S, Bayer S, Disch S, Helmric C, Lefebvre R, Gournay P, Bessette B, Lapierre J, Kjörling K, Purnhagen H, Villemoes L, Oomen W, Schuijers E, Kikuiri K, Chinen T, Norimatsu T, Seng C K, Oh E, Miyoung K, Quackenbush S and Grill B. (2012). MPEG Unified Speech and Audio Coding-The ISO/MPEG Standard for High-Efficiency Audio Coding of all Content Types. Audio Engineering Society Convention, 22 pages. (Article publié).
• Preihs S, Quackenbush S, Lefebvre R. (2011). Performance of MPEG Unified Speech and Audio Coding. Audio Engineering Society Convention, (Article publié).
• Mercier C, Lefebvre R. (2010). A blind signal-to-noise ratio estimator for high noise speech recordings. Interspeech, (Article publié).
• Dinh K.L, Dinh C.T.L, Lefebvre R. (2009). A new bandwidth extension for audio signal without using side-information. Audio Engineering Society Convention, 8 pages. (Article publié).
• Neuendorf M, Gournay P, Multrus M, Lecomte J, Bessette B, Geiger R, Bayer S, Fuchs G, Hilpert J, Rettelbach N, Nagel F, Robilliard J, Salami R, Schuller G, Lefebvre R, Grill B. (2009). A novel scheme for low bit rate unified speech and audio coding. MPEG RMO, Audio Engineering Society Convention, (Article publié).
• Vaillancourt T, Jelinek M, Salami R, Malenovsky V, Lefebvre R. (2009). Inter-tone noise reduction in a low bit rate CELP decoder. IEEE International Conference on Acoustics, Speech&Signal Processing, (Article publié).
• Neuendorf M, Gournay P, Multrus M, Lecomte J, Bessette B, Geiger R, Bayer S, Fuchs G, Hilpert J, Rettelbach N, Salami R, Schuller G, Lefebvre R, Grill B. (2009). Unified speech and audio coding scheme for high quality at low bit rates. IEEE International Conference on Acoustics, Speech&Signal Processing, Taïwan, Province de Chine, (Article publié).
• Lemyre C*, Jelinek M, Lefebvre R. (2008). New approach to voiced onset detection in speech signal and its application for frame error concealment. IEEE International Conference on Acoustics, Speech&Signal Processing, (Article publié).
• Lapierre J, Lefebvre R, Bessette B, Malenovsky V, Salami R. (2008). Noise shaping in an ITU-T G.711-interoperable embedded codec. European Signal Processing Conference, 5 pages. (Article publié).

Propriétés intellectuelles

Brevets

• (2012). Apparatus and method for processing an audio signal providing a higher temporal granularity for a combined unified speech and audio codec. WO2012045744A1. Canada. (Délivré).
• Bessette B, Salami R, and Lefebvre R. (2011). A Method and Device for Adaptive Bandwidth Pitch Search in Coding Wideband Signals. US8036885. Canada. (Délivré).
• Grill B, Bayer S, Fuchs G, Geyersberger S, Geiger R, Hilpert J, Kraemer U, Lecomte J, Multrus M, Neuendorf M, Popp H, Rettelbach N, Lefebvre R, Bessette B, Lapierre J, Gournay P, Salami R. Audio encoding/decoding scheme having a switchable bypass. US8321210. Canada. (Délivré).
• Grill B, Bayer S, Fuchs G, Geyersberger S, Geiger R, Hilpert J, Kraemer U, Lecomte J, Multrus M, Neuendorf M, Popp H, Rettelbach N, Lefebvre R, Bessette B, Lapierre J, Gournay P, Salami R. Audio encoding/decoding scheme having a switchable bypass. US8959017. États-Unis. (Délivré).
• Bessette B, Neuendorf M, Geiger R, Gournay P, Lefebvre R, Grill B, Lecomte J, Bayer S, Rettelbach N, Villemoes L, Salami R, Den Brinker A. Audio signal encoder, audio signal decoder, method for encoding or decoding an audio signal using an aliasing-cancellation. US8484038. États-Unis. (Délivré).
• Grill B, Lefebvre R, Bessette B, Lapierre J, Gournay P, Salami R, Bayer S, Fuchs G, Geyersberger S, Geiger R, Hilpert J, Kraemer U, Lecomte, Multrus M, Neuendorf M, Popp H, Rettelbach N. Low bitrate audio encoding/decoding scheme having cascaded switches. US8930198. États-Unis. (Délivré).