Jon Gibbs
Motorola
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Jon Gibbs.
international conference on acoustics, speech, and signal processing | 2008
Milan Jelinek; Tommy Vaillancourt; Ali Erdem Ertan; Jacek Stachurski; Anssi Rämö; Lasse Laaksonen; Jon Gibbs; Stefan Bruhn
We present the Q.EV-VBR winning candidate codec recently selected by Question 9 of Study Group 16 (Q9/16) of ITU-T as a baseline for the development of a scalable solution for wideband speech and audio compression at rates between 8 kb/s and 32 kb/s. The Q9/16 codec is an embedded codec comprising 5 layers where higher layer bitstreams can be discarded without affecting the decoding of the lower layers. The two lower layers are based on the CELP technology where the core layer takes advantage of signal classification based encoding. The higher layers encode the weighted error signal from lower layers using overlap-add transform coding. The codec has been designed with the primary objective of a high-performance wideband speech coding for error- prone telecommunications channels, without compromising the quality for narrowband/wideband speech or wideband music signals. The codec performance is demonstrated with selected test results.
IEEE Communications Magazine | 2009
Milan Jelinek; Tommy Vaillancourt; Jon Gibbs
This article is an overview of the standardization, architecture, and performance of the new ITU-T Recommendation G.718. G.718 is an embedded variable bit rate codec providing a scalable solution for compression of 8 and 16 kHz sampled speech and audio signals at rates between 8 kb/s and 32 kb/s. It comprises five layers where higher-layer bitstreams can be discarded without affecting the lower layersiquest decoding. The codec also has an optional core layer interoperable with ITU-T G.722.2 (3GPP AMR-WB) at 12.65 kb/s. G.718 was designed to provide high speech quality at low bit rates and to be robust to significant rates of frame erasures or packet losses. It is also targeting good quality for generic audio at higher rates.
international conference on acoustics, speech, and signal processing | 2008
Anssi Rämö; Henri Toukomaa; S. Craig Greer; Lasse Laaksonen; Jacek Stachurski; A. Erdem Ertan; Jonas Svedberg; Jon Gibbs; Tommy Vaillancourt
ITU-T has selected the candidate submitted by Ericsson, Nokia, Motorola, VoiceAge, and Texas Instruments as the baseline for the G.EV-VBR coding standard. G.EV-VBR is an embedded scalable speech codec that uses state-of-the-art technology to provide the most efficient encoded speech available for various real-time applications. EV-VBR encodes both narrowband (NB) and wideband (WB) speech signals starting at 8 kbps. Near perfect wideband representation is achieved at 32 kbps for all signal types. The bit stream is divided into five robust layers, providing sufficient granularity, in particular for VoIP applications. In addition, an extension to the codec will provide super- wideband and stereo capability by adding layers to the codec. Extensive listening tests were conducted during the ITU-T selection phase to support selection of the best- performing candidate. The selected EV-VBR candidate passed 69 of 70 required and 25 of 28 objective terms of reference.
Archive | 1995
Anthony P. van den Heuvel; Nicholas William Whinnett; William Neil Robinson; Jon Gibbs
european signal processing conference | 2008
Tommy Vaillancourt; Milan Jelinek; A. Erdem Ertan; Jacek Stachurski; Anssi Rämö; Lasse Laaksonen; Jon Gibbs; Udar Mittal; Stefan Bruhn; Volodya Grancharov; Masahiro Oshikiri; Hiroyuki Ehara; Dejun Zhang; Fuwei Ma; David Virette; Stéphane Ragot
conference of the international speech communication association | 2010
Lasse Laaksonen; Mikko Tammi; Vladimir Malenovsky; Tommy Vaillancourt; Mi Suk Lee; Tomofumi Yamanashi; Masahiro Oshikiri; Claude Lamblin; Balazs Kovesi; Lei Miao; Deming Zhang; Jon Gibbs; Holly Francois
Archive | 1995
Jon Gibbs; Anthony P. van den Heuvel; William Weybourne Farnham Robinson; Nicholas William Whinnett
Archive | 1995
Anthony P. van den Heuvel; Nicholas William Whinnett; William Neil Robinson; Jon Gibbs
Archive | 1995
Anthony P. van den Heuvel; Nicholas William Whinnett; William Neil Robinson; Jon Gibbs
Archive | 1995
Jon Gibbs; Anthony P. van den Heuvel; William Weybourne Farnham Robinson; Nicholas William Whinnett