Laurent Pilati

NXP Semiconductors

It is now well established from a variety of studies that there is a significant benefit from combining video and audio data in detecting active speakers. However, either of the modalities can potentially mislead audiovisual fusion by inducing unreliable or deceptive information. This paper outlines active speaker detection as a multi-objective lea...

Automatic context recognition enables mobile devices to re act to changes in the environment and different situations. While many different sensors can be used for context recognition, the use of acoustic cues is among the most popular and successful. Current approaches to acoustic context recognition (ACR) are too costly in terms of computation an...

The Bluetooth Audio Distribution profile uses Low complexity sub-band Coder (SBC) as its mandatory audio compression codec. More recently, SBC has been selected for Bluetooth wideband voice communication. Since SBC was first designed for audio compression, it does not incorporate the features that speech coders commonly use. The use of Voice Activi...

Measurement of the delay is an important and common problem in communication over packet networks. The end- to-end and the round trip delay are among the factors directly impacting the quality of service as well as the user satisfaction. Multimedia gateways or base stations that perform echo cancellation or suppression often rely on the round trip...

This paper presents an acoustic echo suppressor based on spectral subtraction that takes into account the perceptual effects of human hearing. This paper also propose here a method where the echo delay does not increase the computational cost. Effectively, in wireless system, it is not uncommon to have round trip delay up to 300 ms and even more. O...