EUROSPEECH 2001 Scandinavia
7th European Conference on Speech Communication and Technology

Aalborg, Denmark
September 3-7, 2001


Acoustic Echo Control and Noise Reduction for Cabin Car Communication

Eduardo Lleida, Enrique Masgrau, Alfonso Ortega

University of Zaragoza, Spain

A Cabin Car Communication System (CCCS) has the goal of improving the communication among passengers inside the car. Wind, road and engine noise, the distance between passengers and other factors make difficult the communication inside vehicles. The driver must often look away from the road and passengers move out of normal seating positions. The CCCS makes use of a set of microphones to pick up the speech and the car-audio loudspeakers to reinforce the sound level. This scenario presents a great challenger for acoustic echo control and noise reduction. Acoustic echo control must prevent the overall system from howling and becoming unstable with the additional problem that the system must always work with double talk. The noise reduction must clean the microphone signal to avoid the reinforce of the noise inside the car. In this paper, we describe a combined acoustic echo control and noise reduction algorithm suitable for cabin car communication systems. A real-time system has been developed working together with the European Technological Center of Lear Corporation.

Full Paper

Bibliographic reference.  Lleida, Eduardo / Masgrau, Enrique / Ortega, Alfonso (2001): "Acoustic echo control and noise reduction for cabin car communication", In EUROSPEECH-2001, 1585-1588.