Nonlinear Echo Suppression Technology Enabling Quality Handsfree Talk for Compact Equipment
Osamu Hoshuyama · NEC technical journal · 2007
This paper introduces a nonlinear echo suppression technology that enables compact equipment such as a notebook PC or cellular phone to be employed for handsfree use without a headset. In the suppression of echo, (audio feedback from the loudspeaker to the microphone) the distorted echo produced by vibrations of the compact loudspeaker or cabinet has been particularly difficult in the past. However, the newly developed frequency domain processing technology makes it possible to cancel the echo at a level that permits high-quality talk.