Audio daiyara null for load

摘要

PURPOSE: To improve the sound recognition of a sound dial as against noise, which realizes the dial of an automobile telephone set by inputting sound from a hands-free microphone provided in a vehicle. ;CONSTITUTION: A frequency analysis part 8 analyzing a sound signal from the hands-free microphone for respective frequency channels, a sound section detection part 9 detecting a sound section from the sound signal transmitted from the frequency analysis part 8 and a sound recognition part 10 which compares the sound signal of the section designated in the sound section detection part 9 with the registered sound signal and recognizes sound are given to a sound dialler 2. The sound section detection part 9 is connected to the vehicle speed sensor of the vehicle and weights respective frequency channel signals from the frequency analysis part 8 in accordance with a vehicle signal from the vehicle speed sensor.;COPYRIGHT: (C)1993,JPO&Japio