US 2020/0029162 A1 · AUDIO DEVICE AND COMPUTER READABLE PROGRAM

Abstract

[Problem] To provide an audio device capable of further reliably accepting voice control even during playback. [Solution] An audio device 2 comprises: a parameter determination unit 30 that determines an echo-back parameter for canceling a wraparound signal that enters voice-control microphones 20-1, 20-2 as the audio from a speaker during playback; a filter processing unit 27 that performs filtering using the echo-back parameter for audio signals collected by the voice-control microphones 20-1, 20-2 during playback; a voice recognition unit 28 that performs voice recognition processing for a filtered audio signal; and an operation acceptance unit 29 that accepts voice control on the basis of the voice recognition results. The parameter determination unit 30 outputs a test signal from a speaker and collects the test signal through the voice-control microphones 20-1, 20-2, and determines the echo-back parameter on the basis of the delay time and the attenuation rate of the collected audio signal relative to the test signal.

Claims4

Dependent claims

An audio device having a function of receiving a voice operation, the audio device comprising:

audio reproduction means for reproducing an audio signal to output the audio signal to a speaker;
a voice operation reception microphone configured to receive a voice operation from a user;
parameter determination means for determining an echo back parameter for canceling a diffracted signal that is output from the speaker to the voice operation reception microphone in a diffracted manner during audio reproduction;
filter processing means for filtering a sound signal collected by the voice operation reception microphone during audio reproduction with the echo back parameter determined by the parameter determination means;
and
voice operation reception means for executing voice recognition processing for the collected sound signal filtered by the filter processing means to receive the voice operation,
wherein the parameter determination means is configured to:
output a test signal from the speaker;
collect the test signal by the voice operation reception microphone;
and
determine the echo back parameter based on a delay time and attenuation rate of the sound signal collected by the voice operation reception microphone with respect to the test signal.

8 more elements

Dependencies are inferred from the claim text.

Audio device and computer readable program

Life of this patent

Audio device and computer readable program

Life of this patent

Abstract

Claims4