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Method for adjusting a voice recognition system comprising a speaker and a microphone, and voice recognition system

  • US 10,115,392 B2
  • Filed: 06/03/2010
  • Issued: 10/30/2018
  • Est. Priority Date: 06/03/2010
  • Status: Active Grant
First Claim
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1. A method for adjusting a voice recognition system to different surrounding acoustic noise levels and voice characteristics, wherein the voice recognition system comprises a speaker and a microphone, the method comprising the steps of:

  • a) memorizing an audio frequency signal by the voice recognition system;

    wherein the audio frequency signal comprises any prompt output by the speaker or any audible signal output by the speaker and/or a prompt signal prompting for a user input signal and/or a welcome signal;

    wherein the audio frequency signal is recognized by the voice recognition system;

    b) playing back the audio frequency signal by means of the speaker, wherein after the playing back of the audio frequency signal, a user is prompted to provide the user input signal;

    c) detecting an acoustic effect of the playing back of the audio frequency signal by the microphone;

    d) generating a detection signal by the microphone based on the detected acoustic effect of the playing back of the audio frequency signal;

    e) automatically adjusting parameters of the voice recognition system upon detecting the generated detection signal and prior to the user operatively using the voice recognition system; and

    f) receiving the user input signal by the voice recognition system;

    wherein the user input signal comprises a first voice command;

    wherein the steps a) through f) are performed in sequential order;

    wherein the adjusting of parameters of the voice recognition system includes an adjustment of a gain of an amplifier associated to the microphone, speaker or both;

    wherein the voice recognition system is in a vehicle; and

    wherein the step of playing back the audio frequency signal is conducted during an initial use of the voice recognition system once the user enters the vehicle.

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