Patent ID: 9685156
Date: 2017-06-20
CPC Classifications: G10L

Claim:
1. An electronic device, comprising: audio circuitry for capturing ambient sound; voice command detection circuitry for determining voice commands provided by a user, the voice command detection circuitry configured to disregard, without analysing for the presence of speech, sound captured by the audio circuitry that does not exceed a first sound pressure threshold level; analyze sound captured by the audio circuitry that exceeds the first sound threshold level using a speech recognition algorithm for detecting the presence of words or ambient noise; dynamically adjust the first sound pressure threshold level based on the analysis of the captured sound; increase the first sound pressure threshold level when at least one of the captured sound is determined to be ambient noise or a word hit rate of the captured sound is below a first prescribed hit rate threshold; and decrease the first sound pressure threshold level when the captured sound includes speech having a word hit rate exceeding a second prescribed hit rate threshold or a prescribed time period has elapsed.