Patent ID: 8094838
Filing Date: 2012-01-10
Classification: G10L

Abstract:
1. A method of controlling an operating parameter of an audio emitting device using voice commands in an enclosed or partially enclosed environment where the audio emission device is producing audio emissions in response to a received audio electrical signal, comprising: (a) storing an electrical impulse response signal of the enclosed or partially enclosed environment, wherein the impulse response signal is provided by emitting a short duration audio pulse into the enclosed or partially enclosed environment and measuring the sound characteristics of the impulse; (b) providing a microphone for receiving a voice command signal by a user and the audio emission from the audio emitting device to provide a composite electrical signal representing both the received audio emission and the received voice command signal; (c) forming a convolution of the electrical impulse response signal with the received audio electrical signal to produce a convolved electrical signal representing the audio emissions from the audio emitting device; (d) subtracting the convolved electrical signal from the composite electrical signal to produce a voice-command electrical signal; and (e) using the voice-command electrical signal to change an operating parameter of the audio emission device.