Robust Voice Activity Detector System for Use with an Earphone

摘要

An electronic device or method for adjusting a gain on a voice operated control system can include one or more processors and a memory having computer instructions. The instructions, when executed by the one or more processors causes the one or more processors to perform the operations of receiving a first microphone signal, receiving a second microphone signal, updating a slow time weighted ratio of the filtered first and second signals, and updating a fast time weighted ratio of the filtered first and second signals. The one or more processors can further perform the operations of calculating an absolute difference between the fast time weighted ratio and the slow time weighted ratio, comparing the absolute difference with a threshold, and increasing the gain when the absolute difference is greater than the threshold. Other embodiments are disclosed.

主权项

1. A method of adjusting a gain on a voice operated control system, comprising:
receiving a first microphone signal; receiving a second microphone signal; updating a slow time weighted ratio of the filtered first and second signals; updating a fast time weighted ratio of the filtered first and second signals; calculating an absolute difference between the fast time weighted ratio and the slow time weighted ratio; comparing the absolute difference with a threshold; and increasing the gain when the absolute difference is greater than the threshold.