Multiple microphone based low complexity pitch detector

摘要

Various embodiments of multiple microphone based pitch detection are provided. In one embodiment, a method includes obtaining a primary signal and a secondary signal associated with multiple microphones. A pitch value is determined based at least in part upon a level difference between the primary and secondary signals. In another embodiment, a system includes a plurality of microphones configured to provide a primary signal and a secondary signal. A level difference detector is configured to determine a level difference between the primary and secondary signals and a pitch identifier is configured to clip the primary and secondary signals based at least in part upon the level difference. In another embodiment, a method determines the presence of voice activity based upon a pitch prediction gain variation that is determined based at least in part upon a pitch lag.

主权项

1. A method, comprising:
obtaining, by a computing device, a primary signal corresponding to a primary microphone and a secondary signal corresponding to a secondary microphone; determining, by the computing device, a level difference between the primary and secondary signals; and determining, by the computing device, a pitch value based at least in part upon the determined level difference of the primary and secondary signals.