公开(公告)号：US11955138B2

公开(公告)日：2024-04-09

申请号：US16355676

申请日：2019-03-15

Applicant: Advanced Micro Devices, Inc.

Inventor： A Srinivas

IPC: G10L15/22 ,  G10L25/21 ,  G10L25/84 ,  G10L25/90

CPC classification number: G10L25/84 ,  G10L15/22 ,  G10L25/21 ,  G10L25/90

Abstract: Methods, devices, and systems for voice activity detection. An audio signal is received by receiver circuitry. A pitch analysis is performed on the received audio signal by pitch analysis circuitry. A higher-order statistics analysis is performed on the audio signal by statistics analysis circuitry. Logic circuitry determines, based on the pitch analysis and the higher-order statistics analysis, whether the audio signal includes a voice region. The logic circuitry outputs a signal indicating that the audio signal includes voice if the audio signal was determined to include a voice region or indicating that the audio signal does not include voice if the audio signal was determined not to include a voice region.

公开(公告)号：US10089998B1

公开(公告)日：2018-10-02

申请号：US15871741

申请日：2018-01-15

Applicant: Advanced Micro Devices, Inc.

Inventor： A Srinivas

IPC: H04R3/00 ,  G10L21/0216 ,  H04R1/40 ,  H03H21/00

Abstract: An electronic device includes a plurality of microphones, each pair of microphones in the plurality of microphones being a respective distance from one another. The electronic device also includes a beamformer functional block that receives audio signals from each of the microphones. The beamformer functional block detects a dominant microphone from among the plurality of microphones based on the audio signals from each of the microphones and the distances between the microphones, the dominant microphone being in a closest direction to a source of desired audio. The beamformer functional block also detects interfering audio signals based on phase coherence between audio signals from the dominant microphone and audio signals from other microphones in the plurality of microphones. The beamformer functional block generates a beamformed audio output signal based on the audio signals and the interfering audio signals from each of the microphones.