Title:
通信システムと共に用いるためのマイクロフォンおよび発声活動検出(VAD)構成
Document Type and Number:
Japanese Patent JP2005522078
Kind Code:
A
Abstract:
Communication systems are described, including both portable handset and headset devices, which use a number of microphone configurations to receive acoustic signals of an environment. The microphone configurations include, for example, a two-microphone array including two unidirectional microphones, and a two-microphone array including one unidirectional microphone and one omnidirectional microphone. The communication systems also include Voice Activity Detection (VAD) devices to provide information of human voicing activity. Components of the communications systems receive the acoustic signals and voice activity signals and, in response, automatically generate control signals from data of the voice activity signals. Components of the communication systems use the control signals to automatically select a denoising method appropriate to data of frequency subbands of the acoustic signals. The selected denoising method is applied to the acoustic signals to generate denoised acoustic signals when the acoustic signal includes speech and noise.
Inventors:
Burnett, Gregory Sea
Pettit, Nicholas Jay
Ein Adi, Andrew Y
Asai Lee, Alexander M
Pettit, Nicholas Jay
Ein Adi, Andrew Y
Asai Lee, Alexander M
Application Number:
JP2003581167A
Publication Date:
July 21, 2005
Filing Date:
March 27, 2003
Export Citation:
Assignee:
Alifucom
International Classes:
H04R1/40; G10L11/02; G10L25/93; H04M1/00; H04R3/00; (IPC1-7): H04R3/00; G10L21/02; H04M1/00; H04R1/40
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Motoharu Nakanishi
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Motoharu Nakanishi