Invention Grant
- Patent Title: Keystroke sound suppression
- Patent Title (中): 击键声音抑制
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Application No.: US12328789Application Date: 2008-12-05
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Publication No.: US08213635B2Publication Date: 2012-07-03
- Inventor: Qin Li , Michael Lewis Seltzer , Chao He
- Applicant: Qin Li , Michael Lewis Seltzer , Chao He
- Applicant Address: US WA Redmond
- Assignee: Microsoft Corporation
- Current Assignee: Microsoft Corporation
- Current Assignee Address: US WA Redmond
- Agency: Hope Baldauff Hartman, LLC
- Main IPC: H04B15/00
- IPC: H04B15/00 ; G10L11/06

Abstract:
An audio signal is received that might include keyboard noise and speech. The audio signal is digitized and transformed from a time domain to a frequency domain. The transformed audio is analyzed to determine whether there is likelihood that keystroke noise is present. If it is determined there is high likelihood that the audio signal contains keystroke noise, a determination is made as to whether a keyboard event occurred around the time of the likely keystroke noise. If it is determined that a keyboard event occurred around the time of the likely keystroke noise, a determination is made as to whether speech is present in the audio signal around the time of the likely keystroke noise. If no speech is present, the keystroke noise is suppressed in the audio signal. If speech is detected in the audio signal or if the keystroke noise abates, the suppression gain is removed from the audio signal.
Public/Granted literature
- US20100145689A1 KEYSTROKE SOUND SUPPRESSION Public/Granted day:2010-06-10
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