Data processing: generic control systems or specific application – Specific application – apparatus or process – Digital audio data processing system
Reexamination Certificate
2003-11-10
2009-11-03
Kuntz, Curtis (Department: 2614)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Digital audio data processing system
C381S071700
Reexamination Certificate
active
07613532
ABSTRACT:
Systems and methods for improving the signal to noise ratio for audio input in a computing system are provided. Signal to noise ratio improvements are enabled for an input audio signal by incorporating a plurality of microphones into the PC environment, for example, to improve the processing of voice or speech input or other audio capture applications. In various embodiments, a plurality of microphones are spaced apart, e.g., attached to or within a PC housing, in such a way that noise from PC components can be “subtracted” or reduced from an input audio signal, which increases the signal to noise ratio and improves audio processing accuracy. The “subtraction” or reduction techniques applied by the present invention are unique to the PC environment wherein different noises having particular characteristics can be identified, including, but not limited to, rattle of device components, fan noise and disk noise.
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Anderson Jason M.
Tanner Theodore C.
Kuntz Curtis
Microsoft Corporation
Sellers Daniel R
Woodcock & Washburn LLP
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