Invention Grant
- Patent Title: Method and apparatus for reducing noise in an audio signal
- Patent Title (中): 降低音频信号噪声的方法和装置
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Application No.: US12236124Application Date: 2008-09-23
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Publication No.: US08098830B2Publication Date: 2012-01-17
- Inventor: Guy Coker , James Purcell
- Applicant: Guy Coker , James Purcell
- Applicant Address: US CA Calabasas
- Assignee: Line 6, Inc.
- Current Assignee: Line 6, Inc.
- Current Assignee Address: US CA Calabasas
- Agency: Blakely Sokoloff Taylor & Zafman, LLP
- Main IPC: H04R5/00
- IPC: H04R5/00

Abstract:
A technique for reducing inherent noise in a real time digital audio wireless system. The technique allows for low power stereo analog to digital and digital to analog converters to be used in a battery operated real time digital audio wireless applications. The audio signal is sent to the left and right channels of an analog to digital converter with a preceding audio amp of different gain at the input to each channel. The signals are simultaneously digitized then combined to generate a new digital value resulting in noise reduction at lower amplitudes. This new data word is then transmitted via radio waves to a digital audio receiver. Once the data is received it is output simultaneously to a stereo digital to analog converter. The digital to analog conversion of both left and right channels is then summed using a resistor network and an audio amplifier. The audio amplifier output is then reduced to create further reduction of noise at all amplitudes.
Public/Granted literature
- US20090086984A1 Method and Apparatus for Reducing Noise in an Audio Signal Public/Granted day:2009-04-02
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