Invention Grant
- Patent Title: Clipping protection in fixed-width audio mixing
- Patent Title (中): 剪切保护在固定宽度音频混合
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Application No.: US13271123Application Date: 2011-10-11
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Publication No.: US08831249B1Publication Date: 2014-09-09
- Inventor: Jan Skoglund , Andrew John MacDonald
- Applicant: Jan Skoglund , Andrew John MacDonald
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Main IPC: H04B1/00
- IPC: H04B1/00 ; H03G3/00

Abstract:
A mixing system provides both clipping protection and signal level conservation while the system operates in the original width type. The mixing system includes a first input multiplier multiplying a first digital input signal by a first gain value to provide a first scaled signal, a second input multiplier multiplying a second digital input signal by the first gain value to provide a second scaled signal, a combiner combining the first scaled signal and the second scaled signal to provide a combined signal, a soft limiter soft limiting the combined signal by reducing some of the amplitudes of the combined signal to provide a soft limited signal, and an output multiplier multiplying the soft limited signal by a second gain value to provide a mixed output signal, wherein the first gain value is a value that is equal to an inverse value of the second gain value.
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