Invention Grant
US08626516B2 Method and system for dynamic range control in an audio processing system
有权
音频处理系统中动态范围控制的方法和系统
- Patent Title: Method and system for dynamic range control in an audio processing system
- Patent Title (中): 音频处理系统中动态范围控制的方法和系统
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Application No.: US12367854Application Date: 2009-02-09
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Publication No.: US08626516B2Publication Date: 2014-01-07
- Inventor: Hanks Zeng , Prakash Khanduri , Ken Kasiske , Ronish Patel , Nelson Sollenberger
- Applicant: Hanks Zeng , Prakash Khanduri , Ken Kasiske , Ronish Patel , Nelson Sollenberger
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Sterne, Kessler, Goldstein & Fox, P.L.L.C.
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L21/00

Abstract:
Methods and systems for dynamic range control in an audio processing system are disclosed and may include controlling a dynamic range of an audio signal by expanding the dynamic range utilizing a dynamic expander, and dividing the audio signal into a plurality of frequency bands. Each of the bands may be individually compressed utilizing a multi-band compressor. A sum of the individually compressed frequency bands may be compressed utilizing a full-band compressor. The audio signal may be filtered utilizing a pre-emphasis filter, such as an infinite impulse response filter and may be divided into frequency bands utilizing one or more finite impulse response filters and/or delay modules. The dynamic expander may include adaptive thresholds and an envelope detector. Each of the frequency bands may be compressed utilizing syllabic compression in the multi-band compressor. The compressed sum of compressed plurality of bands may be processed utilizing an audio CODEC.
Public/Granted literature
- US20100204996A1 METHOD AND SYSTEM FOR DYNAMIC RANGE CONTROL IN AN AUDIO PROCESSING SYSTEM Public/Granted day:2010-08-12
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