Invention Grant
- Patent Title: Intelligent dynamics processing
- Patent Title (中): 智能动力学处理
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Application No.: US14495819Application Date: 2014-09-24
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Publication No.: US09462381B2Publication Date: 2016-10-04
- Inventor: Arvindh Krishnaswamy , Joseph M. Williams
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Blakely, Sokoloff, Taylor & Zafman LLP
- Main IPC: H03G3/00
- IPC: H03G3/00 ; H04R3/00

Abstract:
A multi-band audio compressor that may provide not only better and brighter sound, but also speaker protection. The multi-band audio compressor breaks an input audio signal into different frequency bands. For each band signal, a volume re-mapper translates a user preference volume level to a converted volume level based on a programmable volume curve for the band signal. For each frequency band, the band signal is processed by a gain stage and a compressor. Each gain stage applies a signal gain to the band signal based on the converted volume level. Each compressor compresses the output of the gain stage. After compression, the different frequency band signals are re-combined and the combined audio signal may then be passed to a power amplifier that is driving a speaker. Other embodiments are also described and claimed.
Public/Granted literature
- US20150350783A1 INTELLIGENT DYNAMICS PROCESSING Public/Granted day:2015-12-03
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