ANR analysis side-chain data support

Details ANR analysis side-chain data support ANR analysis side-chain data support

2009-04-28

2011-12-27

Enad, Elvin G (Department: 2832)

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Adjacent ear

Reexamination Certificate

active

08085946

ABSTRACT:
An ANR circuit, possibly of a personal ANR device and possibly within an ADC of the ANR circuit, feedback reference data, feedforward reference data and/or pass-through audio data is provided to a secondary downsampling (and/or decimating) filter and/or is provided to a calculating block (e.g., RMS or absolute calculation block) to derive side-chain data to be output by the ANR circuit to a processing device coupled to the ANR circuit to employ the side-chain data in an analysis related to the provision of feedback-based ANR, feedforward-based ANR and/or pass-through audio by the ANR circuit.

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