audio signal processor.
* REC equalizer is very small number of external parts and have 4 types of frequency characteristics built-in.
* 2 types of input for PB, 1 type of input for REC..
HA12209F is silicon monolithic bipolar IC providing Dolby noise reduction system*, music sensor system, REC equalizer system and each electronic control switch in one chip.
Functions
* Dolby B-NR
* REC equalizer
* Music sensor × 2 channe.
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