HA12227F

HA12226F/HA12227F Audio Signal Processor for Cassette Deck (Dolby B-type NR with Recording System) ADE-207-270E (Z) 6th Edition Dec. 2000 Description The HA12226F/HA12227F are silicon monolithic bipolar IC providing Dolby noise reduction system* , music sensor system, REC equalizer system and each electronic control switch in one chip. Note: 1. Dolby is a trademark of Dolby Laboratories Licensing Corporation. A license from Dolby Laboratories Licensing Corporation is required for the use of this IC. The HA12227F is not built-in Dolby B-NR. 1 Functions Dolby B-NR* Music sensor Pass amp. 2 × 2 channel × 2 channel × 1 channel × 2 channel REC equalizer Each electronic control switch to change REC equalizer, bias, etc. Note: 2. The HA12227F is not built-in Dolby B-NR. Features 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. 70µ - PB equalizer changing system built-in. Dolby NR* with dubbing double cassette decks. Unprocessed signal output available from recording out terminals during PB mode. 2 Provide stable music sensor system, available to design music sensing time and level. Controllable from direct micro-computer output. Bias oscillator control switch built-in. NR ON / OFF and REC / PB fully electronic control switching built-in. Normal-speed / high-speed, Normal / Crom and PB equalizer fully electronic control switching built-in. ...