What Is Dolby B-type Noise Reduction System?

- Jun 21, 2018-

Dolby B-type noise reduction system uses the masking effect of the human ear and the third phenomenon of high-frequency noise to design a compression-type noise reduction system. The recording and playback circuit is used in conjunction with the recording and playback characteristics, so Audio tapes handled by this system should not be played back by tape recorders without a Dolby noise reduction system, otherwise the sound quality will be affected. However, since Dolby B type is only subjected to companding in the high frequency band, if it is used without Dolby B When the recording system of the system is playing audio, the tone control can be used to slightly attenuate the high frequency, and can also achieve a sound effect close to the original sound.



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