M61524FP データシートの表示（PDF） - Hitachi -> Renesas Electronics

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M61524FP

2ch ELECTRONIC VOLUME WITH 4 INPUT SELECTOR

Hitachi -> Renesas Electronics 

M61524FP

Vocal Cut

It is the function which attenuate a vocal from the music source.

The vocal is usually located in the center. And it is same amplitude and phase in L and R channel.

So, a vocal inside music is attenuated by doing L-R. But, a low frequency signal be attenuated in this case.

Therefore, a low frequency signal be made to pass with LPF, and it makes up for the shortage of the low frequency

signal .

10u

Lch IN

0.47µ

External parts for vocal cut. (LPF Type)

7

MIC MIX

20k

50k

REF

10u

Rch IN

50k

50k

REF

27k

27k

27k

27k

20k

MIC IN

+6dB

20k

20k

20k

20k

20k

REF

(Note), The output of the vocal cut is mono.

20k

MIC MIX

When resonance circuit is connected to pin 7, It can get the character which makes only a vocal attenuation.

Example :External resonance circui t

0.15µ

0.039µ

22k

100

Frequency response of vocal cut

* This frequency response is a simulation result.

Resonance circuit

TYPE

4.7k

7

LPF TYPE

Rev.1.0, Sep.19.2003, page 18 of 20

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