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M62498

DIGITAL SOUND CONTROLLER WITH SURROUND

MITSUBISHI ELECTRIC  

MITSUBISHI SOUND PROCESSORS

M62498FP

DIGITAL SOUND CONTROLLER WITH SURROUND

(4) Equivalent circuit of Vocal cut

This IC incorporates the circuit which realizes a vocal cut function simply by lowering gain in

the area using the mid circuit of the tone control.

But be careful because vocal cut ON setting,the mid of the tone control can not used.

VOCAL CUT SW

VOCAL CUT ON setting :SW OFF

IN

VOCAL CUT OFF setting:SW ON

OUT

R2+R3=200KΩ

R2

R3

1

f0 =

(Hz)

2π R1(R2+R3)C1C2

C2

2

Gv = 20log RR2+1R3+2 (dB)

C1

R1

At vocal cut ON setting, the frequency characteristic can be set like the following,by the

resistance of putting outside:The fixed number of R1 and C1,C2.

<CHARACTERISTIC CURVE>

1.Vocal cut characteristic f0=550Hz

edition

R=3KΩ,C1=C2=0.012µF

Gv=-30dB

8dB setting

Tone mid corrugation at

Vocal cut OFF setting

2.Tone control mid

characteristic edition f0=530Hz

R=10KΩ,C1=C2=6800pF Gv=-20dB

8dB setting

Tone mid corrugation at

Vocal cut OFF setting

+10dB

0dB

-10dB

+10dB

0dB

-10dB

-20dB

-30dB

Tone mid corrugation at

Vocal cut ON setting

-20dB

-30dB

550

100

1k

10k

Frequency f(Hz)

Tone mid corrugation at

Vocal cut ON setting

550

100

1k

10k

Frequency f(Hz)

MITSUBISHI

ELECTRIC

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