M61510AFP Ver la hoja de datos (PDF) - Renesas Electronics

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Fabricante

M61510AFP

Sound Controller for Quality/Sound Field Control, with Built-in Surround Sound

Renesas Electronics 

M61510AFP

(4) Vocal cut equivalent circuit diagram

This IC incorporates a circuit which uses a tone control midrange circuit to lower the midrange gain, to easily realize a

vocal cut function.

However, when the vocal cut function is on, the tone control midrange cannot be used.

Vocal cut switch

Vocal cut switch

When vocal cut is on: switch off

IN

When vocal cut is off: switch on

OUT

R2+R3=200kΩ

R2

R3

1

f0 =

(Hz)

2 π R1(R2+R3)C1C2

C2

C1

2

Gv = 20log

RR2+1R3+2

(dB)

R1

External resistances: The frequency characteristics when vocal cut is on

can be set as shown below through the constants R1, C1, and C2.

<Characteristic curves>

1. Emphasis on vocal cut characteristic f0=550Hz

R=3kΩ C1=C2=0.012µF

Gv=-30dB

2. Emphasis on tone control mid characteristic

f0=530Hz

R=10kΩ, C1=C2=6800pF Gv=-20dB

8dB setting

+10dB

Tone midrange waveform

when vocal cut is off

+10dB

8dB setting

Tone midrange waveform

when vocal cut is off

0dB

0dB

-10dB

-10dB

-20dB

-30dB

Vocal cut waveform

when vocal cut is on

-20dB

-30dB

550

100

1k

10k

Frequency f (Hz)

Vocal cut waveform

when vocal cut is on

550

100

1k

10k

Frequency f (Hz)

Rev.1.00, Aug.07.2003, page 15 of 22

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