BD3811K1_1 datasheet(11/18 Pages) ROHM

부품명	BD3811K1

상세설명	5.1ch Sound Processor

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제조업체	ROHM [Rohm]

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11 / 18 page

Technical Note

11/17

www.rohm.com

2010.06 - Rev.A

BD3811K1,BD3818KS

●

Setting constants for tone control filters

1. Treble filter

fc=1/2π(R2)C (Hz)

G=20log(R1+R2+Zc)/(R2+Zc) (dB)

Zc=1/jωC (Ω)

Fig.4

Standard values of R1, R2 (reference)

Treble Boost Amount

Cut Amount

Resistance (KΩ)

*Typ.

R1

R2

0dB

0

20

2dB

4.1

15.9

4dB

7.3

12.7

6dB

10.3

9.7

8dB

12.3

7.7

10dB

14.0

6.0

12dB

15.4

4.6

14dB

16.5

3.5

*The actual boost cut level may deviate from the standard values in some degree.

Fig.5

G

ｆ

c

G

3dB

G

3dB

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