參數(shù)資料
型號(hào)： M61508FP
廠商： Mitsubishi Electric Corporation
英文描述： THE ELECTRIC VOLUME of BUILD-IN NON FADER VOLUME with TONE CONTROL
中文描述： 在建設(shè)電子體積在非推子與音調(diào)控制音量
文件頁(yè)數(shù)： 21/22頁(yè)
文件大?。?/td> 3151K
代理商： M61508FP
D-61508-98-C
ELECTRIC
MITSUBISHI
( /22)
21
THE ELECTRIC VOLUME of BUILD-IN NON FADER VOLUME with TONE CONTROL
MITSUBISHI SOUND PROCESSOR ICs
M61508FP
LOUDNESS
FILTER
(Gv=0dB)
2 LOUDNESS GAIN SETTING
Lower Figure is Structure of Loudness Circuit.
10
VOLUME 1
LOUDNESS VOLUME
R
R
R
R
VOUT
VIN
V1
V2
Output Volutage (VOUT) of Setting Structure of Upper Figure
It is noted as Volume1Output Volutage = V1, Loudness Filter Output Voltage = V2,
VOUT and Gv (Boost quantity) is given at the lower formula
Gv = 20 log
ex.) VIN = 1Vrms/60Hz,Volume1= - 30dB,
Output Volutage and Boost Quantity of 60Hz of Loudness Volume = -20dB setting
From : Volume1,Loudness Volume attenuation quantity
Become : V1 = 31.6mVrms
V2 = 100mVrms
If the subsitudes the equation for the upper formula,
the following equation is given :
(V1 + V2)
VIN
- (Volume 1 attenuation quantity) (dB)
VOUT = V1 + V2 (Vrms)
VOUT = 31.6m + 100m
In the item,the Loudness Gain Setting example is shown, when Volume1 fixation and
doing the Loudness Volume variably. Please refer to Plan.
Gv = 20 log
(31.6m + 100m)
1
- (-30dB)
= 12.4dB is obtained.
=131.6mVrms
Frequency (Hz)
Gv
Volume 1= -30dB
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