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參數(shù)資料
| 型號： | BA7726 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | Analog compander with vocal fader for KARAOKE |
| 中文描述： | 模擬擴(kuò)展器與卡拉OK演唱推子 |
| 文件頁數(shù)： | 8/11頁 |
| 文件大小： | 148K |
| 代理商： | BA7726 |
8
Multimedia ICs
BA7726AS / BA7726AFS
Circuit operation
(1) MUTE CTRL (pin 4)
Controls line muting.
2) L / ST / R CTRL (pin 32)
Controls LINE OUT output in the NORMAL mode.
(2) OUTPUT CTRL (pins 3, 31, 32)
LINE OUT output is controlled with pins 3, 31 and 32.
(Microphone mixing is controlled with pin 11.)
1) NO / VC CTRL (pin 31)
Used to select the NORMAL and VOCAL CUT modes.
L
H
MUTE
MUTE
V
MUTE
(4pin)
L
H
NORMAL
NORMAL
VOCAL CUT : Used to erase or attenuate vocals in
multiplexed karaoke recordings and
normal stereo music recordings.
Controlled by pin3.
: Normal output mode. Controlled by pin 32.
VOCAL CUT
V
NOVC
(31pin)
V
LSTR
(32pin)
L
M (OPEN)
H
LEFT
STEREO
RIGHT
RIGHT
: LINE IN R input is output to LINE OUT L / R.
STEREO : LINE IN L / R input is output to LINE OUT L / R without modification
LEFT
: LINE IN L input is output to LINE OUT L / R.
3) L / VF / R CTRL (pin 3)
Controls LINE OUT output in the VOCAL CUT mode.
RIGHT
: For recordings in which the right channel is karaoke
and the left channel is for vocals (with karaoke).
When Vnovc = L, V
LVFR
= DON 'T CARE
When Vnovc = H, V
LSTR
= DON 'T CARE
LEFT
: For recordings in which the left channel is karaoke
and the right channel is for vocals (with karaoke).
V
LVFR
(3pin)
L
M (OPEN)
H
LEFT
RIGHT
VOCAL FADER : Attenuates the vocals from normal stereo recordings.
VOCAL FADER
(3) ECHO LEVEL CTRL and MIC ON / OFF SW (pin 11)
Between Vcc and 0.2
×
Vcc: Controls echo signal
mixing ratio
Between Vcc and GND : Turns microphone input
sound (pin 26) to LINE OUT on and off
V
CC
~ 0.2
×
V
CC
0.1
×
V
CC
~ GND
V
ECHO
(11pin)
MIC ON and ECHO LEVEL CTRL
MIC OFF
– 1000
– 50
0
0.5
1.0
V
ECHO
(11pin) P.P ratio : V
ECHO
/ V
CC
MIC AMP IN ~ LINE OUT
(V
IN
= – 38dBV, f = 1kHz)
DLY BF IN ~ LINE OUT
(V
IN
= – 4dBV, f = 1kHz)
L
T
(
Fig. 2 LINE OUTattenuation ratio vs. Vecho (11pin)
partial pressure ratio
These figures are for standard samples and
are not guaranteed standards.
(4) LOOP GAIN CTRL (pin 12)
Adjusts the loop gain (pins 17 and 18).
0
0
0.5
1.0
V
CC
= 9.0V
– 50
– 25
V
LOOP
(12pin) P.P ratio : V
ECHO
/ V
CC
DLY BF IN
~
CMP BF OUT
(V
IN
= – 4dBV, f = 1kHz)
C
T
(
Fig. 3 CMP BF OUT attenuation ratio vs. Vloop
(pin 12) partial pressure ratio
These figures are for standard samples and
are not guaranteed standards.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BA7726AFS | 制造商:ROHM 制造商全稱:Rohm 功能描述:Analog compander with vocal fader for KARAOKE |
| BA7726AS | 制造商:ROHM 制造商全稱:Rohm 功能描述:Analog compander with vocal fader for KARAOKE |
| BA7726AS/AFS | 制造商:ROHM 制造商全稱:Rohm 功能描述:Multimedia LSIs |
| BA7730S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| BA7731S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
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