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参数资料
| 型号： | YMU757 |
| 元件分类： | 音频合成 |
| 英文描述： | TONE/MUSIC SYNTHESIZER, PDSO20 |
| 封装： | TSSOP-20 |
| 文件页数： | 4/42页 |
| 文件大小： | 701K |
| 代理商： | YMU757 |
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YMU757
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12-
Precaution
When KEY isturned on again underthe condition thata release isn'
tfinished com pletely,a tone may
change.(Itislimited when envelope wave shape issustained sound.)
Thishappensbecause envelope wave shape ofthe careerside ofFM sound source and m odulator
side are shifted.
The movementofenvelope isexplained.
Asforthe condition thatitstopscom pletely,itmovesto attack rate atthe sam e time with KEYON.
Ifthe lastpronunciation iscondition thatin release and isn’tstopped com pletely,the establishm entofa
release ismade forcibly early (8.94m s).And itmovesto attack rate from the condition thatitstops.(A
in figure)
An exam ple isgiven to it,and the cause thata tone changesisexplained.
Itthinksthatthere isa tone which only release time isdifferentfrom with the careerand m odulator.
Though envelope ofthe solid line changesto attack rate soon atthe time ofthe second KEYON.
Butcan'
tmove to attack rate soon,because sound doesn'
tstop com pletely,envelope ofthe dotted line.
Itmoves to attack rate afterbe speed up release time and itbecom es the condition thatrelease time is
stopscom pletely.
Both envelope are shifted by thismovement.
And the sym ptom thata tone changesin the period when itissurrounded by a circle occurs.
Itasksforthe follow ing consideration to avoid thissym ptom .
-Itispronounced underthe condition thata release stopscom pletely.
-The release time ofthe tone isshortened with the career,m odulatorside aswell.
Ifsustain levelsetting ofthe careerside and m odulatorside are sam e value,the method ofavoidance
isasfollow s.
-The release time ofcareerside and m odulatorside ismade the sam e length.
Rest data
Default: 0000h
Index
b15
b14
B13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
$00h
0
1
0
CH1
CH0
VCHE
TI3
TI2
TI1
TI0
VCH2
VCH1
VCH0
7.#
7,#
7.#
$#WRQH#FKDQJHV1#
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| YMU759-Q | TONE/MUSIC SYNTHESIZER, PQCC32 |
| YMU759B-QZ | TONE/MUSIC SYNTHESIZER, PQCC32 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| YMU757B | 制造商:YAMAHA 制造商全称:YAMAHA CORPORATION 功能描述:MA-1C |
| YMU759 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SYNTHESIS LSI FOR PORTABLE TELEPHONE |
| YMU759B-Q | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC |
| YMU762 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Mobile Audio 3 |
| YMW025 | 制造商:YEONHO 制造商全称:YEONHO ELECTRONICS 功能描述:2.50mm PITCH CONNECTOR |
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