ymf795 Yamatake Corporation, ymf795 Datasheet - Page 16

• Manufacturer Part Number: ymf795
• Description: Apl-2 Automobile Sound Player-2
• Manufacturer: Yamatake Corporation

SL3 - SL0 : Sustain level setting
TL5 - TL0 : Total level setting
SUS : Sustain On/OFF setting
WAV : Waveform selection
FL2 - FL0 : Feed-back setting
Be sure to set “0” to the operator of the carrier side. This is effective function for generating the strings timbres.
The Sustain Level, in the case of decaying sound, is the transition level from the Decay Rate to the Release Rate, and
in the case of sustained sound, is a level held.
This function is used to set the envelope level.
“0” : OFF
“1” : ON
The modulator and carrier can generate a sine wave; however, can generate a half-wave rectified waveform by setting
this bit. Setting this bit allows creation using wider timbres.
“0” : Sine wave
“1” : Half-wave rectified waveform of a sine wave.
This function is available only for the operator of Modulator. These bits specify the feedback modulation depth.
Modulation rate
The Release Rate changes to “6” (2.29s) when the sound length comes to the end.
AR[3:0]
DR[3:0]
RR[3:0]
Weighted bit (dB)
WAV=0
FL [2:0]
Weighted bit (dB)
Dh
Ch
Bh
Ah
Fh
Eh
9h
8h
7h
6h
5h
4h
3h
2h
1h
0h
TL
SL
-48 to 0dB (ms)
0
0
Attack rate
19040.84
1190.05
2380.10
4760.21
9520.42
148.76
297.51
595.03
18.59
37.19
74.38
4.65
9.30
∞
∞
0
TL5
SL3
-24
-24
π/16
1
WAV=1
TL4
-12
π/ 8
-16-
SL2
-12
2
TL3
0 to -48dB (ms)
-6
π/ 4
Release Rate
Decay Rate,
3
SL1
18308.50
36617.00
1144.25
2288.56
4577.12
9154.25
-6
143.04
286.07
572.14
17.88
35.76
71.52
2.23
8.94
∞
∞
TL2
-3
π/ 2
4
SL0
-3
TL1
-1.5
5
π
-0.75
YMF795
TL0
2π
6
4π
7