Does anyone have or has anyone attempted to determine the absolute values of each of the parameters on the R3? I.e. decibels, hertz, seconds, etc.
For example, the ADSR values are all input as relative values from 0-127. These should correspond to real values of time (except for sustain obviously) from 0 seconds to some number of seconds (a value I am not certain of which is why I'm asking.)
In another post I mentioned attempting to recreate sound "recipes" from "Welsh's Synthesizer Cookbook." All of those sounds are given with mostly absolute values (Attack 0.03s or Cutoff 40hz at 24db) which I currently have to usually guess at.
There's a long section at the end of the book used with the accompanying CD on calibration, i.e. determining the values of settings. I'm contemplating going through all of this, but if someone already has those values, I'd rather enjoy the fruits of someone else's labors!
If these values are available and someone could share them with me, I'd be very grateful.
Thanks!
R3 Value Conversions
Moderators: Sharp, X-Trade, Pepperpotty, karmathanever
Okay, I'll answer some of this myself since it seems there might be a few others interested.
I went through the Calibration section at the end of Welsh's Synthesizer Cookbook. Basically, he has provided a series of audio files on a CD which you can try to use to match your settings with his and hopefully figure out the actual values of your machine. I tried it on oscillator mix (in db), filter (in hz) and ADR (in sec).
Unfortunately, this is not an exact science. And I don't think my results were entirely consistent. Especially with the filter cutoff since it assumes the audio file and my synthesizer will create a similar tone at the top end of the frequency (20,000 Hz). And until about 1-2000 Hz, I couldn't hear much difference in the tones and the R3 was much brighter until there. So this is only my perception of the results, and not entirely accurate ones.
Measuring ADR was much easier and probably much more closer to accurate since all I had to do was time the value. I measured the attack and set D&R to 0 so that I got a rising volume and then sudden silence. By measuring from the moment I hit the key to silence, I could get a pretty good idea of the time.
I'll put my results in the next post.
I went through the Calibration section at the end of Welsh's Synthesizer Cookbook. Basically, he has provided a series of audio files on a CD which you can try to use to match your settings with his and hopefully figure out the actual values of your machine. I tried it on oscillator mix (in db), filter (in hz) and ADR (in sec).
Unfortunately, this is not an exact science. And I don't think my results were entirely consistent. Especially with the filter cutoff since it assumes the audio file and my synthesizer will create a similar tone at the top end of the frequency (20,000 Hz). And until about 1-2000 Hz, I couldn't hear much difference in the tones and the R3 was much brighter until there. So this is only my perception of the results, and not entirely accurate ones.
Measuring ADR was much easier and probably much more closer to accurate since all I had to do was time the value. I measured the attack and set D&R to 0 so that I got a rising volume and then sudden silence. By measuring from the moment I hit the key to silence, I could get a pretty good idea of the time.
I'll put my results in the next post.
Ocsillator Mixer Volume in db
(This is relative volume, so it assumes 0db is the top volume, and we step down in volume from there.)
0 db = 127
-5 db = 120
-10 db = 100
-15 db = 90
-20 db = 80
-25 db = 60
-30 db = 45
-35 db = 35
These are just approximates. There's really about a 10-12 point range for each of these volumes so if you get in the general area, it should be close enough.
(This is relative volume, so it assumes 0db is the top volume, and we step down in volume from there.)
0 db = 127
-5 db = 120
-10 db = 100
-15 db = 90
-20 db = 80
-25 db = 60
-30 db = 45
-35 db = 35
These are just approximates. There's really about a 10-12 point range for each of these volumes so if you get in the general area, it should be close enough.
Filter Cutoff in db
These were measured against the 24db cutoff. As I said above, my R3 sounded brighter than the sample sounds I was measuring against, so I don't know how accurate these are. It also explains the huge jump in values, because I couldn't hear much difference until around 2,000 Hz.
20,000 Hz = 127
1,000 Hz = 60
500 Hz = 50
200 Hz = 37
100 Hz = 15
75 Hz = 10
These were measured against the 24db cutoff. As I said above, my R3 sounded brighter than the sample sounds I was measuring against, so I don't know how accurate these are. It also explains the huge jump in values, because I couldn't hear much difference until around 2,000 Hz.
20,000 Hz = 127
1,000 Hz = 60
500 Hz = 50
200 Hz = 37
100 Hz = 15
75 Hz = 10
ADR values.
This is the time in seconds of the Attack, Decay, and Release values. I measured all these against attack, but then tried a few samples with Decay and Release and they seemed to use the same values.
127 = 30s
124 = 19.5s
120 = 10.2s
118 = 8.5s
115 = 6.5s
110 = 3.8s
100 = 2.4s
95 = 1.9s
63 = .8s
50 = .4s
35 = .22s
24 = .15s
20 = .085s
15 = .07s
10 = .06s
5 = .02s
This is the time in seconds of the Attack, Decay, and Release values. I measured all these against attack, but then tried a few samples with Decay and Release and they seemed to use the same values.
127 = 30s
124 = 19.5s
120 = 10.2s
118 = 8.5s
115 = 6.5s
110 = 3.8s
100 = 2.4s
95 = 1.9s
63 = .8s
50 = .4s
35 = .22s
24 = .15s
20 = .085s
15 = .07s
10 = .06s
5 = .02s