From the original SynthMaker forum (2004–2014), with its members’ names and dates.
lalo ·
hi guys! is the ramp range 0 to 0.25? ..cause i have to multiply it by 4 to have it filling the entire positive amplitude range...having a wave display at max=4..
if it's not i guess the sine/saw oscillators have a +/- 2 amplitude range 😀 cause with the same wave-display i have only half positive half negative filled when i multiply them by 1....or better said i have to multiply them by 2 to have them fill the whole range....mhh
lalo
malc ·
hi lalo,
I'm pretty sure the ramp should go from 0 to 1 and the sine and sawtooth go from -1 to 1. So something strange is going on here. It seems to work fine for me. Any chance you could post your schematic and I'll have a look.
Thanks.
malc ·
Ok, I just read your other post now. I think the second input to the Wave Display component represents the maximum positive value displayed. So entering 4 would show amplitudes between -4 and 4. This would explain why you had to multiply the ramp by 4.
However, refering back to your other post (Amplitude values in saw wave) that still leaves the peculiarity with the sawtooth. Probably too early in the morning for me and I'm missing something obvious but it looks like the sawtooth is going from -2 to 2 (just about anyway). Maybe Jorge can shed some light on this.
jorge ·
malc wrote: it looks like the sawtooth is going from -2 to 2 (just about anyway).
yeah, that's right. The range of the sawtooth is not correct at the moment but I think -1 to 1 is not the answer either. The current version of the sawtooth just adds sine harmonics with amp range from -1 to 1. The fundamental will be a sine wave -1 to 1 but because of the contribution of the harmonics the final sawtooth has an amplitude higher that 1. To fix the problem is just a question of multiplying the output of the sawtooth by a fixed value, whenever I get to calculate that fixed value I'll fix it.
lalo ·
jorge wrote: malc wrote: it looks like the sawtooth is going from -2 to 2 (just about anyway).
yeah, that's right. The range of the sawtooth is not correct at the moment but I think -1 to 1 is not the answer either. The current version of the sawtooth just adds sine harmonics with amp range from -1 to 1. The fundamental will be a sine wave -1 to 1 but because of the contribution of the harmonics the final sawtooth has an amplitude higher that 1. To fix the problem is just a question of multiplying the output of the sawtooth by a fixed value, whenever I get to calculate that fixed value I'll fix it.
great jorge...lightening as always 😉 lalo
stefan ·
jorge wrote: malc wrote: it looks like the sawtooth is going from -2 to 2 (just about anyway).
yeah, that's right. The range of the sawtooth is not correct at the moment but I think -1 to 1 is not the answer either. The current version of the sawtooth just adds sine harmonics with amp range from -1 to 1. The fundamental will be a sine wave -1 to 1 but because of the contribution of the harmonics the final sawtooth has an amplitude higher that 1. To fix the problem is just a question of multiplying the output of the sawtooth by a fixed value, whenever I get to calculate that fixed value I'll fix it.
Uhm, I think the result should be way lower than -1..1. A bit more than 3dB lower.
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