[sdiy] Homemade synth clone
tom at electricdruid.net
Fri Feb 15 18:14:01 CET 2019
Pete is dead right. NOISE 1B runs on 5V, so produces a analog noise level of 2-3V or so. MN5837 ran on 0V and -15V, so produced roughly three times the output. But fixing this usually involves just a simple gain resistor change.
Synth & Stompbox DIY
> On 15 Feb 2019, at 15:15, Pete Hartman <pete.hartman at gmail.com> wrote:
> On Fri, Feb 15, 2019 at 8:07 AM Luís Marka <luis.marka at terra.com.br> wrote:
> Also, the noise generator MM5837 seems to be made
> of Unobtanium. Will use an Electrodruid NOISE 1B chip instead!
> It works, but you should note that the levels are (probably) different so it is likely you'll need to make adjustments in the section that processes the noise.
> On the Roman F Source of Uncertainty, for example, had to bump a couple resistors to increase the gain and get the noise range back to what it should be.
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