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 Forum index » DIY Hardware and Software
Ds7 core "synth" (i guess)
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bubzy



Joined: Oct 27, 2010
Posts: 560
Location: United Kingdom
Audio files: 63

PostPosted: Sun Nov 21, 2010 11:47 am    Post subject: Ds7 core "synth" (i guess) Reply with quote  Mark this post and the followings unread

ok after several attempts at making a ds7, i failed bigtime. sooooo, i started touching wires around and got some interesting sounds (very unprofessional i know :p ) but anyway, here it is


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richardc64



Joined: Jun 01, 2006
Posts: 623
Location: NYC
Audio files: 26

PostPosted: Sun Nov 21, 2010 3:03 pm    Post subject: Reply with quote  Mark this post and the followings unread

Doesn't sound like "big time" failure to me! Sounds pretty good and pretty much like it ought to, minus triggering.

Describe just how you "failed" and surely someone here will try to help.

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knives and bearskins." -- Spock to Edith Keeler
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bubzy



Joined: Oct 27, 2010
Posts: 560
Location: United Kingdom
Audio files: 63

PostPosted: Sun Nov 21, 2010 3:16 pm    Post subject: Reply with quote  Mark this post and the followings unread

it was actually the triggering that was causing the problem, it never really worked. just had a weird sort of effect, the more i turned the "delay" knob the longer it took before any sound came out. checked the schematic loads of times, i must have missed something. i still have another one of these boards and it would be nice to actually get this thing working. so any ideas will be appreciated.
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richardc64



Joined: Jun 01, 2006
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Location: NYC
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PostPosted: Sun Nov 28, 2010 7:51 am    Post subject: Reply with quote  Mark this post and the followings unread

Bump, for two reasons.

1) I'm having a similar problem in a similar circuit: When triggered, the envelope start is delayed instead of the expected fast Attack.

2) I can't believe I mis-represented to bubzy the level of helpfulness usually available here.

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Dan Lavin



Joined: Nov 09, 2006
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Location: Spring Lake, Mi, USA
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PostPosted: Sun Nov 28, 2010 8:26 pm    Post subject: Reply with quote  Mark this post and the followings unread

At the risk of saving face for Richard, may I suggest hanging a large value resistor (1-5.6Meg) between the input jack and ground? On all my drum modules with a cap in to the circuit, I have to do this to get it to trigger properly.
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richardc64



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PostPosted: Mon Nov 29, 2010 4:29 am    Post subject: Reply with quote  Mark this post and the followings unread

Well, I'll be--!

That was simple. Thanks, Dan.

Now I need to figure out why there's no Decay, despite increasing the cap or the Decay pot. scratch

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