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The Bad Producer
Joined: Mar 08, 2009 Posts: 282 Location: The Manhole
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Posted: Fri Mar 22, 2013 6:03 am Post subject:
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Hi Luka,
Been away for a few days - looks like it's just us! I'll have a look at the thing today, go through all my print outs! _________________ http://loudestwarning.tumblr.com/ |
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Luka
Joined: Jun 29, 2007 Posts: 1003 Location: Melb.
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Posted: Wed Mar 27, 2013 3:30 am Post subject:
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yeah seems so charlie
im interested whether there will be a silence bridge pot as well as the level pot for each channel.
can anyone who has a complete build determine this?
in jurgen's example panel he had a addition / bridging pot and a channel level pot.
do you think the addition / bridging pot was the pause bus / silence bridge? _________________ problemchild
melbourne australia
http://cycleofproblems.blogspot.com/
http://www.last.fm/user/prblmchild |
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Luka
Joined: Jun 29, 2007 Posts: 1003 Location: Melb.
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Omega
Joined: Oct 11, 2010 Posts: 16 Location: Böblingen
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Posted: Thu Mar 28, 2013 11:15 pm Post subject:
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Hi everyone. I am new here and I have a question on the power supply, about Q2701 and R2713. What do I have to adjust here ? Any idea is welcome.
Thank you in advance !
Best regards
Bernhard |
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Luka
Joined: Jun 29, 2007 Posts: 1003 Location: Melb.
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Omega
Joined: Oct 11, 2010 Posts: 16 Location: Böblingen
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Posted: Fri Mar 29, 2013 12:50 am Post subject:
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Whow ! Thank you for the quick reply !!
Bernhard _________________ Cheers
Bernhard |
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Luka
Joined: Jun 29, 2007 Posts: 1003 Location: Melb.
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Omega
Joined: Oct 11, 2010 Posts: 16 Location: Böblingen
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Posted: Tue Apr 16, 2013 11:12 pm Post subject:
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Good morning everybody. Some more "silly" questions regarding the speech amp.
- which value are you using for the SP_LEVEL Pot ?
- looking at the schematics of the speech_input_amp I am asking me what's the difference between the Speech socket and the SPEECH_AMP ? Looking at other schematics I see that the SPEECH_AMP ist used. So what will you do with the Speech socket (that's SPEECH_AMP plus R2130)
- Switch to bypass Vactrol LED: So only the LED is bypassed. Is that correct ? The limiter function itself is not inhibited
Any ideas are welcome.
Thanks a lot in advance _________________ Cheers
Bernhard |
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Luka
Joined: Jun 29, 2007 Posts: 1003 Location: Melb.
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Posted: Thu May 02, 2013 6:45 pm Post subject:
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just got back from holidays
the speech amp routes the signal to the silence bridging circuit, slew / freeze circuit, attack detector and v/uv. the speech connector is the bus sending speech to the speech analysis filters in each channel.
im not exactly sure how the limiter circuit works but my assumption is the switch turns the limiting on and off. _________________ problemchild
melbourne australia
http://cycleofproblems.blogspot.com/
http://www.last.fm/user/prblmchild |
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Luka
Joined: Jun 29, 2007 Posts: 1003 Location: Melb.
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Useemu
Joined: Jun 06, 2009 Posts: 42 Location: Germany
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Posted: Sat Nov 23, 2013 7:45 am Post subject:
R0307 should be 1k5 |
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Just find a wrong R value on channel_3.as schematic while simulating. R0307 must be at 1k5 instead of 1k8. Otherwise you are about 3dB on the low side with channel 3. |
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Luka
Joined: Jun 29, 2007 Posts: 1003 Location: Melb.
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Posted: Fri Jan 03, 2014 3:01 pm Post subject:
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ok well im testing modules now
psu ok - i used the onboard psu
synth in seems okay but i guess ill need to verify once i have more modules and channels tested ( i used ssm2019 btw and not seeing any instability )
now im up to v/uv and i have a question
should the voiced led stay on with no signal? _________________ problemchild
melbourne australia
http://cycleofproblems.blogspot.com/
http://www.last.fm/user/prblmchild |
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Luka
Joined: Jun 29, 2007 Posts: 1003 Location: Melb.
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Posted: Fri Jan 03, 2014 3:21 pm Post subject:
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can someone let me know if this is a correct interpretation of the v/uv circuit
speech amp is sent to preamp (U2301)
output of speech amp is routed to 2 filters (high / low) with a pan pot to detect muffled and high pitch noise sounds
each filter passes through a precision rectifier
outputs of rectified filter channels are sent to a comparator which triggers the unvoiced state
comparator output routed to another comparator (determining the voiced state as the invert of the unvoiced) as well as feeding the hysteresis circuit (j2301) _________________ problemchild
melbourne australia
http://cycleofproblems.blogspot.com/
http://www.last.fm/user/prblmchild |
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Luka
Joined: Jun 29, 2007 Posts: 1003 Location: Melb.
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Posted: Fri Jan 03, 2014 6:22 pm Post subject:
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zthee wrote: | So I did the changes suggested by Sound. The things I had to change in the changes was the noise level. Cause even with the noise level trimmer turned down it was still 4x higher than the replacement signal. So I reverted back to the 18K / 100K setting, which brought it down to a better level..
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fyi my noise level is really high as well when using the 10k / 1k8 _________________ problemchild
melbourne australia
http://cycleofproblems.blogspot.com/
http://www.last.fm/user/prblmchild |
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Luka
Joined: Jun 29, 2007 Posts: 1003 Location: Melb.
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carlhudson83
Joined: Nov 29, 2012 Posts: 8 Location: London
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Posted: Mon Sep 17, 2018 8:58 pm Post subject:
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Hey guys,
Hope nobody minds me posting on an old thread..
I've been speaking with Ralf over at RandomSouce regarding the Vocoder. He's out of stock on the vocoder PCBs, so I'm attempting a redesign of the circuit, replacing the common components with SMD equivalents, so that parts of the circuit can be factory soldered, making it more accessible to DIYers (myself included!)
At the moment, I'm a little stumped by the schematic - the LM13600 OTA of the filter VCAs have a connection to -v1.. I've circled it here:
https://imgur.com/a/gltOsMm
Can someone tell me which physical pin on a LM13600 this is? Or is it a schematic error?
Thanks!
Carl |
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frenchyinmunich
Joined: Jun 23, 2009 Posts: 113 Location: Germany
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Posted: Fri Feb 04, 2022 1:11 pm Post subject:
Juergen Haible Vokoder |
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Hallo,
it sounds really niche!
What is the status now?
Best regards,
Francois
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