electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Articles  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links  |  Store
Forum with support of Syndicator RSS
 FAQFAQ   CalendarCalendar   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   LinksLinks
 RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  Chat RoomChat Room 
 Forum index » DIY Hardware and Software » YuSynth
VCA on forever
Post new topic   Reply to topic Moderators: Scott Stites
Page 1 of 1 [9 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
isak



Joined: Dec 13, 2009
Posts: 703
Location: Israel
Audio files: 18

PostPosted: Thu Jul 11, 2013 3:26 pm    Post subject: VCA on forever Reply with quote  Mark this post and the followings unread

Hi Yves.

i want the VCA will be always open.
how would i do that?
can i connect 5V direct to the CV in with an ON/OFF switch?

cheers,
Isak E.

_________________
http://www.myspace.com/mgmtrance
Back to top
View user's profile Send private message
Benjamin AM



Joined: Nov 04, 2010
Posts: 68
Location: Boise

PostPosted: Thu Jul 11, 2013 7:18 pm    Post subject: Reply with quote  Mark this post and the followings unread

Turn up the gain knob.
Back to top
View user's profile Send private message
isak



Joined: Dec 13, 2009
Posts: 703
Location: Israel
Audio files: 18

PostPosted: Thu Jul 11, 2013 11:22 pm    Post subject: Reply with quote  Mark this post and the followings unread

Sorry I don't understand...
The gain pot is the master vol of the vca, no?

EDIT:
ok, I gusse not, I looked at the scheme again and see the gain connected to 15V.
I'll just put a toggle switch instead the pot.

Cheers.

_________________
http://www.myspace.com/mgmtrance
Back to top
View user's profile Send private message
isak



Joined: Dec 13, 2009
Posts: 703
Location: Israel
Audio files: 18

PostPosted: Fri Jul 12, 2013 12:43 am    Post subject: Reply with quote  Mark this post and the followings unread

Another Q..

I want a switch that I can move from Env to gate.
What would the right way to do it?
My thought was to connect the gate through 1nF to the cv in just not to get clicks on the start of the note when pressing the keyboards.
Is this the right way to go?

Cheers.

_________________
http://www.myspace.com/mgmtrance
Back to top
View user's profile Send private message
Benjamin AM



Joined: Nov 04, 2010
Posts: 68
Location: Boise

PostPosted: Sun Jul 14, 2013 5:37 pm    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
My thought was to connect the gate through 1nF to the cv in just not to get clicks on the start of the note when pressing the keyboards.

Isak, I believe that this will not work for what I understand that you want to accomplish.
Here is my suggestion for you. I am assuming that you plan on using the Yusynth VCA and that your gate output is 10V. I'll let you figure out the switching part, it is easy. Essentially you will have to run an envelope generator to one input of the VCA and a gate to the second input. The gate would be interrupted by the circuit that I've attached. This should add a small lag and release to the gate that will reduced the clicking effect that you wish to get rid of. This circuit will cut the gate level in half. To compensate, adjust the input resistor(R20 originally 68k) in the VCA circuit to something like 33k or 36k. Hope that helps.


Gate VCA.bmp
 Description:

Download
 Filename:  Gate VCA.bmp
 Filesize:  21.72 KB
 Downloaded:  90 Time(s)

Back to top
View user's profile Send private message
isak



Joined: Dec 13, 2009
Posts: 703
Location: Israel
Audio files: 18

PostPosted: Sun Jul 14, 2013 9:05 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thank you for yor replying on this matter.
Actually my gate is 5V, it's from acx midi to cv lite http://www.acxsynth.com/midi2cvlite/midi2cvlitefr.htm
Any modification cause of the 5V?
if I understand this correctlly it will cut the 5V gate to half, what means it will be 2.5V, that I'm almost sure it's not enough to run through the cv in.

Right?

_________________
http://www.myspace.com/mgmtrance
Back to top
View user's profile Send private message
isak



Joined: Dec 13, 2009
Posts: 703
Location: Israel
Audio files: 18

PostPosted: Sat Aug 03, 2013 4:37 pm    Post subject: Reply with quote  Mark this post and the followings unread

Benjamin AM wrote:
Quote:
My thought was to connect the gate through 1nF to the cv in just not to get clicks on the start of the note when pressing the keyboards.

Isak, I believe that this will not work for what I understand that you want to accomplish.
Here is my suggestion for you. I am assuming that you plan on using the Yusynth VCA and that your gate output is 10V. I'll let you figure out the switching part, it is easy. Essentially you will have to run an envelope generator to one input of the VCA and a gate to the second input. The gate would be interrupted by the circuit that I've attached. This should add a small lag and release to the gate that will reduced the clicking effect that you wish to get rid of. This circuit will cut the gate level in half. To compensate, adjust the input resistor(R20 originally 68k) in the VCA circuit to something like 33k or 36k. Hope that helps.


ok, did that, the Level was reduced as you said, but i can still hear clicks when releasing the keys.
maybe i need to increase resistor value or cap value?

some sound clips..

cheers.


clicks.wav
 Description:

Download
 Filename:  clicks.wav
 Filesize:  670.89 KB
 Downloaded:  87 Time(s)


_________________
http://www.myspace.com/mgmtrance
Back to top
View user's profile Send private message
isak



Joined: Dec 13, 2009
Posts: 703
Location: Israel
Audio files: 18

PostPosted: Sun Aug 04, 2013 4:12 am    Post subject: Reply with quote  Mark this post and the followings unread

ok, i found something calls a "Slew Limiter".
maybe it can help me with the gate clicks?


slew.jpg
 Description:
 Filesize:  53.82 KB
 Viewed:  56 Time(s)
This image has been reduced to fit the page. Click on it to enlarge.

slew.jpg



_________________
http://www.myspace.com/mgmtrance
Back to top
View user's profile Send private message
isak



Joined: Dec 13, 2009
Posts: 703
Location: Israel
Audio files: 18

PostPosted: Mon Aug 05, 2013 1:38 am    Post subject: Reply with quote  Mark this post and the followings unread

the slew limiter helped Cool
clicks is totally gone!!!

_________________
http://www.myspace.com/mgmtrance
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic Moderators: Scott Stites
Page 1 of 1 [9 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software » YuSynth
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
e-m mkii

Please support our site. If you click through and buy from
our affiliate partners, we earn a small commission.


Forum with support of Syndicator RSS
Powered by phpBB © 2001, 2005 phpBB Group
Copyright © 2003 through 2009 by electro-music.com - Conditions Of Use