'CV Generator' iPhone app now available on the App Store

Discussion and support for Expert Sleepers' Silent Way software and hardware.

Moderators: Kent, os

Post Reply
User avatar
os
Super Deluxe Wiggler
Posts: 13670
Joined: Tue Jun 30, 2009 6:55 am
Location: UK
Contact:

'CV Generator' iPhone app now available on the App Store

Post by os » Fri May 21, 2010 3:27 am

http://www.expert-sleepers.co.uk/cvgenerator.html

http://itunes.apple.com/WebObjects/MZSt ... 67071&mt=8
CV Generator is an iPhone app that generates audio signals which may be used in conjunction with suitable hardware to control analogue synthesisers via Control Voltages (CVs).
The app uses the same technique as the Silent Way AC Encoder plug-in. You therefore need hardware such as that described on the AC Encoder page to turn the iPhone's audio output into CVs.

It is recommended to use an iPhone dock's line out rather than the iPhone's own headphone output, in order to get a stronger signal to begin with. Even then, the dock's output is quite low compared to, say, a proper computer audio interface, so you will almost certainly need an active circuit with reasonable gain to get a usable CV range.

CV Generator can generate two CVs, from the left and right channels of the iPhone's stereo output. The current version of the app has two modes for controlling the CVs: an XY controller for controlling both CVs from a single touch, and a pair of sliders for controlling the CVs independently.
Image

User avatar
mono-poly
Le Cheff
Posts: 5423
Joined: Fri Nov 21, 2008 3:40 pm
Location: Rotterdam, Netherlands

Post by mono-poly » Fri May 21, 2010 4:48 am

You really should offer a ready made hardware solution for the iphone app.
And also something to avoid using the iphone dock.
And i love to see more interaces for it like reacting on the phone's movement.
And what about a wind controler trough the mic?

I think this is really gonna be awesome but an option for buying a standalone hardware interface with it is a must have.
Just like not using the iphone's dock.


:banana:
The farad is the captain of my print.

http://www.mono-poly.nl
http://www.noodlebar.org

WTB blue lantern purple vco

User avatar
bleeps
Ultra Wiggler
Posts: 885
Joined: Thu Mar 04, 2010 2:38 pm
Location: LA CA USA

Post by bleeps » Sat May 22, 2010 12:19 pm

Whoa... iChoices. Well not quite, but awesome!

User avatar
goiks
Hardest Tryer
Posts: 1858
Joined: Thu Oct 16, 2008 5:04 pm
Location: bishop california

Post by goiks » Sat May 22, 2010 12:33 pm

nice!

User avatar
boothnavy
Ultra Wiggler
Posts: 991
Joined: Mon Mar 29, 2010 9:18 pm
Location: Westlake Village
Contact:

Post by boothnavy » Mon Jun 21, 2010 8:26 am

has anyone come up with a simple yet effective dock connector cable with 1/8" or 1/4" plugs attached? that seems like it would be the best solution for this...

User avatar
mono-poly
Le Cheff
Posts: 5423
Joined: Fri Nov 21, 2008 3:40 pm
Location: Rotterdam, Netherlands

Post by mono-poly » Mon Jun 21, 2010 9:45 am

yeah without a decent hardware unit for this app it is kinda useless imo.
Love to buy a hardware unit for it.
The farad is the captain of my print.

http://www.mono-poly.nl
http://www.noodlebar.org

WTB blue lantern purple vco

User avatar
jiblite
fail
Posts: 426
Joined: Sat Jan 23, 2010 4:42 pm
Location: Stockholm, Sweden

Post by jiblite » Mon Jun 28, 2010 5:27 am

maybe im doing it wrong, but
if i just stick a stereo minijack into the headphone socket, that splits into dual mono minijacks, i can then use those to control anything on my modular - eg osc freq, filter cutoff etc.

it just works :eek: output from iphone is low, so the range isn't huge, but im guessing if i amplify the iphone output then "hello range" occurs.

for the price of the app, this is just pure bargain goodness and i really hope you continue development and add lots of other features

1 - bloom/tenori esque sequencer
2 - basic cv blocks - lfo etc
lots of others of course

cheers / ben
Looking for 500 PB Fastener 3030580 black/grey soft touch knobs

Beware of Lawrence (larrydecable) - proper skam merchant

User avatar
os
Super Deluxe Wiggler
Posts: 13670
Joined: Tue Jun 30, 2009 6:55 am
Location: UK
Contact:

Post by os » Mon Jun 28, 2010 5:30 am

Well that's unexpected! Which model of iPhone are you using?

User avatar
mono-poly
Le Cheff
Posts: 5423
Joined: Fri Nov 21, 2008 3:40 pm
Location: Rotterdam, Netherlands

Post by mono-poly » Mon Jun 28, 2010 5:43 am

I tried it by direct plugging it into my ems synthi and it worked.
CV range could be a bit better but it's pretty good already.
The farad is the captain of my print.

http://www.mono-poly.nl
http://www.noodlebar.org

WTB blue lantern purple vco

User avatar
jiblite
fail
Posts: 426
Joined: Sat Jan 23, 2010 4:42 pm
Location: Stockholm, Sweden

Post by jiblite » Mon Jun 28, 2010 5:47 am

3g
and the cable is nothing fancy, apart from I had VDC trading make it for me

Stereo Female MiniJack socket to 2 Male Mono MiniJack Plugs - cable
length 20cm ***

and i use a

1 metre stereo mini jack to stereo mini jack cable

with it to make it male to male of course

*** is one of the most useful cables i have
great for making a mono output (together with a stackcable) into a dual mono output - for heaphones etc without just having it all through my left ear, also for inserting stereo from iphone, ipod etc into modular and also for taking a feed out of the mixer to do simple recording to an Olympus LS10 - worth ten times its weight in gold - and now it seems for using my iphone for fun cv control!

nice one / ben
Looking for 500 PB Fastener 3030580 black/grey soft touch knobs

Beware of Lawrence (larrydecable) - proper skam merchant

User avatar
jiblite
fail
Posts: 426
Joined: Sat Jan 23, 2010 4:42 pm
Location: Stockholm, Sweden

Post by jiblite » Mon Jun 28, 2010 5:49 am

probably should be on a different thread, but is there a simple eurorack amplifier available? with say a scale of x5 or x10?

cheers / ben
Looking for 500 PB Fastener 3030580 black/grey soft touch knobs

Beware of Lawrence (larrydecable) - proper skam merchant


User avatar
jiblite
fail
Posts: 426
Joined: Sat Jan 23, 2010 4:42 pm
Location: Stockholm, Sweden

Post by jiblite » Mon Jun 28, 2010 5:58 am

nice - but probably more suited (for me at least) to a full on silent way rig, with 8 outs?
if i just needed two channels of amplification - maybe even fixed or with a simple x2 and x5 switch on it, id hope there was something like the intellijel 2u modules - small, narrow, cheap, simple, but powerful.
sees gap in market, leaves door open .... and waits

cheers / ben
Looking for 500 PB Fastener 3030580 black/grey soft touch knobs

Beware of Lawrence (larrydecable) - proper skam merchant

User avatar
mono-poly
Le Cheff
Posts: 5423
Joined: Fri Nov 21, 2008 3:40 pm
Location: Rotterdam, Netherlands

Post by mono-poly » Mon Jun 28, 2010 9:09 am

[video][/video]

:bananaguitar:
The farad is the captain of my print.

http://www.mono-poly.nl
http://www.noodlebar.org

WTB blue lantern purple vco

User avatar
mono-poly
Le Cheff
Posts: 5423
Joined: Fri Nov 21, 2008 3:40 pm
Location: Rotterdam, Netherlands

Post by mono-poly » Mon Jun 28, 2010 2:39 pm

[video][/video]

:soapbox:
The farad is the captain of my print.

http://www.mono-poly.nl
http://www.noodlebar.org

WTB blue lantern purple vco

User avatar
Reptil
In space no one can hear you wiggle
Posts: 1500
Joined: Tue Dec 30, 2008 4:39 pm
Location: low orbit

Post by Reptil » Mon Jun 28, 2010 3:39 pm

dikke poep :yay: :party: :emt:
Image

skweeegor
I can't believe I ate the whole thing
Posts: 502
Joined: Fri Feb 19, 2010 2:03 pm
Location: Ottawa

Post by skweeegor » Fri Jul 09, 2010 9:35 pm

I recently made a cable to use with silent way AC. I decided to give it a go with the iPhone app after I tested with my audio interface (everything worked), and I got something but with a very limited range, which I assume is due to the iPhone's weak output.

I had a CMOY headphone amp lying around I never use, so I used that to boost the iPhone out and then patched out from there to the modular and I got a much more useable range (up to about 8-9V!)

Just wondering if there's anything unsafe about doing it this way since this isn't really the headphone amp's intended purpose.

User avatar
os
Super Deluxe Wiggler
Posts: 13670
Joined: Tue Jun 30, 2009 6:55 am
Location: UK
Contact:

Post by os » Sat Jul 10, 2010 4:50 am

Sounds safe enough. You're using the headphone amp to amplify the output of a headphone jack.

User avatar
ersatzplanet
Synthwerks Design
Posts: 6668
Joined: Fri Mar 06, 2009 1:18 pm
Location: Seattle WA

Post by ersatzplanet » Thu Nov 11, 2010 1:06 am

Ok - I know it has been awhile since this topic was active, but I have looked around and cannot find a wiring diagram that shows how to make the cable for stereo - two channel use - for the outputs of the iPhone. The only schematic I see is for using a balanced out from the tip and ring lines to make one mono output. What circuit are the people using in these videos using to generate TWO channels of CV from the stereo out of the iPhone? Links?

I have made a prototype iPhone module for myself and would love to change it to be switchable between audio and CV usage.
-James
-James

James Husted - Synthwerks, LLC - www.synthwerks.com - info@synthwerks.com - james@synthwerks.com
Synthwerks is a proud member of the Mostly Modular Trade Association (http://www.mostlymodular.com).
Always looking to trade for Doepfer P6 cases

seychmar
Common Wiggler
Posts: 147
Joined: Fri Jul 30, 2010 2:46 am
Location: Belgium

Post by seychmar » Thu Nov 11, 2010 1:48 am

The Doepfer A-183-3 gives you 1 channel of up to 4x amplification. Quite cheap too.
jiblite wrote:nice - but probably more suited (for me at least) to a full on silent way rig, with 8 outs?
if i just needed two channels of amplification - maybe even fixed or with a simple x2 and x5 switch on it, id hope there was something like the intellijel 2u modules - small, narrow, cheap, simple, but powerful.
sees gap in market, leaves door open .... and waits

cheers / ben

User avatar
os
Super Deluxe Wiggler
Posts: 13670
Joined: Tue Jun 30, 2009 6:55 am
Location: UK
Contact:

Post by os » Thu Nov 11, 2010 4:00 am

ersatzplanet wrote:What circuit are the people using in these videos using to generate TWO channels of CV from the stereo out of the iPhone?
You'd basically use two of these:
Image

On the left side, where it says 'ring' use the shield on the iPhone stereo jack. Where it says 'tip' use the tip for one channel and ring for the other.

User avatar
lessavyfav
Ultra Wiggler
Posts: 990
Joined: Wed Jun 02, 2010 11:00 pm
Location: Brooklyn, NY

Post by lessavyfav » Thu Nov 11, 2010 5:28 am

Is sounds like jiblite just used a stereo to 2 mono splitter without the magic DC offset business- that sounds good to me. I'm not ready to get a full out ES module but I think the Frankenstein wires are too sloppy. What are the risks of not using the modded cables?

User avatar
os
Super Deluxe Wiggler
Posts: 13670
Joined: Tue Jun 30, 2009 6:55 am
Location: UK
Contact:

Post by os » Thu Nov 11, 2010 5:36 am

That it simply won't work :)

User avatar
lessavyfav
Ultra Wiggler
Posts: 990
Joined: Wed Jun 02, 2010 11:00 pm
Location: Brooklyn, NY

Post by lessavyfav » Thu Nov 11, 2010 11:06 am

[quote="jiblite"]3g
and the cable is nothing fancy, apart from I had VDC trading make it for me

Stereo Female MiniJack socket to 2 Male Mono MiniJack Plugs - cable
length 20cm ***

and i use a

1 metre stereo mini jack to stereo mini jack cable

with it to make it male to male of course
/ ben[/quote]

So maybe I read this wrong. jiblite- your cable had the DC offset circuit in it. It reads like it doesn't. I guess it must based on the Expert Sleeper...

Post Reply

Return to “Expert Sleepers”