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| Re: ALF MC16 compatible analog synthesizer (hybrid) [message #350728 is a reply to message #350655] |
Mon, 14 August 2017 12:15   |
STYNX
Messages: 453
Registered: October 2012
Karma: 0
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On Sunday, August 13, 2017 at 11:02:15 PM UTC+2, Antoine Vignau wrote:
> That is cool, Jonas.
> Count me in for one, please, and keep up the good work,
>
> Antoine
I'm only making a few (less than 10) for myself and some friends (you included)
The CEM3396 chips are about $10/piece at the moment with some of them being duds.
Combined with the other chips it will result in a price of about $100 without shipping, assembly or testing.
A sales price would be about $200 and I wouldn't make anything with that ....
Its just a fun project. When im finished, I will provide all the schematics and layouts that anyone can make their own. It will have the option to use an external control-board with potentiometers or an DAC-Module that will allow software control. The 3 voices will be coupled (3 voice polyphonic) by the parameters but could be controlled individually. The individual programmability of each chip would need about 30 DAC channels ... to much for a single card (even with a sample-and-hold approach). Therefore I will implement a simple solution with expandable options (via headers) to add these software controls (io-select range).
Configurability by software could be done by a simple basic-script that sets the values for each parameter:
0. Waveform (for both oscillators A/B) 4 possible by 2bit select
1. Pulsewidth A
2. Pulsewidth B
3. Waveshape A
4. Waveshape B
5. Oscillator balance A/B
6. Filter Modulation (by oscillator A)
7. Filter Frequency
8. Filter Resonance
9. Gain (volume control)
All to be controlled by either analog input or software control by 8bit words.
.... but I have to get there first :-P
-Jonas
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| Re: ALF MC16 compatible analog synthesizer (hybrid) [message #350755 is a reply to message #350729] |
Mon, 14 August 2017 15:47 |
STYNX
Messages: 453
Registered: October 2012
Karma: 0
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On Monday, August 14, 2017 at 6:57:02 PM UTC+2, Antoine Vignau wrote:
> That is really cool, thank you!
>
> Antoine
I had this idea first in 2012 ...about 5 years ago :-) I don't think that I need another 5 years to finish this ... but you shouldn't expect anything final this year. I hope to have a 3 voice prototype ready next month. I will upload samples of the sound and music then. There might be some unknown details in the range the control voltages for the CEM3396 but I have to try out to know. I suspect that some inputs need -2.5V to +2.5V and others -2.5 to +5V but most need 0 to +5V.
-Jonas
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| Re: ALF MC16 compatible analog synthesizer (hybrid) [message #379412 is a reply to message #379410] |
Fri, 04 January 2019 20:32 |
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Originally posted by: Anthony Adverse
On Saturday, January 5, 2019 at 12:01:52 PM UTC+11, Michael J. Mahon wrote:
> Anthony Adverse <the.ertceps@gmail.com> wrote:
>> On Monday, August 14, 2017 at 4:36:57 AM UTC+10, STYNX wrote:
>>> Hi,
>>>
>>> i have begun to implement an idea that was on my mind for some years now :-)
>>>
>>> http://www.applefritter.com/?q=content/alf-mc16-compatible-h ybrid-synthesizer
>>>
>>> -Jonas
>>
>> Spiffy how does it go, 2 Alf's a Alpha Syntauri makes?
>>
>> A
>>
>
> The Alpha Syntauri system uses a Mountain Computer card set, with 16 wave
> table oscillators.
>
> I didn’t think the Alf was a wavetable device...
>
> --
> -michael - NadaNet 3.1 and AppleCrate II: http://michaeljmahon.com
Ahh got the wrong card... my bad :)
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| Re: ALF MC16 compatible analog synthesizer (hybrid) [message #379455 is a reply to message #379412] |
Sun, 06 January 2019 03:46 |
STYNX
Messages: 453
Registered: October 2012
Karma: 0
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Senior Member |
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On Saturday, 5 January 2019 02:32:42 UTC+1, Anthony Adverse wrote:
>
> Ahh got the wrong card... my bad :)
Not completely wrong. The MC16 was used in the syntauri as well.
It used a different software version than the MCMS.
You could add up to 5 ALF MC16 cards to support 15 channels!
The MCMS was a bit more flexible and saved a lot of slots though :-)
-Jonas
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