Just checked the Disting 4 manual for the latest firmware - have a look at algorithm A-5 for the converter.

Jonathan Shapero
From my iPad Air

> On 9 Sep 2018, at 17:07, Jonathan jss9h@... 1 < Doepfer_a100@yahoogroups.com > wrote:
>
> Ther are ar least two linear to expo converters in Euro rack that I know of, and if I am not mistaken there is also one in the Disting 4!
> Harvestman (now known as IME) do the English Tear (weird name) which coincidentally was designed to interface MS20s and other Hz/v synths to modular, and Ladik also have one in their catalogue - U201, well documented on the website ladik.eu
> Hope that helps you solve the issue.
>
> Jonathan Shapero
> From my iPad Air
>
>> On 9 Sep 2018, at 10:17, Diego Ragnini diegora@... 1 < Doepfer_a100@yahoogroups.com > wrote:
>>
>> Hello,
>> Sorry if today I am trying to find answers about modules which are not Doepfer, I frankly guess that this list users can be more helpful than ES customer service. Moreover, due to my eyesight flaw, I barely can watch details on video tutorials which often are pedantic and verbose.
>>
>> I am intended to replicate an MS-20 typical patch on eurorack: audio signal driving a VCO and/or some MIDI instruments (external MIDI gear as well as software MIDI instrument, i.e. plug-ins).
>>
>> The MS-20 features a unique Ext Signal Processor which treats the audio signal properly in order to finally output cv and gates. Of course, it cannot be used to drive eurorack VCO’s 1V/Oct input (exponential), since it delivers Hz/V (linear) and I didn’t find a reliable eurorack module for this job.
>>
>> I think I have 2 options.
>>
>> 1) the first would be to keep using the MS-20 Ext Signal Processor and to translate the Hz/V into the 1V/Oct by means of the linear/exponential converter featured by the Disting Mk4.
>>
>> 2) the second option would be, overriding the MS-20 ESP, to use the pitch&envelope tracker, also featured by the Disting Mk4.
>> This second options seems preferable to me, freeing the MS-20 ESP for other applications.
>>
>> Am I right
>>
>> In both cases, I also need to translate the 1V/Oct into MIDI pitch and the gates into MIDI notes.
>> Can I take these signals (the envelope tracker output should be further treated via a comparator in order to obtain gates) from the Disting MK4 and send them to the Mac via the Expert Sleepers ES-8 inputs If yes, what Expert Sleepers plug-in (from the Silent Way Suite) should I consider in order to get the job properly done
>>
>> Moreover, how could I translate the differences in amplitude of the original audio signal into MIDI velocity Is this possible
>>
>> Best regards,
>>
>> Diego
>>
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>> Posted by: Diego Ragnini < diegora@... >
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> Posted by: Jonathan < jss9h@... >
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