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Buchla Music Easel CV out to Freq in Max/Msp

April 24, 2014 | 3:00 pm

I’m trying to get cv information from my Music Easel and to
quantize it in 1V per octave.
Buchla CV range span from 0 to 10 v.
I use a Motu Ultralight, so I’m capable to get CV (and send them to the Buchla using proper 1/4" jack to banana cables).

Any suggestion about how to perform the conversion CV to Midipitch.

Many thanks,


April 24, 2014 | 10:25 pm

What mechanism are you using to get DC values into the computer? Most audio interfaces (even the Ultralight) will DC-block input values; the Silent Way CV Input requires a VCA dedicated to modulating the value in order to pass the signal pass the audio input blocking.

April 24, 2014 | 11:27 pm

Hi thanks for your reply.

I simply use custom cables 1/4" to Banana, no specifc other hardware.
I take the cv out from Buchla and I route it to my Motu.
I’m able to use the other cv’s but I have no idea about the conversion strategy
I should apply to the signal.

Many thanks,


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