Max Msp cv to Eurorack
Hi there,
I'm a max user and also have eurorack system.
I'm about to purchase Motu interface and to use some of its out's to generate cv to my eurorack system.
I was wondering how it does - Lets say I want to send a sine LFO to control my filter cutoff that expect -5 to +5 v but the cycle~ in max is alternating between -1 and + 1
I dont understand how it goes. do I need to multiple it by 5 ? this doesnt make any sense. where and when the scaking masde between the 'digital world' of MAX and the 'electrical world' of eurorack
Can you please explain me this ?
Thanks
I use an Expert Sleepers ES-8. I use the scale object to scale the output voltage. This link also contains videos about Max and ES-8.
https://www.expert-sleepers.co.uk/es8.html
There is also a package available in the package manager called CV Tools....but I never used it
https://cycling74.com/articles/get-the-gen-cv-tools-package-by-spektro-audio/
so basically max output between -1 and +1 is equivalent to -1 and +1 Volt in my eurorack ?
so if I want my lfo to cycle between -5 and + 5 v I need to scale it before sending to DAC ?
I don,t have my computer with me but as far as I remember it is as follows. Max objects like cycle output a normalized scale of -1 to 1. This is converted by my Expert Sleepers ES-8 to a range of -10V to 10V. The ES-8 appears as a normal dac object. If I want to have -5V to 5V I put a scale -1. 1. -0.5 0.5 object behind the cycle.
OK thanks. now it is more clear!
Wondering if someone here use it with Motu ultralite and can tell if the Motu device does the same scaling ( from -1 +1 to -10V +10V
Motu ultralite outputs -4.6 to +4.6 volts DC
for audio signal from -1. to +1.
on line outs, unbalanced.
If one takes balanced out DC between - phase and + phase it is
double, -9.2 to +9.2 dc.
On phones output it is -4.9 to + 4.9
P.S.
It is easier to measure voltage using sig~ that cycle...
If You need exact -5 to +5 volt could use balanced out,
and scale cycle output.
I am not sure if all hardware devices output same voltage
Use a joransloque Rx2 2 ch interface