cfrazer

I am simply trying to record a sound file to my HD from this patch, using sfrecord~ and cant figure it out. Any help is appreciated.

This is taking input from an arduino and using it to generate midi tones. But rather than come out of the computers speakers, I just want to record the sound for for further processing.

simple-sound-file-recording

The problem here is that the mtof~ object is not outputting any audio. It is outputting a frequency value. You need an oscillator object to create an audio signal from this frequency. In the example below I've used saw~, a sawtooth wave generator.

A key concept that you need to understand here is that the stripy MSP patch cords to not necessarily indicate the presence of audio, they merely indicate that a number is being sent at signal rate. Take a look at the output of sfrecord~ connected to the number~ box. This number indicates the elapsed recording time in milliseconds. This is not audio, yet it uses a signal patchcord because the data is sent at signal rate.

Right! ok. so in theory ( i am away from a computer that can run max right now) the kslider outputs a midi value which a mtof~ turns into a frequency value. If we hook that freq value to a cycle~, saw~, etc. it will oscillate according to that frequency, and then that will be recordable?

I guess I am having trouble understanding when and how audio is output too. in my patch, the noteout is somehow getting modified by the midi tone slider, which then send it to pgmout. If i want that modified sound to be recorded, how would i go about that?

Thanks much for the help, it is great to have some really basic info.

Right! ok. so in theory ( i am away from a computer that can run max right now) the kslider outputs a midi value which a mtof~ turns into a frequency value. If we hook that freq value to a cycle~, saw~, etc. it will oscillate according to that frequency, and then that will be recordable? 

Thanks much for the help, it is great to have some really basic info.


The issue is that the noteout & pgmout objects are talking to an OS–level software synthesizer, external to Max. The only way for Max to record this is to loop the audio from the OS back into Max.

Alternatively, you could build a synth in Max, or use vst~ to host a VST plugin in Max.

is there a simple way (or object) to do that, to import the OS audio into max?

Simple Sound File Recording