Data Sonification. My guess.

[Gabriele Battaglia]

Hello all.

Days ago I asked about using pyo to sonify a numeric serie of data.

Just to exercise on pyo, I come out with this thing but it doesn't produce any sound... LOL

Yeah, I know I have a long way still ahead.

Could someone could tell me why it does not work?

The basic idea is to have a simplest python module to import and to pass a list with numbers to sonify.

It doesn't care to have notes played, for my porpous a sweeping sine could do the job.

Here is my code.

***

def sonify2(data=[], totalduration=10.0):

 # Sonify2 a serie of data, V3.0, march 18th, 2024

 # data= values list to sonify

 # float totalduration= duration of whole sonification in seconds

 # it plays sound and returns nothing

 totalduration=float(totalduration)

 datalength = len(data)

 if datalength < 2:

  print("Data serie too short.")

  return

 from pyo import Server, SigTo, Sine, Pan

 s=Server(verbosity=1).boot()

 s.start()

 singlesoundduration=totalduration/datalength

 soundlowerlimit=130.0 # C3

 soundupperlimit=4186.0 # C8

 soundrange=soundupperlimit - soundlowerlimit

 datarange = max(data) - min(data)

 startsound=soundlowerlimit + soundrange/2

 slide=SigTo(init=startsound, value=startsound, time=singlesoundduration)

 sound=Sine(freq=slide, mul=.35)

 stereo=SigTo(init=0.0, value=1.0, time=totalduration)

 p=Pan(sound, pan=stereo).out()

 for j in data:

  x = (j-min(data)) * 100/datarange

  y = x/100*soundrange

  slide.value=soundlowerlimit + y

 s.stop()

 s.shutdown()

 return

[Alexandros Drymonitis]

With a quick glimpse, it looks like you're not keeping your function alive. In Pyo, in general you want all PyoObjects in the global scope, so they are not garbage collected once your function exits. 

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[Gabriele Battaglia]

Il 18/03/2024 17:07, Alexandros Drymonitis ha scritto:
> With a quick glimpse, it looks like you're not keeping your function
> alive. In Pyo, in general you want all PyoObjects in the global scope,
> so they are not garbage collected once your function exits.

Ok Alexandros, I'll try to pass it to a thread, so I can listen to the
sonification while function returns to main program.

I've never used threads so I must try to undestand how they works.

Thanks for your help.


Gabe.