Sounds on the fly

BlitzMax Forums/BlitzMax Programming/Sounds on the fly

Pengwin

(Posted 2009) [#1]

I was wondering, is it possible to create sounds from within BlitzMax, without using a sound file? I talking about in the same way we used to create sounds on the 8-bit computer.

Pengwin

(Posted 2009) [#2]

Ah, I think I have just answered my own question.

Am I right in thinking the CreateAudioSample command does this?

therevills

(Posted 2009) [#3]

I found this somewhere which does it:

Const freq:Int=44100
Const updatespeed:Int=10
Const buffersize:Int=freq/updatespeed

Local buffer:TAudioSample[2]
buffer[0]=CreateAudioSample(buffersize,freq,SF_STEREO16BE)
buffer[1]=CreateAudioSample(buffersize,freq,SF_STEREO16BE)

Global sound:TSound[2]
sound[0]=LoadSound(buffer[0])
sound[1]=LoadSound(buffer[1])

Playsound sound[0]

degac

(Posted 2009) [#4]

Just give a look to the help of BlitzMax, from the example

' createaudiosample.bmx
Local sample:TAudioSample=CreateAudioSample( 32,11025,SF_MONO8 )
For Local k=0 Until 32
        sample.samples[k]=Sin(k*360/32)*127.5+127.5
Next
Local sound:TSound=LoadSound( sample,True )
PlaySound(sound)
Input

of course you need to 'fill' in the proper way the Audio Sample...

Perturbatio

(Posted 2009) [#5]

I wrote this a while back:

(BMX) Synthesize a simple sound sample