2010/1/27 René Dudfield <ren...@gmail.com>: > > > On Fri, Jan 22, 2010 at 7:31 PM, Olof Bjarnason <olof.bjarna...@gmail.com> > wrote: >> >> OS: Ubuntu 9.04 >> Python: 2.6.2 >> PyGame: 1.8.1release >> >> I'm trying to generate some sounds with pygame. >> >> I was hindered some by how to use sndarray - but it all got easier >> once I set the mixer-init to easy/retro defaults. >> >> The first experiment was to just play a "sawtooth" wave: >> >> <code src="sndtest.py"> >> import pygame >> import Numeric >> >> pygame.mixer.pre_init(11025,8,1,4096) #mono, unsigned, 8-bit sound. C64 ;) >> pygame.init() >> print pygame.mixer.get_init() # to make sure I got what I wanted, just >> watch stdout >> >> pygame.sndarray.make_sound(Numeric.array(range(250)*100)).play() >> >> while pygame.mixer.get_busy(): >> pygame.time.wait(200) >> </code> >> >> 'python sndtest.py' produces slightly different audio each time. >> >> I improved readability a little, to find out where I did go wrong, and >> to my great surprise, this *silenced* my speakers: >> >> <code src="sndtest2.py"> >> import pygame >> import Numeric >> >> pygame.mixer.pre_init(11025,8,1,4096) #mono, unsigned, 8-bit sound. C64 ;) >> pygame.init() >> print pygame.mixer.get_init() # to make sure I got what I wanted, just >> watch stdout >> >> seq = range(250)*100 >> na = Numeric.array(seq) >> snd = pygame.sndarray.make_sound(na) >> snd.play() >> >> while pygame.mixer.get_busy(): >> pygame.time.wait(200) >> </code> >> >> 'python sndtest2.py' only produces a low-volume "spark" then nothing >> each time run. >> >> What am I doing wrong here? There is no randomness in 'sndtest.py', >> and 'sndtest2.py' should at least produce the same output, afaiks. >> >> -- >> twitter.com/olofb >> olofb.wordpress.com > > > hi, > > > here's your example expanded with some of the details commented for you: > http://rene.f0o.com/~rene/stuff/sndtest2.1.py
Great! > > > Please use a recent pygame. sndarray has had bugs fixed since 1.8.1. I see. > > For ubuntu you may have to compile from source, since they still haven't > updated their package in time for ubuntu 9.10: > http://pygame.org/wiki/CompileUbuntu Um a little too much wrong-kind-of-work to be fun. > > However, as of the 14th of jan 2010 it looks like ubuntu has pygame 1.9.1 in > for the next ubuntu release (10.4)... :) Great, at last! (however I'm seriously considering dumping Ubuntu for Archlinux or something. Ubuntu are *too slow updating their package databases* nowadays..) > > > Also please use numpy instead of numeric... since numpy is the new numeric > for the past few years. The most recent sound array examples use numpy. > OK. > > It may also be worth searching on pygame.org for sndarray examples, and > looking at the example that comes with pygame. Also searching with google > search turns up some results. > > http://www.google.com/codesearch?hl=en&lr=&q=file%3A\.py%24+pygame.sndarray&sbtn=Search > "file:" googling is neat! Didn't know of that, thanks. > > > cheers, > -- http://olofb.wordpress.com
