[Python-Dev] linuxaudiodev test does nothing
Charles G Waldman
Thu, 31 Aug 2000 18:01:22 -0500 (CDT)
Ka-Ping Yee writes:
> Side note: is there a well-defined platform-independent sound
> interface we should be conforming to? It would be nice to have a
> single Python function for each of the following things:
> 1. Play a .wav file given its filename.
> 2. Play a .au file given its filename.
These may be possible.
> 3. Play some raw audio data, given a string of bytes and a
> sampling rate.
This would never be possible unless you also specifed the format and
encoding of the raw data - are they 8bit, 16-bit, signed, unsigned,
bigendian, littlendian, linear, logarithmic ("mu_law"), etc?
Not only that, but some audio hardware will support some formats and
not others. Some sound drivers will attempt to convert from a data
format which is not supported by the audio hardware to one which is,
and others will just reject the data if it's not in a format supported
by the hardware. Trying to do anything with sound in a
platform-independent manner is near-impossible. Even the same
"platform" (e.g. RedHat 6.2 on Intel) will behave differently
depending on what soundcard is installed.