A simple-to-use sound file writer

Peter Otten __peter__ at web.de
Thu Jan 14 17:02:14 CET 2010


Alf P. Steinbach wrote:

> Just as a contribution, since someone hinted that I haven't really
> contributed much to the Python community.
> 
> The [simple_sound] code will probably go into my ch 3 at <url:
> http://tinyurl.com/programmingbookP3>, but sans sine wave generation since
> I haven't yet discussed trig functions, and maybe /with/ changes suggested
> by you?

> def _append_as_big_endian_int16_to( a, i ):
>      if i < 0:
>          i = i + 65536
>      assert( 0 <= i < 65536 )
>      a.append( i // 256 )
>      a.append( i % 256 )

>          data = array.array( "B" )               # B -> unsigned bytes.

Do you know that array.array() supports 16 bit signed integers? There's even 
a byteswap() method to deal with endianess.

> Utility class that may be used to capture output (an instance of this or
> any other file like class can be passed as "filename" to
> simple_sound.Writer):
> 
> <code>
> class BytesCollector:

Are you reinventing io.BytesIO() here?

Peter



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