Unfortunately it not quite as easy as it should be, as companies such as
Steinberg and Digidesign "extend" (i.e. abuse) the documented WAVE
format with such things as over-large format chunks; I have had to
modify my strictly compliant code more than once to accommodate such
technically non-compliant files.
This why people writing soundfile code for critical production work
really do need to use libsndfile, as the author has refined it over very
many years (and of course it is used everywhere so tested to
destruction, so to speak) to catch all such idiosyncracies. I have
limited myself to WAVE and AIFF PCM (and of course AMB).
The "channelx" (CDP multi-channel toolkit, now open source so also
available for Linux) command line is really very simple, as it is almost
automatic, e.g. to split a 6-chan file "hex.wav" to files called
"hex_c*.wav":
channelx -ohexsplit.wav hex.wav 1 2 3 4 5 6
gives files called "hexsplit_c1.wav ... hexsplit_c6.wav"
(the -o flag option allows you to specify a custom base outfile name to
which the '_cN' suffix will be added as needed).
see: http://people.bath.ac.uk/masrwd/mctools.html
Last updated March 2014
Richard Dobson
On 04/09/2014 01:48, Sampo Syreeni wrote:
On 2014-09-03, Martin Leese wrote:
It's a command line program. Very fast. Needs lotsa careful typing.
Or sloppy typing into a text editor to create a BAT file. Then
execute the BAT file.
And, by the way, if you need some de novo code to do something like
that, it ain't gonna be too expensive in the first place.
IFF/AIFF/RIFF/QTFF/BMFF and their ilk are downright ridiculously easy to
decode and sieve. Let's say, it only takes a day's worth of effort to
extract what you want from them, so that you could easily offer $80/h
before taxes for the effort.
Encoding into the various forms, that's another ballgame.
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