Audio::DSP - Perl interface to *NIX digital audio device

Version 0.02

Description

   Audio::DSP is built around the OSS (Open Sound System) API and allows
   perl to interface with a digital audio device. The Audio::DSP object
   stores I/O parameters and also supplies temporary storage for raw
   audio data.

Requirements

   In order to use Audio::DSP, you'll need to have the necessary OSS
   drivers/includes installed. OSS is available for many popular Unices,
   and a GPLed version (with which this extention was developed and
   tested) is distributed with with the Linux kernel. See "See Also"
   below for relevant URLs.

Download

   The latest version may be downloaded from the Audio::DSP homepage:
       http://www.pdamusic.com/computer/audio-dsp.html

Installation

   The usual.

   perl Makefile.PL
   make
   make test (optional)
   make install

   NOTE: If for some reason the tests fail, it may be because the options
   specified in the tests are not compatible with your soundcard. I've
   used "lowest common denominator" settings (8 bit unsigned, 8 kHz
   mono), but they may not be so "common" to your soundcard. :-) In which
   case (if you know what you're doing) you may modify or simply skip the
   tests and do what you will...

To Do / Suggestion for Data Manipulation Extentions

   In keeping with purpose, I have not included any methods for data
   manipulation in the Audio::DSP extension (the Audio::DSP object
   provides storage for raw audio data read from the device, but that is
   all). It would, however, be nice to implement a suite of modules for
   the purpose of data manipulation (converting the data to common audio
   file formats, filtering, etc.). I would suggest a sort of shared
   "audio data object," to be passed between classes, containing the raw
   audio data as well as a few necessary paramters. A hash reference
   looking something like:

       {
           data     => 'gobbledegook',
           format   => 16,
           rate     => 44100,
           channels => 2,
       }

   would probably suffice. Let me know if this is something on which
   you'd be interested in collaborating.

Author

   Seth David Johnson
   [email protected]

Copyright

   Copyright (c) 1999-2000 Seth David Johnson. All Rights Reserved. This
   program is free software; you can redistribute it and/or modify
   it under the same terms as Perl itself.

See Also

   Open Sound System homepage
       http://www.opensound.com/

   Open Sound System - Audio programming
       http://www.opensound.com/pguide/audio.html

   A GPLed version of OSS distributed with the Linux kernel was used in
   the development of Audio::DSP. See "The Linux Sound Subsystem":

       http://www.linux.org.uk/OSS/

   For those curious, the Advanced Linux Sound Architecture (ALSA) API
   should remain compatible with the OSS API on which this extension is
   built. ALSA homepage:

       http://www.alsa-project.org/