Initial commit

[audio-libsamplerate.git] / README

Audio-LibSampleRate version 0.001
=================================

Secret Rabbit Code (aka libsamplerate) is a Sample Rate Converter for
audio. One example of where such a thing would be useful is converting
audio from the CD sample rate of 44.1kHz to the 48kHz sample rate used
by DAT players.

SRC is capable of arbitrary and time varying conversions ; from
downsampling by a factor of 256 to upsampling by the same factor.
Arbitrary in this case means that the ratio of input and output sample
rates can be an irrational number. The conversion ratio can also vary
with time for speeding up and slowing down effects.

SRC provides a small set of converters to allow quality to be traded
off against computation cost. The current best converter provides a
signal-to-noise ratio of 145dB with -3dB passband extending from DC to
96% of the theoretical best bandwidth for a given pair of input and
output sample rates.

This distribution is a Perl interface to libsamplerate.

INSTALLATION

To install this module type the following:

   perl Makefile.PL
   make
   make test
   make install

DEPENDENCIES

This module requires these other modules and libraries:

* libsamplerate

COPYRIGHT AND LICENCE

Copyright (C) 2015 by Marius Gavrilescu

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.