Submit list for new spells

[Robin Cook <rcook AT wyrms.net>]

Updated sweep to 0.5.13 and added glib and gtk+ to the DEPENDS as well 
as adding some optional depends one of which is the attached 
libsamplerate spell.   I guess the libsamplerate also goes into the 
audio section.

Long Description of libsamplerate

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 12 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 97dB with -3dB passband extending from DC to 
96% of the theoretical best bandwidth for a given pair of input and 
output sample rates.

Since the library has few dependencies beyond that provided by the 
standard C library, it should compile and work on just about any 
operating system. With some relatively minor hacking it should also be 
relatively easy to port it to embedded systems and digital signal 
processors.

In addition, the library comes with a comprehensive test suite which can 
validate the performance of the library on new platforms.

Attachment: libsamplerate.tar.bz2
Description: Binary data

Attachment: sweep.tar.bz2
Description: Binary data