projects / audio-libsamplerate.git / blame
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| 299d38ae | 1 | Audio-LibSampleRate version 0.002 |
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2 | ================================= |
| 3 | ||
| 4 | Secret Rabbit Code (aka libsamplerate) is a Sample Rate Converter for | |
| 5 | audio. One example of where such a thing would be useful is converting | |
| 6 | audio from the CD sample rate of 44.1kHz to the 48kHz sample rate used | |
| 7 | by DAT players. | |
| 8 | ||
| 9 | SRC is capable of arbitrary and time varying conversions ; from | |
| 10 | downsampling by a factor of 256 to upsampling by the same factor. | |
| 11 | Arbitrary in this case means that the ratio of input and output sample | |
| 12 | rates can be an irrational number. The conversion ratio can also vary | |
| 13 | with time for speeding up and slowing down effects. | |
| 14 | ||
| 15 | SRC provides a small set of converters to allow quality to be traded | |
| 16 | off against computation cost. The current best converter provides a | |
| 17 | signal-to-noise ratio of 145dB with -3dB passband extending from DC to | |
| 18 | 96% of the theoretical best bandwidth for a given pair of input and | |
| 19 | output sample rates. | |
| 20 | ||
| 21 | This distribution is a Perl interface to libsamplerate. | |
| 22 | ||
| 23 | INSTALLATION | |
| 24 | ||
| 25 | To install this module type the following: | |
| 26 | ||
| 27 | perl Makefile.PL | |
| 28 | make | |
| 29 | make test | |
| 30 | make install | |
| 31 | ||
| 32 | DEPENDENCIES | |
| 33 | ||
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34 | This module requires no other modules and libraries, as libsamplerate |
| 35 | is bundled with this module. | |
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36 | |
| 37 | COPYRIGHT AND LICENCE | |
| 38 | ||
| 299d38ae | 39 | Copyright (C) 2015-2016 by Marius Gavrilescu |
| 27013d8f | 40 | |
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41 | This library is free software; you can redistribute it and/or modify |
| 42 | it under the same terms as Perl itself, either Perl version 5.20.2 or, | |
| 43 | at your option, any later version of Perl 5 you may have available. | |
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44 | |
| 45 |