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Smarc audio rate converter, ...another SR converter developed at TÚlÚcom ParisTech, France.
post Oct 25 2011, 10:50
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Smarc is a fast and high quality audio rate converter. It allows conversion between any samplerate. Smarc is a command-line program and a C library to be integrated in other applications.

  • signal rate conversion between any sample rates.
  • optimized for conversion between standard audio sample rates.
  • command-line tool to convert audio files
  • C library to integrate smarc converter into other applications.
  • Initially designed to convert audio, but also any 1-D signals such as EEG, seismic signals, etc.
  • Convert sample rate using polyphase decimation and interpolation filters. This method guarantees high-quality for upsampling and downsampling.
  • Internal filters can be tuned to emphasize speed or quality.

Official website
Official download page
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post Oct 25 2011, 19:01
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Well, I've read through the "internals" document (15 pages).

It contains an alarming number of typos. Some parts are still in French.
I did not find anything revolutionary. There seem to be just some speed and memory-related optimizations.

... For others ratios, the decompostion is automatically computed but the result is often not optimal
and a manual help is recommanded, in this way one can manually defined a better decomposition.

This quote from the conclusion is not too convincing. smile.gif

This post has been edited by Martel: Oct 25 2011, 19:02

IE4 Rockbox Clip+ AAC@192; HD 668B/HD 518 Xonar DX FB2k FLAC;
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