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675970 |
Rate Converter Plugin Using Speex Resampler
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===========================================
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The plugin in rate subdirectory is an external rate converter using
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the Speex resampler (aka Public Parrot Hack) by Jean-Marc Valin. You can
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use this rate converter plugin by defining a rate PCM with "converter"
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parameter, such as:
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pcm.my_rate {
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type rate
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slave.pcm "hw"
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converter "speexrate"
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}
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The plug plugin has also a similar field, "rate_converter".
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Or, more easily, define a global variable "defaults.pcm.rate_converter",
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which is used as the default converter type by plug and rate plugins:
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defaults.pcm.rate_converter "speexrate"
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Write the above in your ~/.asoundrc or /etc/asound.conf.
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The following converter types are available:
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- speexrate_best Use quality 10 (equivalent to SRC_SINC_BEST_QUALITY)
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- speexrate_medium Use quality 5 (equivalent to SRC_SINC_MEDIUM_QUALITY)
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- speexrate Use quality 3 (equivalent to SRC_SINC_FASTEST)
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