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- Rate Converter Plugin Using libavcodec
- ======================================
-
- The plugin in rate-lavc subdirectory is an external rate converter using
- libavcodec's resampler. You can use this rate converter plugin by defining a
- rate PCM with "converter" parameter, such as:
-
- pcm.my_rate {
- type rate
- slave.pcm "hw"
- converter "lavcrate"
- }
-
- The plug plugin has also a similar field, "rate_converter".
-
- Or, more easily, define a global variable "defaults.pcm.rate_converter",
- which is used as the default converter type by plug and rate plugins:
-
- defaults.pcm.rate_converter "lavcrate"
-
- Write the above in your ~/.asoundrc or /etc/asound.conf.
-
- The following converter types are available:
-
- - lavcrate_higher Use length=64
- - lavcrate_high Use length=32
- - lavcrate Use length=16
- - lavcrate_fast Use length=8
- - lavcrate_faster Use length=4
-
- Linear interpolation and cutoff values are automatically used depending on
- the supplied parameters and whether the plugin is used to upsample or
- downsample.
-