37 lines
1.2 KiB
Plaintext
37 lines
1.2 KiB
Plaintext
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Sample rate converter (SRC) Setup Tools
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=======================================
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This is a tool to set up SRC conversions sample rates list, define
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quality related parameters, and test the C implementation for a number
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of objective audio quality parameters.
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The tools need GNU Octave version 4.0.0 or later with octave-signal
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package.
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src_std_int32.m
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---------------
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This script creates the default coefficient set and contains nothing
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else but call for src_generate.
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src_tiny_int16.m
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----------------
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This script creates the tiny coefficient set. The script contains an
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example how to customize the input/output rates matrix and in a simple
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way the scale conversions quality. More controlled quality adjust can
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be done by editing file src_param.m directly. Note that int16
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presentation for SRC coefficients will degrade even the default
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quality.
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src_generate.m
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--------------
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Creates the header files to include to C into directory "include". A
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report of create modes is written to directory "reports". The
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coefficients need to be copied to directory
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sof.git/src/include/sof/audio/coefficients/src.
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The default quality of SRC is defined in module src_param.m. The
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quality impacts the complexity and coefficents tables size of SRC.
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