Sample rate converter (SRC) Setup Tools

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This is a tool to set up SRC conversions sample rates list, define

quality related parameters, and test the C implementation for a number

of objective audio quality parameters.

The tools need GNU Octave version 4.0.0 or later with octave-signal

package.

src_std_int32.m

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This script creates the default coefficient set and contains nothing

else but call for src_generate.

src_tiny_int16.m

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This script creates the tiny coefficient set. The script contains an

example how to customize the input/output rates matrix and in a simple

way the scale conversions quality. More controlled quality adjust can

be done by editing file src_param.m directly. Note that int16

presentation for SRC coefficients will degrade even the default

quality.

src_generate.m

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Creates the header files to include to C into directory "include". A

report of create modes is written to directory "reports". The

coefficients need to be copied to directory

sof.git/src/include/sof/audio/coefficients/src.

The default quality of SRC is defined in module src_param.m. The

quality impacts the complexity and coefficients tables size of SRC.