This patch modifies script example_dblock.m to create in
addition to existing default coefficients blob with parameter
R=0.98 a set of blobs those provide (-3 dB) cut-off frequencies
20, 30, 40, 50, 100, 200 Hz for 16 kHz and 48 kHz for various
usages. Human understandable parameters for blobs helps to select
the configuration for the needed dcblock usage.
The parameter value R for given frequencies is calculated
with iterative function dcblock_rval_calculate(). A closed
form equation might be possible to derive from the transfer
function. If such is found this function can be replaced with
quicker equation -- or with more advanced faster converging
iteration.
The topology blob export functions are also modified to add
comment line for exact build command.
Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
This commits adds the scripts to generate the bytes control blob
for the DCB. It also provides some generic scripts to convert
valid binary blob to a csv or binary file (usable by sof-ctl)
or an m4 byte control topology file.
This commit adds two new folders under tools/tune
- dcblock: scripts to generate the blob in Octave
- common: scripts to convert any generic blob to a config file.
Signed-off-by: Sebastiano Carlucci <scarlucci@google.com>
Seppo Ingalsuo