2020-03-12 06:34:51 +08:00
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function example_dcblock();
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% Set the parameters here
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2021-07-20 23:03:02 +08:00
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tplg_fn = "../../topology/topology1/m4/dcblock_coef_default.m4" % Control Bytes File
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2020-03-12 06:34:51 +08:00
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% Use those files with sof-ctl to update the component's configuration
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blob_fn = "../../ctl/dcblock_coef.blob" % Blob binary file
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alsa_fn = "../../ctl/dcblock_coef.txt" % ALSA CSV format file
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endian = "little";
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R_coeffs = [0.98, 0.98, 0.98, 0.98, 0.98, 0.98, 0.98, 0.98];
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blob8 = dcblock_build_blob(R_coeffs, endian);
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% Generate output files
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addpath ./../common
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tplg_write(tplg_fn, blob8, "DCBLOCK");
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blob_write(blob_fn, blob8);
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alsactl_write(alsa_fn, blob8);
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% Plot Filter's Transfer Function and Step Response
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% As an example, plot the graphs of the first coefficient
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fs = 48e3
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dcblock_plot_transferfn(R_coeffs(1), fs);
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figure
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dcblock_plot_stepfn(R_coeffs(1), fs);
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rmpath ./../common
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endfunction
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