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updated ui added new features

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zach
2025-12-27 15:32:32 -07:00
parent 02ca7801ea
commit a2cfae3a22
589 changed files with 181780 additions and 569 deletions
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third_party/codec2/octave/ch_fading.m
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% ch_fading.m
% David Rowe
% April 2018
% function to write float fading samples for use by C programs
function ch_fading(raw_file_name, Fs, dopplerSpreadHz, len_samples)
randn('seed',1);
spread = doppler_spread(dopplerSpreadHz, Fs, len_samples);
spread_2ms = doppler_spread(dopplerSpreadHz, Fs, len_samples);
hf_gain = 1.0/sqrt(var(spread)+var(spread_2ms));
printf("hf_gain: %f\n", hf_gain);
% interleave real imag samples
inter = zeros(1,len_samples*4);
inter(1:4) = hf_gain;
for i=1:len_samples
inter(i*4+1) = real(spread(i));
inter(i*4+2) = imag(spread(i));
inter(i*4+3) = real(spread_2ms(i));
inter(i*4+4) = imag(spread_2ms(i));
end
f = fopen(raw_file_name,"wb");
fwrite(f, inter, "float32");
fclose(f);
endfunction