how to create speech waves with equal loudness in matlab ?

ana - 2024-03-29T22:16:49+00:00

Question: how to create speech waves with equal loudness in matlab ?

hi frnds i want matlab command or code for making speech waves with equal loudness in matlab i.e speech waves with same intensity and frequency.  

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Expert Answer

Neeta Dsouza answered . 2025-11-20

• Use the soundsc command:

 

 [y1,Fs1] = audioread('myRecord1.wav');
 [y2,Fs2] = audioread('myRecord2.wav');
  y1n = soundsc(y1,Fs1);
  y2n = soundsc(y2,Fs2);

• Use FFT to equalize the median dB:

 

 Pxx1 = abs(fft(y1));
 Pxx2 = abs(fft(y2));
 dB1 = median(10*log10(Pxx1(1:(end/2)).^2));
 dB2 = median(10*log10(Pxx2(1:(end/2)).^2));
 dB = [dB1 dB2];
 k = sqrt(10.^((max(dB)-dB)/10));
 y1n = k(1)*y1;
 y2n = k(2)*y2;

 

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