Getting a warning with audiowrite ( audiowrite>clipInputData)
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I'm trying to read an audio file, add a white noise and then write the resampled audio to a file at 48 kHz. I'm getting a warning
" Warning: Data clipped when writing file. > In audiowrite>clipInputData (line 481)"
can someone please help me with that?
clc
clear
[y, Fs] = audioread('test.wav');% y samples from audio with Fs sampling frequency in [Hz]
sound(y, Fs); % listen to the audio input
Sigma = 1; % Standard deviation of the noise
N = length(y); % sample lenth
w = Sigma*randn(1,N); % Generate Gaussian noise
x = y+w'; % Add noise to the audio signal
figure (1)
plot(x); % Plot the noisy audio signal
figure (2)
plot(y); % plot the audio
x_sampled = resample(x,3,1); % sampling frequency to 48 kHz
audiowrite('Noisy_resampled.wav',x_sampled, Fs); % Write the resampled audio to a file
[y, Fs] = audioread('Noisy_resampled.wav'); % Read the resampled audio
sound(y, Fs);
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Respuestas (1)
Richard Burnside
el 14 de Jun. de 2023
Editada: Richard Burnside
el 14 de Jun. de 2023
Probably exceeding the audiowrite range for the data type. ML Docs shows:
Data Type of Y Valid Range for Y
-----------------------------------
uint8 0 <= Y <= 255
int16 -32768 <= Y <= +32767
int32 -2^31 <= Y <= 2^31-1
single -1.0 <= Y <= +1.0
double -1.0 <= Y <= +1.0
"Data beyond the valid range is clipped."
You could try a scalar attenuation of your data.
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