Colored Noise: Set Duration

Question

Nycholas Maia 2017-12-31

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/375057-colored-noise-set-duration

编辑： Tanmoy Sil 2023-2-15

采纳的回答： Nycholas Maia

在 MATLAB Online 中打开

I would like to generate pink/white/blue/purple noise and set the duration of this signal. I'm using this code:

signal = dsp.ColoredNoise('Color','pink','SamplesPerFrame', 1024);

Link: https://www.mathworks.com/help/dsp/ref/dsp.colorednoise-system-object.html

In my understanding, the 'SamplesPerFrame' variable does not indicate the duration of the generated signal, but rather the amount of samples used to obtain the desired spectral distribution (white, pink, etc ...).

How can I generate a pink noise using 1024 samples per frame (spectral distribution) and also have 20 seconds of audio duration?

I'm using:

duration = 20; % seconds
Fs = 44100; % Sample Rate (Hz)

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Answer 1

Nycholas Maia 2018-1-4

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/375057-colored-noise-set-duration#answer_298755

I was wrong. The 'SamplesPerFrame' parameter is the length of the signal. Sorry...

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Tanmoy Sil 2023-2-15

编辑：Tanmoy Sil 2023-2-15

hello did you figure out how to set the sampling rate? its very confusing with the matlab parameters. i want to fs to be 250 hz and have 20s of desired output.

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