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Add Noise

07 Jul 2011 (Updated 14 Jul 2011)

Add noise to a signal at a prescribed SNR level.

File Information
Description	Takes two signal vectors as inputs and produces a mixture signal at a desired SNR level (dB). Includes various examples.
MATLAB release	MATLAB 7.10 (2010a)

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Everyone's Tags	add noise, db, mix, noise, signal processing, signal to noise ratio, snr
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Comments and Ratings (1)
14 Aug 2011	Neo

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Updates

08 Jul 2011

Updated icon transparency on package description.

14 Jul 2011

Added:

randi = @(n)( round(1+(n-1)*rand) );

to support older MATLAB releases.

Relaxed sanity check to:

assert( abs(SNR(signal,noisy)-snr) < 1E10*eps(snr) );