How can i digitally add external noise(street noise) to my input speech signal?

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Bisma Waheed
Bisma Waheed am 7 Mai 2018
I am working on a speaker recognition system. I am working on clean speech and then added AWGN noise at different SNR levels using the command:
snr=25;
x = awgn(s,snr,'measured');
But i want to add street noise to my samples that i recorded myself.

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