could someone explain to me please, why increasing the value of 'snr' parameter of awgn() function (here is the doc) results in the outcoming signal being closer to the original (less interrupted). As far as I know, the bigger the SNR, the more interrupted the signal should be. Even the parameter says "snr — Signal-to-noise ratio Signal-to-noise ratio in dB, specified as a scalar."
If the noise is 20dB, the resulting signal should be worse than in case of 10dB noise, isn't it?
Could someone explain why does it work this way?