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Post-Processing Library<br />

SNR<br />

SNR<br />

Eldo built-in DSP function<br />

Calculates the Signal to Noise Ratio of a noisy wave by using a specific frequency list.<br />

Usage<br />

set out_value [snr $wv_in $fmin $fmax $freq_list]<br />

Arguments<br />

• wv_in<br />

Input waveform the function is acting upon. If wv_in is neither a complex waveform nor a<br />

magnitude then an error is generated. If wv_in is a complex waveform, it is automatically<br />

transformed into magnitude.<br />

• fmin, fmax<br />

Frequency band that should be taken for the computation.<br />

• freq_list<br />

List of frequencies which should be used in the computation.<br />

Return Values<br />

out_value is the signal to noise ratio, in dB.<br />

1232<br />

Eldo® User's Manual, 15.3

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