compute peak to peak ratio

[preethi19]

i need to compute a signal's peak to peak ratio..... i have a doubt... do we calculate a signal's Peak to peak ratio in time or freq domain.... and ok say for a sine wave i can understand how to calculate the ratio.... like from postive to negative peak... but say its a signal with waveform like wer the waveform is just in the postive domain wer the other peak reaches near 0 but not to the negative peak... then how to calculate for this??? pls help me.. sorry for a very basic question... thank u

 

[preethi19]

Also is der a way in matlab to compute peak to peak ratio ofa signal without having to do it manually... thank u

 

[D.A.(Tony)Stewart]

Consult Web
**broken link removed**
https://en.m.wikipedia.org/wiki/Root_mean_square#RMS_of_common_waveforms