Why is the threshold value of peak detection is 10^-4?

 threshold = 1e-4;
           [f0, loc] = pitchdet(frame, threshold);

function [f0, loc] = pitchdet(frame, threshold)

dt=1/(length(frame)-1);

t=[0:dt:1];

[maxs,mins]=peakdet(frame,threshold,t);

allpitchs = [maxs;mins];

allpitchs = sortrows(allpitchs,1);

loc = allpitchs(:,1);

f0 = allpitchs(:,2);

[jonas]

My guess, this line:

threshold = 1e-4;

[May Thu]

Yes, I don't know is why the peak threshold value is 1e-4?

[Image Analyst]

Probably because that was a threshold value that gave good results to the author for the data he/she was using. You can change it to adapt it to your data if you want.

[May Thu]

Thank You

Answer 1

[madhan ravi]

1e-4 ==> 10^-4

[madhan ravi]

1e-4==10^-4

try it in command window

both are the same value but the notations used are different

[May Thu]

I know that 1e-4==10^-4==0.00001. But what I don't know is why this value is selected as threshold value?