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

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May Thu
May Thu 2018-10-27
评论： May Thu 2018-10-27
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);
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Image Analyst
Image Analyst 2018-10-27
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.

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回答（1 个）

madhan ravi
madhan ravi 2018-10-27
1e-4 ==> 10^-4
  2 个评论
madhan ravi
madhan ravi 2018-10-27
编辑：madhan ravi 2018-10-27
1e-4==10^-4
try it in command window
both are the same value but the notations used are different
May Thu
May Thu 2018-10-27
I know that 1e-4==10^-4==0.00001. But what I don't know is why this value is selected as threshold value?

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