MATLAB is a technical software package that can be used for signal processing and analysis. A common procedure in signal analysis is peak detection, or finding local maxima – values larger than adjacent data points – within a noisy signal. It is usually necessary to limit peak detection to local maxima of a certain width – duration when the signal is in the time domain – as well as a certain height or magnitude. my_signal = sin(0:0.1:10) + rand(1,101); [peak_value, peak_location] = findpeaks(my_signal); [peak_value, peak_location] = findpeaks(my_signal,‘minpeakheight’,2.5); [peak_value, peak_location] = findpeaks(my_signal,‘minpeakdistance’,5); [peak_value, peak_location] = findpeaks(my_signal,’threshold’,0.5); [peak_value, peak_location] = findpeaks(my_signal,’npeaks’,5); [peak_value, peak_location] = findpeaks(my_signal,‘sortstr’,‘ascend’); Writer Bio
