How to interpret spectogram?

 I'm using spectrogram to plot time vs frequency representation of STFT signal? Basically How to detect peaks in spectrogram?

Answer 1

[Stalin Samuel]

findpeaks

[priyankah katkar]

Stalin Thanks for reply. but my intention is to figure out maximum peak value from spectrogram? How can I do it? findpeaks() function gives peak values and its location. I want maximum peak magnitude.

[Image Analyst]

Try imregionalmax().

Answer 2

[Star Strider]

The findpeaks function will not work with spectrogram, since it only works with vectors. You have to threshold the absolute value of the spectrogram function. See this thread for an example.

Answer 3

[Image Analyst]

Looks like you'll have to use image analysis. Threshold the image. Might be beneficial to do some noise reduction first.