Video of spectrogram with playback barline and synchronized audio file.

I can get a percentage difference between levels (dB).Video 1. Thanks for the reply, I'll try your suggested approach I should've mentioned that we're just observing the repeatability of just open strings, no songs. That's not going to give you a numerical value but differences should be obvious. The best solution is probably to put one recording in the left channel and the other in the right channel and listen. But it practice it's not that easy and the difference between two recordings is also 3-dimensional. If you play a recording backwards it's going to have the same spectrogram, etc., etc.Ī spectrogram (or FFT analysis) adds the dimension of time and theoretically you could tell if the right notes were played at the right time with the right intensity. Pink noise can make a 'nice spectrum' but you wouldn't want to listen to it. It's virtually impossible to judge the quality of a recording by looking at the spectrum, waveform, or spectrogram.

You're mostly going to see the spectrum of a violin (which probably looks similar to the spectrum of an acoustic guitar.) The spectrums will be very-similar if the song is played in a different key or even if a different song is played. You could use Excel or any other program to apply whatever form of analysis that you want on the raw data - it depends what kind of analysis you want to perform.įor context I’m trying to build a robot to play the violin and repeatability is important. Code: Select all Frequency (Hz) Level (dB)

Audacity spectrogram