Or do a cleverer multi-peak analysis and guess the fundamental freq from all the peaks the software is sensing. frequency (may bump up the small first freqs.) Maybe analyze the log of the FFT components amplitude vs. I need to improve the peak detection technique. Instruments with a low-intensity first harmonic and richer 2nd-3rd harmonics may trick the tuner into incorrect notes. Ignore that error and re-run (it should work fine by then)ġ) The tuner detects the musical note of the sounds you're producing by doing a Fast Fourier transform of the sound stream from your microphone and analyzing the frequency peaks. THat seems to happen because the sound card takes a while to initialize the recorder and send sounds to the Interpreter. Otherwise, the interpreter would crash on you.ģ) There's the chance that the first time you run the tuner on your interpreter it may crash as soon as starts receiving sounds. Plug an external mic in before opening the interpreter and running the code. If using a desktop PC without a built-in microphone (or a laptop or all-in-one with a disabled mic), (or the voice of the singer whose range you want to determine), thus:ġ) make sure your sound card is properly installed on your pc (that is, you have the right drivers and it's working)Ģ) make also sure that your pc has a microphone and it's enabled and can perceive sounds. IMPORTANT: This tuner makes use of your PC's sound card to listen to the instruments you want to tune Run the "tunerFrontEnd.m" script from the interpreter's command window.Īnd follow the prompts on screen as you use the software. (or the other resource files I uploaded) for some background on what lies behind the tuner. Please have a look at the slideshow (fat ODP file) of the presentation I made when bringing the tuner to the class I never tried executing in Octave though, I cannot guarantee that some GUI components may work properly. It relies on "audioRecorder" objects, which exist in both interpreters. You may need a Matlab interpreter (Matlab (R) or GNU-Octave) to run it, This tuner code has been written in Matlab. I developed this code as the term project for a signal processing class (CE 5984) at Virginia Tech. Matlab-based music instrument tuner and voice range calculator.
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