Tuner-UWP

Guitar tuner for Universal Windows Platform, created using C++/WinRT and FFTW3 library.

Solution consists of two main parts:

• DSP project with utilities allowing window and FIR filter generation
• Tuner project with GUI tuner application

Notes

• During the first app launch, loading may take a while. This is due to the FFTW best peformant algorithm calculation. The result of these calculations is saved locally and loaded in the next app launches.
• Pitch detection is performed using a Harmonic Product Spectrum algorithm.
• When CREATE_MATLAB_PLOTS macro is defined in PitchAnalyzer.h, filter_log.m and analysis_log.m Matlab files are generated to application's LocalState directory allowing further inspection.
• Best way to find these files is to search for them in C:\Users\username\AppData (AppData is a hidden folder)
• Tuner project's compilation is dependant on DSP project.

Screenshots

Several views of the main page:

Generated FIR filter based on Blackman-Harris window (plot from auto-generated filter_log.m Matlab file using CREATE_MATLAB_PLOTS macro):

FIR filter closeup:

Example of Matlab plot from auto-generated analysis_log.m Matlab file using CREATE_MATLAB_PLOTS macro, screenshot shows the signal after applying FIR filter, taken while playing high E guitar string:

Filtered signal closeup:

Author

• Borys Chyliński - Chylynsky

Credits

• Icons made by Freepik from Flaticon