[MATLAB]

I have a GUI in MATLAB that acts as an audio processor. So far it can load, play, stop audio files. This is what I have so far (screenshots). I need the code in MATLAB for an equalizer with 8 frequency bands with sliders (+20 dB) that filters and sum output of all filters (split audio spectrum into 8 parts). I then have to make a plot of equalizer gain in a GUI axis. Thanks

Load axes1 Play Stop Load axes1 Play Stop