I had the phase vocoder based on an STFT working on a monophonic signal last week. I tried playing a snipper of a polyphonic song that may be used while running. I used the intro of “Eye of the Tiger”. This did not directly work. The main problem was that the song’s signal as an array was too long to play on MatLab online. Despite having been able to complete my advanced signals classes with the online version, it seemed necessary for me to download the software on my laptop so that I could ACTUALLY test songs. I started this process, but ran into issues here because my mac is 8GB and has been low on storage/disk space for 3 years now. I spent a few hours to moving large folders and files online but still did not have enough space for the software. As a result, I was unable to download the software program. However, I have a new laptop coming in within the week. I will be able to test full songs on matlab on that.
In the meantime, I still wanted to make relevant progress this week. I passed a smaller snippet of the polyphonic signal through the phase vocoder based on stft.
I also deconstructed & reconstructed a signal with DTCWT. I did this with DWT last week. However, DWT results in shift invariance post reconstruction. DTCWT incurs a drastically lesser shift invariance. I tested this out to find this concept to be true.