Trying to solve this: https://scratch.mit.edu/discuss/post/8280345/ Warning: loud sounds can happen when the project is first started. Also if "Gain" is increased or "stabilizer" is decreased it can quickly get VERY LOUD -- After reading lots of things on the internet about Line Spectral Pairs, I made this project It sounds better but I still don't understand what it says Here is my previous attempt: https://scratch.mit.edu/projects/1110802714/ I spent too much time on this, I've read all of these: https://en.wikipedia.org/wiki/Line_spectral_pairs https://en.wikipedia.org/wiki/Linear_predictive_coding https://en.wikipedia.org/wiki/Linear_prediction https://speex.org/docs/manual/speex-manual/node9.html https://www.lintech.org/webpapers/lsp_paper.pdf (didn't read fully) Lots of code at https://github.com/praat/praat/blob/master/... (because I didn't want to install things) but the most important are LPC_Frame_initFromLineSpectralFrequencies_Frame() in https://github.com/praat/praat/blob/master/LPC/LPC_and_LineSpectralFrequencies.cpp and LPC_Frame_into_Spectrum() in https://github.com/praat/praat/blob/master/LPC/LPC_to_Spectrum.cpp I still don't fully understand how line spectral pairs work, but the graph looks similar to the one in the pdf so I couldn't have messed it up too much