My undergraduate thesis on generative models for unsupervised speech time-scale modification, under the joint supervision of Prof. Prasanta Kumar Ghosh (SPIRE Lab, IISc) and Prof. Niteesh Sahni (SNIoE), won 2nd Prize for Best UG Thesis. I document this work as detailed technical notes rather than leaving it in notebooks, posted on my Research page (DDPMs, VAEs, GANs, contrastive learning).