Here you can find some tutorial presentations compiled by me. I've tried my level best to acknowledge the original source of materials as part of references, but it is quite possible that I could have missed some of them, Incase if you notice such a lacuna kindly do inform me and I'll only be too happy to acknowledge them.  

1. Floating point to fixed point conversion
This presentation is particularly useful to those who are working in speech codecs domain.

2. Understanding series of tutorials

Pre-requisites: Before plunging into compression its important that you are aware of certain basic concepts. I've tried to list these pre-requisites in these slides: This set of foils are not tutorial in nature instead they just list the relevant topics with relevant questions.
 

Image Compression Technologies: This set of slides compile various relevant concepts in image compression from various sources.

Video Compression Technologies: This set of slides compile various relevant concepts in video compression from various sources.

 Audio Compression Technologies: This set of slides compile various relevant concepts in audio compression from various sources.

Speech Compression Technologies: This set of slides compile various relevant concepts in speech compression from various sources. {this set of slides is still very incomplete) 

Resource pages:

Video compression standards