It’s been almost a year since I put up my last tutorial about tone detection using the Teager Kaiser Energy Operator. I have finally written something up for part two here. Life with a young family has been quite busy for me. If there is enough interest in the TKEO stuff, I may write a part 3 showing a fixed point version (another year from now?).
Let me know if there are any problems with formatting in the code (something that always seems to be a problem). Copying the code is easy. If you put your mouse pointer over any of the code listings, a number of symbols will be shown at the top right. One of these will allow the code to be copied to the clipboard.