How can I use HTK with my own data in text/matlab/binary format?

You need to convert your data to the HTK parameter format (you can eiter use the USER parameter kind or pretend they are MFCC or similar). Typically this involves writing a small programm that does the conversion.---------HTK FAQ

Anybody can explain it in detail?

--- (Edited on 4/2/2012 9:25 am [GMT-0500] by zoezheng) ---