I'm very much a sound and voice oriented guy. Moaning, groaning and talking out loud adds to my pleasure when masturbating or making love. One sound technique I use is this:
Masturbate any way you like, and record the sound of it on tape. Either just your breathing and groaning, or verbally describing what you're doing and experiencing. Make your recordings for several weeks in a row. Then, one day, take your time and treat yourself to a long jack-off session, as you play the tape and listen to one hour of your own orgasms. Pump up the volume!