I am familiar with the instrument and technology. US 6,925,880 Claim 18 applying energy to a surface of the drumhead to cause the drumhead to emit acoustic energy therefrom; receiving acoustic energy emitted from the drumhead using moveable acoustic sensor positioned above the surface of the drumhead and in proximity to a tightening bolt of the drum without substantial interference from other tightening bolts of the drum; converting the acoustic energy received by the acoustic sensor into a signal corresponding to an acoustic property of the drumhead; and This is a method claim that is not bound to any specific embodiment.
Even though this patent is labeled Drum-Set Tuner, it is still a method patent.
Version 8 adds some nice new editing features that "get it," a subscription-based purchase option, and some rather expensive online storage. ACDSee is a now available on a subscription basis. You manage it with your ACDSee account. ACDSee Pro 8 fulfills four major functions: