Sound data acquisition means acquires, from a sound input device, sound data representing a sound signal. A first capacitor electrode is formed within individual openings in the support material. The alternate path may be periodically updated. Further, the nozzle assemblies according to various non-limiting embodiments disclosed herein may be heated, and may be self-inspecting. In particular, the loop length, the number of bridge taps and the length of bridged taps can be estimated by comparing a measured frequency domain channel impulse response of the transmission line to a model of a loop that is comprised of multiple sections and multiple bridge taps.