Abstract: A microphone system includes an elongated portion having a proximal end and a distal end defining a channel therethrough. The elongated portion comprises at least one relatively rigid section and at least one relatively flexible section. In addition, a base may be affixed to the proximal end of the elongated portion and a microphone may be affixed to the distal end of the elongated portion.

Abstract: A piano microphone apparatus configured to position at least one microphone within a sound cavity of a piano may comprise at least one piano interface configured to contact a case of a piano to suspend the microphone within the sound cavity of the piano. The piano microphone apparatus may also comprise at least one protruding member configured to receive a microphone and to adjustably position the microphone relative to at least one of the plurality of strings or soundboard. The length of the piano microphone apparatus may also be adjustable based on at least one dimension of the sound cavity.

Abstract: An improved expanding system is described for enhancing transmitted or recorded audio signals previously processed by anyone of several nonlinear amplifying techniques. The system is designed to divide the audio signal received into substantially discrete frequency bands and each band is separately expanded, independently of the other bands, so as to minimize "breathing" and "pumping".