Circuits to process music digitally with high fidelity

Abstract

The present invention provides a complementary bifurcated circuit to process and optimize music digitally with high fidelity yet with wireless elements. In a particular embodiment, an audio transducer in close proximity to a musical instrument or vocalist's mouth transforms audible music to analog electrical signals, which are digitized and then filtered to remove external noise at the frequencies of alternating current as well as internally generated noise. A FPGA encoder optimizes the signal's latency and formats the signal for wireless transmission, which is then accomplished with a transmitter and receiver. A transmitter control interface programs one or more of the digital encoder, digital processor, FPGA encoder and wireless transmitter. The signal received wirelessly at a remote location is stripped of formatting by a FPGA decoder, corrected to remove nonlinearities in amplification, further optimized for sound latency, and amplified as needed to drive an external audio apparatus such as a loud speaker, mixing board, or professional recording device. A receiver control interface programs one or more of a receiver, FPGA decoder, digital audio CODEC, and digital audio amplifier. The invention is particularly well suited for stringed instruments but is not so limited.