Abstract: A microphone adapter connects to and receives analog audio input from a microphone and an external music source, such as a smart phone. The microphone audio input signal and external music audio input signal are converted to digital signals and multiplexed into a digital wireless signal that may be transmitted directly to multiple speakers. The digital wireless signals are uncompressed, high definition digital audio signals transmitted in the 2.4 GHz band with a range of several hundred feet. The microphone adapter enables user to easily establish a pop-up public address system without the need for speaker cables, sound boards, mixers, and the like.

Abstract: A microphone adapter connects to and receives analog audio input from a microphone and an external music source, such as a smart phone. The microphone audio input signal and external music audio input signal are converted to digital signals and multiplexed into a digital wireless signal that may be transmitted directly to multiple speakers. The digital wireless signals are uncompressed, high definition digital audio signals transmitted in the 2.4 GHz band with a range of several hundred feet. The microphone adapter enables user to easily establish a pop-up public address system without the need for speaker cables, sound boards, mixers, and the like.

Abstract: Multi-chip modules are designed for use in transmitters and receivers used in high-fidelity wireless digital audio networks. The modules may be incorporated into a variety of devices, including microphones, transmitters, instruments, speakers, amplifiers, audio boards, and similar devices. Multi-chip modules incorporate features to accommodate a plurality of audio input formats and wireless network types, including a proprietary, wireless audio network. A boot loader, in conjunction with user-selectable pins or switches, allows a multi-chip module to be configured at startup based on code that is stored in non-volatile memory.

Abstract: The invention provides an electronic method for assessing student skills on a stringed musical instrument, based on comparing the digital signature of an expert template sound to the digital signature of a student's attempt to replicate the template on the stringed instrument. In particular the method employs in sequential series an audio input device, an analog-to-digital converter, an audio correlation decoder, a digital-to-analog converter, and an audio output device; in certain embodiments they are all under the control of the same central control processor, which also has access to a first addressable data memory including unprocessed emulations from a student, a logic filter circuit element, a second addressable data memory including emulations from the student that have been filtered to remove background noise and other extraneous elements, and an addressable data memory including expert templates for incremental components of stringed musical performance.

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.