Jim G Ryan

Title: Jim G Ryan: Innovator in Microphone and Hearing Instrument Technologies

Introduction

Jim G Ryan is a notable inventor based in Ottawa, Canada. He has made significant contributions to the fields of audio technology and hearing instruments. With a total of 3 patents, his work has had a lasting impact on the industry.

Latest Patents

One of Jim's latest patents is a low-noise directional microphone system. This innovative system includes a front microphone, a rear microphone, a low-noise phase-shifting circuit, and a summation circuit. The front microphone generates a front microphone signal, while the rear microphone generates a rear microphone signal. The low-noise phase-shifting circuit implements a frequency-dependent phase difference between these signals to create a controlled loss in directional gain and maintain a maximum level of noise amplification over a predetermined frequency band. The summation circuit then combines the front and rear microphone signals to generate a directional microphone signal.

Another significant patent is a system and method for detecting the insertion or removal of a hearing instrument from the ear canal. This hearing instrument system includes first and second acoustic transducers, first and second level detection circuitry, and signal processing circuitry. The first acoustic transducer receives a first electrical signal and radiates acoustic energy, while the second acoustic transducer receives this radiated acoustic energy and generates a second electrical signal. The first level detection circuitry generates a first intensity signal, and the second level detection circuitry generates a second intensity signal. The signal processing circuitry compares these intensity signals to determine whether the hearing instrument is inserted or removed from the space.

Career Highlights

Jim has worked with several companies throughout his career, including Sound Design Technologies, Ltd. and Gennum Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in audio technology.

Collaborations

Jim has collaborated with notable individuals in his field, including Brian D Csermak and Stephen W Armstrong. These collaborations have contributed to the advancement of his projects and innovations.

Conclusion

Jim G Ryan is a distinguished inventor whose work in microphone and hearing instrument technologies has made a significant impact. His innovative patents and collaborations reflect his dedication to advancing audio technology.