Barry Michael Cheetham

Title: The Innovations of Barry Michael Cheetham

Introduction

Barry Michael Cheetham is a notable inventor based in Liverpool, GB. He has made significant contributions to the field of audio technology, particularly in noise reduction and polyphonic coding systems. With a total of 2 patents to his name, Cheetham's work has had a lasting impact on audio conferencing systems.

Latest Patents

Cheetham's latest patents include a "Noise reduction apparatus using spectral subtraction or scaling" and a "Polyphonic coding" system. The polyphonic coding system is designed for audioconferencing, where input left and right channels are time-aligned by variable delay stages. This system utilizes a delay calculator to derive the maximum cross-correlation value, allowing for high-quality transmission of the sum signal while reconstructing the difference signal at the decoder using an adaptive filter. The complexity of the adaptive filter is reduced through pre-whitening, enhancing the overall performance of the audio system.

Career Highlights

Cheetham has had a distinguished career at British Telecommunications Public Limited Company, where he has been instrumental in developing innovative audio technologies. His expertise in noise reduction and audio coding has positioned him as a key figure in the telecommunications industry.

Collaborations

Throughout his career, Cheetham has collaborated with notable colleagues such as Edward Munday and Philip Mark Crozier. These collaborations have further enriched his work and contributed to the advancements in audio technology.

Conclusion

Barry Michael Cheetham's contributions to audio technology through his patents and career at British Telecommunications Public Limited Company highlight his innovative spirit and dedication to improving communication systems. His work continues to influence the field of audioconferencing and noise reduction technologies.