Michael E. Spencer is a notable inventor based in Escondido, California. He has made significant contributions to the field of audio technology, particularly in the development of parametric loudspeaker systems. With a total of six patents to his name, Spencer's work focuses on enhancing audio signal processing and amplification.

Latest Patents

One of Spencer's latest patents is titled "Modulator processing for a parametric speaker system." This invention addresses the non-linearity of the parametric process in air when driving sound at various saturation levels. The system utilizes improved modulators that offer ideal linearity while maintaining a lower carrier frequency. By eliminating some or all of the lower sideband, the design reduces the carrier frequency without producing audible sideband frequencies. This innovation results in greater translation efficiency and output capability before reaching the saturation limit of air.

Another significant patent is the "Modulator-amplifier," which describes a method and device for frequency shifting and amplifying audio signals in parametric loudspeaker systems. This method involves receiving an input audio signal and creating a reference signal for comparison. The resulting compared product signal is sent to a switching power stage, where nonlinear preprocessing is performed. This allows for effective modulation and amplification of the audio signal, enhancing the overall performance of the loudspeaker system.

Career Highlights

Michael E. Spencer is currently associated with American Technology Corporation, where he continues to innovate in audio technology. His work has been instrumental in advancing the capabilities of parametric loudspeakers, making them more efficient and effective in various applications.

Collaborations

Throughout his career, Spencer has collaborated with notable colleagues, including James J. Croft III and Joseph O. Norris. These partnerships have contributed to the development of groundbreaking technologies in the audio field.

Conclusion

Michael E. Spencer's contributions to parametric loudspeaker technology exemplify his innovative spirit and dedication to enhancing audio experiences. His patents reflect a deep understanding of audio signal processing, making significant strides in the industry.

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