Sound Technique Systems, LLC

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800 East Leigh Street Lab 210 Virginia Biotechnology Research Park Richmond and Arlington

			Dr Martin L. Lenhardt 24 years Prof. Otolaryngology 6 years Prof. Biomedical Engineering 3 years V.P. Sound Technique Systems

Sound Technique Systems, LLC

Our People


	Martin Lenhardt, Ph.D., Au.D. - Bioacoustics* Bob Guinta - Hearing device marketing and FDA Doug Richards, Ph.D. - Bioacoustics * Alan G. Madsen - DSP Firmware / Software* Ronald David, M.D. - Neurology* James Genova, Ph.D. - Sonar, Radar Tim Cameron, Ph.D. - Mechanical Engineering*

		*STS and VCU

STS high noise speech perception

	710 Denbigh Boulevard, Suite 2C Newport News

	Sound Technique Systems


	Modulation of speech with high sonic carriers results in intelligible speech when combined with other processing Analog product depicted in Science Magazine, 1991



		145 dBA SPL

More noise exposure; more hearing loss less comprehension in noise; more errors more noise exposure; more hearing loss.....


Upper Trace: Natural speech waveform Lower Trace: STS modulated waveform	High frequency enhancement rapid filtering and modulating algorithms consonant gain boost ~8dB+ little intermodulary distortion (< .01 %) power ~110 dB re: 1 µN

Page Content and Design : Dr Martin L. Lenhardt
WebMaster: Alan G. Madsen
Last update: Sunday, February 3, 2002