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Elevating Speech Clarity: Harnessing Inaudible Low-Frequency Sounds

This study explores using unintelligible low-frequency sounds to enhance speech intelligibility. Researchers investigated different methods of incorporating low-frequency components to improve speech understanding in challenging listening environments. By introducing competing voices and simulating various implant scenarios, the study provides insights into optimizing speech clarity for individuals with hearing impairments. The findings suggest that leveraging low-frequency signals alongside traditional speech processing techniques can offer significant benefits in communication efficiency and comprehension. The results pave the way for innovative strategies to enhance speech perception in noisy or complex acoustic settings.

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Elevating Speech Clarity: Harnessing Inaudible Low-Frequency Sounds

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  1. LOWS ARE THE NEW HIGHS: IMPROVING SPEECH INTELLIGIBILITY WITH UNINTELLIGIBLE LOW-FREQUENCY SOUNDSJanice E. Chang1, John Y. Bai2, Martin Marsala2, Helen E. Cullington2, and Fan-Gang Zeng21Department of Bioengineering, University of California, Berkeley, CA, USA2Hearing and Speech Research Laboratory, University of California, Irvine, CA, USA A. Original HINT: "A boy fell from the window." • A. Original HINT: "A boy fell from the window." D. High-passed original mixed sound. D. Low-passed original mixed sound. B. Competing voice: "A large size in stockings is hard to sell." E. Four-channel implant simulation of the mixed sound above 500 Hz. B. Competing voice: "A pot of tea helps to pass the evening." E. Four-channel implant simulation of the mixed sound below 4000 Hz. C. Original signal + competing voice (SNR=0 dB) F. Combined low-pass and implant simulation. C. Original signal + competing voice (SNR=0 dB) F. Combined high-pass and implant simulation.

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