Method and system for increasing audio perceptual tone alerts

Data processing: speech signal processing – linguistics – language – Speech signal processing – Psychoacoustic

Reexamination Certificate

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Reexamination Certificate

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07089176

ABSTRACT:
A method, system and computer readable medium for increasing the audio perceptual loudness includes shifting at least one frequency of a first audio signal to create a second audio signal so as to increase the audio perceptual loudness. The power level of the second audio signal is not more than a power level of the first audio signal. The method also includes generating high-audio perceptual loudness tone alert sequences based on psychoacoustic and audiometric data. It further includes acquiring a listener's threshold audio profile; adding the listener's audio profile to the loudness sensitivity curve for producing the listener's tonal sensitivity curve; determining a required dB scaling for critical band tones from the listener's tonal sensitivity curve; normalizing the tonal sensitivity curve for creating a decibel curve; selecting a frequency range of the tones by using the tonal sensitivity curve; and spacing the sequence of tones along a critical band scale.

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patent: 6104822 (2000-08-01), Melanson et al.
patent: 2003/0165247 (2003-09-01), Bantz et al.
Beranek, Acoustics, 1954, McGraw-Hill Book Company, Inc., pp. 398-403.

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