US 6,675,114 B2 · Method for evaluating sound and system for carrying out the same

Abstract

A system and method (and storage media) for identifying the category of the source noise and sound by using the physical factors derived from the autocorrelation function (ACF) and the interaural crosscorrelation function (IACF) which are ever changing in the time domain based on the model of human auditory brain function system. A method for evaluating a sound comprises the steps of: using the sound recorder to capture and record the acoustic signal; calculating the ACF from the acoustic signal using a CPU; calculating ACF factors extracted from the calculated ACF using the CPU; and identifying the kinds of the noise based on the ACF factors. Thereby the unknown noise source can be identified what it is (such as automobile noise, and factory noise), and can be identified its type such as type of cars or type of machines.

Claims10

Dependent claims

A method for evaluating a sound, comprising the steps of:

capturing the sound and converting the captured sound into an acoustic signal;
calculating an autocorrelation function ACF from the acoustic signal with the aid of computing means;
calculating autocorrelation function factors from the calculated autocorrelation function ACF with aid of the computing means;
and
evaluating the sound based on the ACF factors and a preestablished database with the aid of the computing means, said database storing at least one of the following data;
tone data associating tones with ACF factors, prosodic data associating prosodic elements with ACF factors and subjective evaluation data associating subjective evaluation values with ACF factors.

3 more elements

A system for evaluating a sound comprising:

sound capturing means for capturing the sound and converting the captured sound into an acoustic signal;
ACF calculating means for calculating an autocorrelation function ACF from the acoustic sign;
ACF factor calculating means for calculating autocorrelation function factors from the calculated autocorrelation function ACF;
and
evaluating means for evaluating the sound based on the ACF factors and a preestablished database, said database storing at least one of the following data;
tone data associating tones with ACF factors, prosodic data associating prosodic elements with ACF factors and subjective evaluation data associating subjective evaluation values with ACF facts.

3 more elements

Dependencies are inferred from the claim text.

Method for evaluating sound and system for carrying out the same

Life of this patent

Method for evaluating sound and system for carrying out the same

Life of this patent

Abstract

Claims10