Classification of speech and music using zero crossing
OwnerManoj Singhalinventor
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Abstract
Disclosed herein is a method and system for classifying an audio signal. The method may be accomplished by using a low pass filter to prevent transmission of audio components having a frequency greater than a predetermined frequency. The system may also be provided with a device for selecting a further reduced number of audio components for analysis. Analysis of the audio signal may be performed by a zero point counter for counting and recording zero point transitions encountered in analysis of the audio signal. The system may also include a comparator for comparing a result of analysis to a threshold value and classifying the audio signal based upon comparison of the result of analysis and the threshold value.
Claims24
A method for classifying an audio signal, the method comprising:
- receiving an audio signal to be classified;
- analyzing selected audio signal components;
- recording a result of analysis of the selected audio signal components;
- comparing the recorded result of analysis to a threshold value;
- and
- classifying the audio signal based upon comparison of the recorded result of analysis and the threshold value.
An apparatus for classifying an audio signal, the apparatus comprising:
- a zero point counter for counting and recording zero point transitions encountered in analysis of the selected audio signal components;
- and
- a comparator for comparing a recorded result of analysis to a threshold value and classifying the audio signal based upon comparison of the recorded result of analysis and the threshold value.
Dependencies are inferred from the claim text.