Method and apparatus for classifying sound signals
First Claim
1. A method for assigning at least one sound class to a sound signal, characterized in that it comprises the following steps:
- dividing the sound signal into temporal segments (T) having a specific duration, extracting the frequency parameters of the sound signal in each of the temporal segments (T), by determining a series of values of the frequency spectrum in a frequency range between a minimum frequency and a maximum frequency, assembling the parameters in time windows (F) having a specific duration greater than the duration of the temporal segments (T), extracting from each time window (F), characteristic components, and on the basis of the extracted characteristic components and using a classifier, identifying the sound class of the time windows (F) of the sound signal.
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Abstract
The invention concerns a method for assigning at least one sound class to a sound signal, characterized in that it comprises the following steps: dividing the sound signal into temporal segments having a specific duration, extracting the frequency parameters of the sound signal in each of the temporal segments, by determining a series of values of the frequency spectrum in a frequency range between a minimum frequency and a maximum frequency, assembling the parameters in time windows having a specific duration greater than the duration of the temporal segments, extracting from each time window, characteristic components, and on the basis of the extracted characteristic components and using a classifier, identifying the sound class of the time windows of the sound signal.
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Citations
33 Claims
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1. A method for assigning at least one sound class to a sound signal, characterized in that it comprises the following steps:
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dividing the sound signal into temporal segments (T) having a specific duration, extracting the frequency parameters of the sound signal in each of the temporal segments (T), by determining a series of values of the frequency spectrum in a frequency range between a minimum frequency and a maximum frequency, assembling the parameters in time windows (F) having a specific duration greater than the duration of the temporal segments (T), extracting from each time window (F), characteristic components, and on the basis of the extracted characteristic components and using a classifier, identifying the sound class of the time windows (F) of the sound signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An apparatus for assigning at least one sound class to a sound signal, characterized in that it comprises:
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means (10) for dividing the sound signal (S) into temporal segments (T) having a specific duration, means (20) for extracting frequency parameters of the sound signal into each of the temporal segments (T), means (30) for assembling the frequency parameters into time windows (F) having a specific duration greater than the duration of the temporal segments, means (40) for extracting from each time window (F), characteristic components, and means (60) for identifying the sound class of the time windows (F) of the sound signal on the basis of the characteristic components extracted and using a classifier. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification