Method and device for determining the voice quality degradation of a signal
First Claim
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1. Method for determining the voice or speech quality degradation of a signal, without using any reference or initial signal, said method comprising the steps of:
- decomposing the signal to be analysed by means of a segmentation algorithm, then applying at least one metric to the resulting decomposed signal and finally evaluating the signal degradation, while before subjecting the signal to be analysed to the temporal segmentation algorithm, sampling said signal, calculating energy related quantities for said signal samples, thresholding said plurality of calculated quantities in order to identify the speech, silence and/or noise sequences or periods of said signal, and determining the average energy level of noise during the sequences or periods of the signal carrying no speech or silence sequences or periods, in order to perform a first signal degradation evaluation.
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Abstract
The present invention concerns a method and a device for determining the voice quality degradation of a signal. Method for determining the voice or speech quality degradation of a signal, without using any reference or initial signal, wherein it mainly consists in decomposing the signal to be analysed by means of a segmentation algorithm, then applying at least one metric to the resulting decomposed signal and finally evaluating the signal degradation.
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13 Claims
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1. Method for determining the voice or speech quality degradation of a signal, without using any reference or initial signal, said method comprising the steps of:
- decomposing the signal to be analysed by means of a segmentation algorithm, then applying at least one metric to the resulting decomposed signal and finally evaluating the signal degradation, while before subjecting the signal to be analysed to the temporal segmentation algorithm, sampling said signal, calculating energy related quantities for said signal samples, thresholding said plurality of calculated quantities in order to identify the speech, silence and/or noise sequences or periods of said signal, and determining the average energy level of noise during the sequences or periods of the signal carrying no speech or silence sequences or periods, in order to perform a first signal degradation evaluation.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 13)
- 11. Device for determining the noise or speech quality degradation of a signal, without using any reference or initial signal, whereby said device mainly comprises means for decomposing the signal to be analysed through a segmentation algorithm, means for applying at least one metric to the resulting decomposed signal and means for evaluating the signal degradation.
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