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US 6,446,038 B1Granted
Method and system for objectively evaluating speech
AssigneeQwest Communications International Inc.
InventorsAruna Bayya, Marvin Vis
Life of this patent
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AssigneeQwest Communications International Inc.
InventorsAruna Bayya, Marvin Vis
Estimating the term…
A method and system for objectively evaluating the quality of speech in a voice communication system. A plurality of speech reference vectors is first obtained based on a plurality of clean speech samples. A corrupted speech signal is received and processed to determine a plurality of distortions derived from a plurality of distortion measures based on the plurality of speech reference vectors. The plurality of distortions are processed by a non-linear neural network model to generate a subjective score representing user acceptance of the corrupted speech signal. The non-linear neural network model is first trained on clean speech samples as well as corrupted speech samples through the use of backpropagation to obtain the weights and bias terms necessary to predict subjective scores from several objective measures.
An output-based objective method for evaluating the quality of speech in a voice communication system comprising:
An output-based objective system for evaluating the quality of speech in a voice communication system comprising:
The system as recited in claim 15 wherein the means for performing the clustering technique includes means for performing a vector quantization.
A computer readable storage medium having information stored thereon representing instructions executable by a computer to evaluate the quality of speech in a voice communication system, the computer readable storage medium further comprising:
Dependencies are inferred from the claim text.