Method and system for signal processing using a sparse approximation of the S-transform
First Claim
1. A method for processing signal data indicative of a characteristic of an object comprising:
- receiving the signal data;
transforming the signal data into second signal data within a Stockwell domain based upon a sparse approximation of an S-transform of the signal data;
processing the second signal data within the Stockwell domain to extract features therefrom;
generating third signal data indicative of the extracted features; and
,providing the third data.
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Abstract
The present invention relates to a method and system for processing time series signal data or image signal data indicative of a characteristic of an object. Received signal data are transformed into second signal data within a Stockwell domain based upon a sparse approximation of a S-transform of the signal data. The second signal data are then processed within the Stockwell domain to extract features therefrom. The processing includes determination of local spectra at predetermined locations; determination of voices at predetermined frequencies; and filtering of the signal data using a filter function in dependence upon frequency and time or space. The signal processing method and system according to the invention enables signal processing based on the S-transform using a desktop computer or workstation.
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Citations
25 Claims
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1. A method for processing signal data indicative of a characteristic of an object comprising:
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receiving the signal data; transforming the signal data into second signal data within a Stockwell domain based upon a sparse approximation of an S-transform of the signal data; processing the second signal data within the Stockwell domain to extract features therefrom; generating third signal data indicative of the extracted features; and
,providing the third data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 21, 22)
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12. A storage medium having stored therein executable commands for execution on a processor, the processor when executing the commands performing:
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receiving the signal data; transforming the signal data into second signal data within a Stockwell domain based upon a sparse approximation of a S-transform of the signal data; and
,processing the second signal data within the Stockwell domain to extract features therefrom; generating third signal data indicative if the extracted features; and
,providing the third signal data. - View Dependent Claims (13, 14, 15, 23)
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16. A system for processing signal data indicative of a characteristic of an object comprising:
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an input port for receiving the signal data, the signal data being one of time series signal data and image signal data; a processor in communication with the first port for; transforming the signal data into second signal data within a Stockwell domain based upon a sparse approximation of a S-transform of the signal data; and
,processing the second signal data within the Stockwell domain to extract features therefrom; generating third signal data indicative of the extracted features; and
,an output port in communication with the processor for providing the third signal data. - View Dependent Claims (17, 18, 19, 20, 24, 25)
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Specification