Stream segregation for stereo signals
AssigneeCreative Technology Ltd
InventorsCarlos M. Avendano, Jean-Marc M. Jot
Life of this patent
Estimating the term…
Abstract
Separating a source in a stereo signal having a left channel and a right channel includes transforming the signal into a short-time transform domain; computing a short-time similarity measure between the left channel and the right channel; classifying portions of the signals having similar panning coefficients according to the short-time similarity measure; segregating a selected one of the classified portions of the signals corresponding to the source; and reconstructing the source from the selected portions of the signals.
Claims27
A method of separating a source in a stereo signal having a left channel and a right channel comprising:
- transforming the stereo signal into a short-time transform domain;
- computing a short-time similarity measure between the left channel and the right channel;
- classifying time-frequency portions associated with the stereo signal having similar panning coefficients according to the short-time similarity measure;
- segregating a selected one of the classified time-frequency portions associated with the stereo signal corresponding to the source;
- and
- reconstructing the source from the selected portions associated with the stereo signal.
A source separation system for separating a source in a stereo signal having a left channel and a right channel comprising:
- a processor configured to:
- transform the stereo signal into a short-time transform domain;
- compute a short-time similarity measure between the left channel and the right channel;
- classify time-frequency portions associated with the stereo signal having similar panning coefficients according to the short-time similarity measure;
- segregate a selected one of the classified time-frequency portions associated with the stereo signal corresponding to the source;
- and
- reconstruct the source from the selected portions associated with the stereo signal.
A computer program product for separating a source in a stereo signal having a left channel and a right channel, the computer program product being embodied in a computer readable medium and comprising computer instructions for:
- transforming the stereo signal into a short-time transform domain;
- computing a short-time similarity measure between the left channel and the right channel;
- classifying time-frequency portions of the signals associated with the stereo signal having similar panning coefficients according to the short-time similarity measure;
- segregating a selected one of the classified time-frequency portions associated with the stereo signal corresponding to the source;
- and
- reconstructing the source from the selected portions associated with the stereo signal.
A method of separating a source in a stereo signal having a left channel and a right channel comprising:
- transforming the stereo signal into a short-time spectral transform domain;
- computing a short-time similarity measure between the left channel and the right channel;
- identifying time-frequency regions associated with the stereo signal having similar panning coefficients according to the short-time similarity measure;
- segregating a selected one of the identified time-frequency regions corresponding to the source;
- and
- reconstructing the source from the selected time-frequency region.
A source separation system for separating a source in a stereo signal having a left channel and a right channel comprising:
- a processor configured to:
- transform the stereo signal into a short-time transform domain;
- compute a short-time similarity measure between the left channel and the right channel;
- identify time-frequency regions associated with the stereo signal having similar panning coefficients according to the short-time similarity measure;
- segregate a selected one of the identified time-frequency regions corresponding to the source;
- and
- reconstruct the source from the selected time-frequency region.
A computer program product for separating a source in a stereo signal having a left channel and a right channel, the computer program product being embodied in a computer readable medium and comprising computer instructions for:
- transforming the stereo signal into a short-time transform domain;
- computing a short-time similarity measure between the left channel and the right channel;
- identifying time-frequency regions associated with the stereo signal having similar panning coefficients according to the short-time similarity measure;
- segregating a selected one of the identified time-frequency regions corresponding to the source;
- and
- reconstructing the source from the selected time-frequency region.
Dependencies are inferred from the claim text.