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US 2013/0255473 A1Published application
Tonal component detection method, tonal component detection apparatus, and program
AssigneeSony Corporation
InventorsMototsugu Abe, Masayuki Nishiguchi
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Abstract
There is provided a tonal component detection method including performing a time-frequency transformation on an input time signal to obtain a time-frequency distribution, detecting a peak in a frequency direction at a time frame of the time-frequency distribution, fitting a tone model in a neighboring region of the detected peak, and obtaining a score indicating tonal component likeness of the detected peak based on a result obtained by the fitting.
Claims11
A tonal component detection method comprising:
- performing a time-frequency transformation on an input time signal to obtain a time-frequency distribution;
- detecting a peak in a frequency direction at a time frame of the time-frequency distribution;
- fitting a tone model in a neighboring region of the detected peak;
- and
- obtaining a score indicating tonal component likeness of the detected peak based on a result obtained by the fitting.
2 more elements
A tonal component detection apparatus, comprising:
- a time-frequency transformation unit configured to perform a time-frequency transformation on an input time signal to obtain a time-frequency distribution;
- a peak detection unit configured to detect a peak in a frequency direction at a time frame of the time-frequency distribution;
- a fitting unit configured to perform fitting on a tone model in a neighboring region of the detected peak;
- and
- a scoring unit configured to obtain a score indicating tonal component likeness of the detected peak based on a result obtained by the fitting.
2 more elements
A program for causing a computer to function as:
- means for performing a time-frequency transformation on an input time signal to obtain a time-frequency distribution;
- means for detecting a peak in a frequency direction at a time frame of the time-frequency distribution;
- means for fitting a tone model in a neighboring region of the detected peak;
- and
- means for obtaining a score indicating tonal component likeness of the detected peak based on a result obtained by the fitting.
2 more elements
Dependencies are inferred from the claim text.