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US 10,854,220 B2Granted
Pitch detection algorithm based on PWVT of Teager energy operator
AssigneeOmniSpeech LLC
InventorVahid Khanagha
Life of this patent
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Abstract
A pitch detection method. Such a pitch detection method may use a Teager Energy Operator (TEO) with a Pseudo Weigner Ville Transformation (PWVT) to recover speech from noise and to recover low-frequency information of the speech signal in its detection of a pitch value. Also, the pitch detection method may use the combinatory PWVT and the respective state machine for decision making.
Claims16
A method for a pitch detection comprising:
- applying, by a processor communicatively coupled to one or more memory devices, a Teager Energy Operator (TEO) to a first signal to generate a second signal;
- computing, by the processor, a Pseudo Weigner Ville Transformation (PWVT) to generate a third signal from the first signal;
- computing, by the processor, the PWVT to generate a fourth signal from the second signal;
- generating, by the processor, a combined signal from the third signal and the fourth signal;
- computing, by the processor, to generate a pitch candidate, a harmonic summation on at least one of the combined signal and the third signal;
- and
- deciding, by the processor, the pitch candidate as a pitch value, the pitch candidate is larger than a threshold.
4 more elements
A system for a pitch detection comprising:
- one or more memory devices;
- and
- at least one processor communicatively coupled to the one or more memory devices, the processor operable to:
- apply a Teager Energy Operator (TEO) to a first signal to generate a second signal;
- compute a Pseudo Weigner Ville Transformation (PWVT) to generate a third signal from the first signal;
- compute the PWVT to generate a fourth signal from the second signal;
- generate a combined signal from the third signal and the fourth signal;
- compute a harmonic summation on at least one of the combined signal and the third signal to generate a pitch candidate;
- and
- decide the pitch candidate as a pitch value, the pitch candidate is larger than a threshold.
7 more elements
Dependencies are inferred from the claim text.