Pitch detection algorithm based on multiband pwvt of teager energy operator
AssigneeOmniSpeech LLC
InventorVahid KHANAGHA
Life of this patent
Estimating the term…
Abstract
A pitch detection method. Such a pitch detection method may have M-PWVT-TEO algorithm to detect a pitch value from a speech signal, apply a partial auto-correlation to a current signal with the pitch value to compensate the delay of the pitch value. Also, the pitch detection method may apply a full auto-correlation to the speech signal where the pitch value is not detected to recover on-sets of the speech signal.
Claims17
The method of a pitch detection comprising:
- applying M-PWVT-TEO algorithm to a signal to detect a pitch value;
- taking the pitch value as an initial guess;
- and
- applying a partial auto-correlation to a current signal with the initial guess to generate a current pitch value.
The method of claim 2, further comprising:
- applying a full auto-correlation to the signal in which the pitch value is not detected to generate a maximum correlation value;
- and
- deciding a corresponding delay value of the maximum correlation value as the current pitch value if the maximum correlation value is larger than an adaptive threshold.
The method of claim, wherein a low-frequency part of the combined spectral representation are taken from the second spectral representation and a remaining part of the combined spectral representation are taken from the first spectral representation.
Dependencies are inferred from the claim text.