Wireless device and method in the wireless device
US-2016358613-A1 · Dec 8, 2016 · US
Computational techniques for continuous pitch correction and harmony generation
US8996364B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8996364-B2 |
| Application number | US-201113085415-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 12, 2011 |
| Priority date | Apr 12, 2010 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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Using signal processing techniques described herein, pitch detection and correction of a user's vocal performance can be performed continuously and in real-time with respect to the audible rendering of the backing track at the handheld or portable computing device. In some implementations, pitch detection builds on time-domain pitch correction techniques that employ average magnitude difference function (AMDF) or autocorrelation-based techniques together with zero-crossing and/or peak picking techniques to identify differences between pitch of a captured vocal signal and score-coded target pitches. Based on detected differences, pitch correction based on pitch synchronous overlapped add (PSOLA) and/or linear predictive coding (LPC) techniques allow captured vocals to be pitch shifted in real-time to “correct” notes in accord with pitch correction settings that code score-coded melody targets and harmonies.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of continuously pitch correcting a vocal performance, the method comprising: for a current block of an input signal, x(n), sampled from a vocal performance: estimating pitch for the current block of the sampled input signal, x(n); computing, for the current block of the sampled input signal x(n), coefficients of an adaptive predictive coder and, in correspondence therewith, generating a residue signal, e(n); temporally scaling the residue signa…
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Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G10H1/366Primary
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8996364B2 cover?
- Using signal processing techniques described herein, pitch detection and correction of a user's vocal performance can be performed continuously and in real-time with respect to the audible rendering of the backing track at the handheld or portable computing device. In some implementations, pitch detection builds on time-domain pitch correction techniques that employ average magnitude difference…
- Who is the assignee on this patent?
- Cook Perry R, Lazier Ari, Lieber Tom, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G10H1/366. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).