Methods and apparatus for use in sound modification comparing time alignment data from sampled audio signals
US7825321B2 · kind B2 · utility
30Cited by
13References
51Claims
0Family size
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Key dates
| Filing date | Jan 26, 2006 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Sep 4, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2210/066
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A digitised audio signal, such as an amateur's singing, and a digital guide audio signal are supplied to a time alignment process that produces a time-aligned new signal, time-aligned to the guide signal. Pitch along the time-aligned new signal and along the guide signal is measured in processes and which supply these measurement to a pitch adjustment calculator which calculates a pitch correction factor C's(Fps) from these measurements and the nearest octave ratio of the signals. A pitch changing process modulates the pitch of the time-aligned new signal to produce a time-aligned and pitch adjusted new signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.