Method and apparatus for adjusting the pitch and timbre of an input signal in a controlled manner
US5969282A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1998 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Jul 28, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2250/501
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A system and method are disclosed for independently adjusting the pitch and timbre of an input signal within a modified Lent shifter. A method of adjusting the pitch and timbre of an input signal includes receiving an input signal and determining a window length corresponding to the input signal. A finite length spectrally smoothed signal is created from the input signal by synchronously windowing the input signal. The timbre of the finite length spectrally smoothed signal is adjusted thereby creating a finite length timbre adjusted signal. The finite length timbre adjusted signal is recombined at a rate necessary to produce a desired output pitch thereby reducing artifacts introduced by processing the finite length timbre adjusted signal and minimizing latency between receiving the input signal and producing a desired output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.