Method for varying the pitch of a musical tone produced through playback of a stored waveform
US5814750A · kind A · utility
21Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1995 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Nov 9, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S84/09
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method for resampling includes convolving a given set of samples with the impulse response function of a low-pass filter. In this method, values of the impulse response required for the convolution calculation are computed at the time of resampling from a segmented polynomial approximating the impulse response. In one embodiment, the method is applied to provide musical tones of various pitches from a stored waveform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.