Portable music player
US8865991B1 · kind B1 · utility
6Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2008 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Jan 23, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2220/371
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A portable music player for the playback of a digital audio file comprises a memory for storing a plurality of digital audio files; an audio output; a control for setting a desired change in pitch or tempo; and a digital signal processor configured to process a digital audio file and recover an audio signal therefrom, perceptibly alter one of the pitch and the tempo of the audio signal in response to the desired change in pitch or tempo without perceptibly altering the other of the pitch and tempo, and output the altered audio signal to the audio output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.