Method and apparatus for voice emulation
US4589138A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1985 |
| Grant date | May 13, 1986 |
| Priority date | — |
| Expiry date | Apr 22, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H3/28
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A voice emulation device, operation of which is initiated by a person's voice, is disclosed. The device includes detector circuitry that responds to a voice to produce a binary indication of the voice that is delayed by a serial shift register. The delayed binary indication is coupled to a digital-to-analog converter where the rising and falling edges of the binary indication are "shaved" to provide the delayed binary indication with attack and decay characteristics to form an amplitude envelope. The amplitude envelope is modulated by a modulation signal of a pseudo-randomly varying (audio) frequency to generate an output signal which, when converted to aural form, produces a pseudo-articulate sound (i.e., voice emulation).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.