Conversionless digital speech production

Details Conversionless digital speech production Conversionless digital speech production

1986-11-18

1989-02-14

Salce, Patrick R.

Electrical audio signal processing systems and devices

Monitoring/measuring of audio devices

Loudspeaker operation

3645135, G10L 702

Patent

active

048052205

ABSTRACT:
Clear speech can be produced on a DAC-less personal computer from an all-software speech-generating program with an unlimited vocabulary by applying to the computer's speaker a square-wave carrier signal of ultrasonic frequency, and varying the duty cycle of the carrier signal in accordance with digitized speech samples to produce an audio signal. The computations necessary to produce the speech samples are so timed by the program that the CPU is free to turn the speaker on and off between computations at precisely the right instant for the correct generation of a carrier having a constant ultrasonic frequency and a duty cycle determined by the value of the speech samples.

REFERENCES:
patent: 4617645 (1986-10-01), Sprague
patent: 4692941 (1987-09-01), Jacks et al.

Affiliated with

Also associated with

Rating

Conversionless digital speech production does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Conversionless digital speech production, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conversionless digital speech production will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1372106