G - Physics – 10 – L
Patent
G - Physics
10
L
354/47
G10L 1/00 (1980.01)
Patent
CA 1164099
TEST SIGNAL GENERATOR FOR SIMULATED SPEECH Abstract of the Disclosure A test signal generator for pseudo-simulated non-intelligible speech. The generator comprises first and second ROM's controlled by first and second address counters driven by a single clock. The first ROM generates digital samples which when decoded produce a random signal having a gaussian amplitude distribution. The second ROM also generates digital samples which when decoded produce a modulating signal having a power spectrum substantially equal to that of the modulation envelope of speech and a wave shape that results in a gamma amplitude distribution of a gaussian amplitude distributed signal. Each cycle of the modulating signal has an identical wave shape but a randomly varying wave period. The output of the second ROM is demodulated in a first digital-to-analog converter and the demodulated output is used to amplitude modulate the output of the first ROM in a second digital-to-analog converter to provide an output signal which is then passed through a band-shaping filter to provide the pseudo-simulated non-intelligible speech at its output. - i -
385802
Mowle John E.
Nortel Networks Limited
LandOfFree
Test signal generator for simulated speech does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Test signal generator for simulated speech, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Test signal generator for simulated speech will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-907270