Device for and method of generating an artificial speech signal

Details Device for and method of generating an artificial speech signal Device for and method of generating an artificial speech signal

1978-06-16

1980-02-05

Morrison, Malcolm A.

G10L 110

Patent

active

041873971

ABSTRACT:
To produce a signal simulating the characteristics of the average human voice, a basic periodic waveform with generally sinusoidal sections separated by level sections is passed through a first filter for substantially equalizing its frequency components and is then shaped in a second filter whose transfer function approximates that of the vocal tract in a frequency band of 0 to 4 kHz. The basic waveform fed to the first filter may be modulated in amplitude and/or recurrence period by a pseudorandom signal from an ancillary generator.

REFERENCES:
patent: 3549807 (1970-12-01), Rabiner
patent: 3909533 (1975-09-01), Williman

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