Method of and device for encoding a signal, for example a speech

Details Method of and device for encoding a signal, for example a speech Method of and device for encoding a signal, for example a speech

1989-03-14

1990-10-02

Harkcom, Gary V.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 702

Patent

active

049612280

ABSTRACT:
In a device for and a method of encoding a first signal (f.sub.0), for example a speech parameter such as the pitch, as a function of time, to form a second signal (FIG. 2), a third signal (k) is derived from the first signal. The third signal is a measure of the curvature of the first signal as a function of time. The extrema (such as k(t.sub.1) in FIG. 1b) in this third signal are determined and the second signal is generated in the form of a sequence of information blocks (B.sub.1, B.sub.2, . . . ), of which one information block (such as B.sub.3) contains time information corresponding to the instant (t.sub.3) at which an extremum occurs in the third signal.

REFERENCES:
patent: 2959639 (1956-03-01), Pierce
patent: 3023277 (1962-02-01), Matthews
patent: 3278685 (1966-10-01), Harper
patent: 4680797 (1987-07-01), Benke
IMAI et al., "An Efficient Encoding Method for Electocardiography using Spline Functions", "Systems and Computers in Japan," 5/85, No. 3, pp. 85-94.

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