Tone and periodical signal detection

Details Tone and periodical signal detection Tone and periodical signal detection

1998-09-24

2000-09-19

Mai, Tan V.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

G06F 1710

Patent

active

061226521

ABSTRACT:
Algorithms for quickly and efficiently detecting a periodic signal such as a DTMF signal in a telephone system are described. The algorithms, implemented in a tone detector, detect the periodicity of the input data and do not require an estimation of the tone frequency.

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patent: 5533118 (1996-07-01), Cesaro et al.
patent: 5576983 (1996-11-01), Shiokawa

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