Tone and periodical signal detection

Details Tone and periodical signal detection Tone and periodical signal detection

H - Electricity

04

M

H04M 3/22 (2006.01) H04Q 1/444 (2006.01) H04Q 1/45 (2006.01)

Patent

CA 2247216

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.

Algorithmes permettant la détection rapide et efficace d'un signal périodique, p. ex. un signal DTMF, dans un système téléphonique. Les algorithmes, utilisés dans un détecteur de tonalités, détectent la périodicité des données d'entrée et ne nécessitent pas l'estimation de la fréquence des tonalités.

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