Device and method for echo compensation in a two-wire full...

Details Device and method for echo compensation in a two-wire full... Device and method for echo compensation in a two-wire full...

2005-02-15

2005-02-15

Isen, Forester W. (Department: 2644)

Telephonic communications

Echo cancellation or suppression

Residual echo cancellation

C379S406080

Reexamination Certificate

active

06856684

ABSTRACT:
Method and device for echo compensation with a common-frequency transmission method in duplex mode over a two-wire line, an echo compensation filter which has adjustable coefficients and is embodied as an FIR filter being arranged between the transmitter output and receiver input and an IIR filter with adjustable coefficients, whose coefficients can be determined as a function of the coefficients of the FIR filter, being additionally provided.

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patent: 6421377 (2002-07-01), Langberg et al.
patent: 6430287 (2002-08-01), Rao
patent: 3886070 (1994-04-01), None
patent: 0347394 (1989-12-01), None
patent: 0384490 (1990-08-01), None

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