Voice switching arrangement for telephone conferencing

Details Voice switching arrangement for telephone conferencing Voice switching arrangement for telephone conferencing

1982-11-18

1984-06-26

Pellinen, A. D.

1791702, H04M 356

Patent

active

044567928

ABSTRACT:
In a telephone conference system, a voice switching arrangement allows a speaker who has seized the line to hear and thus permit an interrupting speaker an opportunity to talk. This arrangement is achieved in a multiparty connection by using two complementary comb filter banks on a voice channel with the filter passbands of the first bank being stopbands in the second bank and vice versa. During the time when only one speaker is talking, a full voice channel is provided for the speaker. When an interrupting speaker also begins to talk, the first filter bank is inserted in the speech signal path of the speaker who has seized the line and the second filter bank inserted in the speech signal path of the interrupting speaker such that the first speaker and the interrupting speaker receive the other's speech signals.

REFERENCES:
patent: 3622714 (1971-11-01), Berkley et al.
patent: 3694578 (1972-09-01), Reid
patent: 3755625 (1973-08-01), Maston
patent: 3958084 (1976-05-01), Nicholas

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