A new principle to avoid undesirable oscillations in electro acoustic loops application to the design of a hands free telephone set without voice switching

2005 ◽  
Author(s):  
G. Ferrieu ◽  
P. Amstutz
Keyword(s):  
Telephone Set

Hands-free telephone set

1996 ◽  
Vol 99 (6) ◽  
pp. 3279
Author(s):  
Hiroyuki Masada
Keyword(s):  
Telephone Set

An improved telephone set

1951 ◽  
Vol 70 (9) ◽  
pp. 770-775 ◽  
Author(s):  
A. H. Inglis ◽  
W. L. Tuffnell
Keyword(s):  
Telephone Set

An Improved Circuit for the Telephone Set

1953 ◽  
Vol 32 (3) ◽  
pp. 611-626 ◽  
Author(s):  
A. F. Bennett
Keyword(s):  
Telephone Set

Combination of a loudspeaking telephone set and a hand set for soft‐speaking

1984 ◽  
Vol 75 (1) ◽  
pp. 310-310
Author(s):  
Klaas R. Franzen ◽  
Gijsbert W. Versteeg ◽  
Cornelis M. A. Theunisse
Keyword(s):  
Telephone Set
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