共 7 条
[1]
Blackwell OB, 1932, BELL SYST TECH J, V11, P53, DOI 10.1002/j.1538-7305.1932.tb02341.x
[2]
ECHO SUPPRESSOR DESIGN IN TELEPHONE COMMUNICATIONS
[J].
BELL SYSTEM TECHNICAL JOURNAL,
1963, 42 (06)
:2893-+
[3]
Dickieson A. C., 1963, BELL SYST TECH J, V42, P739
[4]
EFFECTS OF TIME DELAY AND ECHOES ON TELEPHONE CONVERSATIONS
[J].
BELL SYSTEM TECHNICAL JOURNAL,
1963, 42 (06)
:2869-+
[5]
TRANSMISSION DESIGN OF INTERTOLL TELEPHONE TRUNKS
[J].
BELL SYSTEM TECHNICAL JOURNAL,
1953, 32 (05)
:1019-1036
[6]
Characteristic time intervals in telephonic conversation
[J].
BELL SYSTEM TECHNICAL JOURNAL,
1938, 17
:281-291
[7]
SUBJECTIVE EVALUATION OF DELAY AND ECHO SUPPRESSORS IN TELEPHONE COMMUNICATIONS
[J].
BELL SYSTEM TECHNICAL JOURNAL,
1963, 42 (06)
:2919-+