EP 0891685 B1 19990908 - TRIGGERING A MEASUREMENT PROCESS FOR EVALUATING THE QUALITY OF AUDIO AND/OR SPEECH SIGNALS
Title (en)
TRIGGERING A MEASUREMENT PROCESS FOR EVALUATING THE QUALITY OF AUDIO AND/OR SPEECH SIGNALS
Title (de)
TRIGGERUNG EINES MESSVERFAHRENS ZUR QUALITÄTSBEURTEILUNG VON AUDIO- UND/ODER SPRACHSIGNALEN
Title (fr)
DECLENCHEMENT D'UN PROCEDE DE MESURE SERVANT A EVALUER LA QUALITE DE SIGNAUX AUDIO ET/OU VOCAUX
Publication
Application
Priority
- DE 19643400 A 19961021
- DE 19730716 A 19970717
- EP 9705814 W 19971021
Abstract (en)
[origin: WO9818295A1] A process and device (24) for triggering a measurement process for evaluating the quality of audio and/or speech signals enable field measurements to be carried out to determine the quality of a digital transmission. During a first step, digital values of a reference signal underlying at least part of a test signal whose quality is to be evaluated are stored. Digital values of the test signals are also at least temporarily stored. The degree to which a section of the reference signal values coincides with the test signal values is determined to trigger the measurement process as soon as a predetermined degree of coincidence is exceeded, in order to compare a further section of the reference signal values to the test signal values in the relative position in time of the reference signal and test signal values at the moment when a predetermined degree of coincidence occurs.
IPC 1-7
IPC 8 full level
G10L 25/51 (2013.01); G10L 19/00 (2013.01); G10L 25/69 (2013.01); H04H 20/14 (2008.01); H04R 29/00 (2006.01)
CPC (source: EP)
H04H 20/14 (2013.01); H04R 29/00 (2013.01)
Designated contracting state (EPC)
AT CH DE DK FR GB IE IT LI LU NL SE
DOCDB simple family (publication)
WO 9818295 A1 19980430; AT E184444 T1 19990915; AU 4948897 A 19980515; AU 714063 B2 19991216; CA 2264112 C 20000229; DE 19730716 A1 19980423; DE 59700423 D1 19991014; DK 0891685 T3 19991220; EP 0891685 A1 19990120; EP 0891685 B1 19990908; JP 2000505269 A 20000425; JP 3155283 B2 20010409; KR 100319465 B1 20020105; KR 20000048615 A 20000725
DOCDB simple family (application)
EP 9705814 W 19971021; AT 97912209 T 19971021; AU 4948897 A 19971021; CA 2264112 A 19971021; DE 19730716 A 19970717; DE 59700423 T 19971021; DK 97912209 T 19971021; EP 97912209 A 19971021; JP 51896298 A 19971021; KR 19997002555 A 19990325