EP 0891685 A1 19990120 - 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)
Citation (search report)
See references of WO 9818295A1
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