Global Patent Index - EP 1849157 A1

EP 1849157 A1 20071031 - METHOD OF MEASURING ANNOYANCE CAUSED BY NOISE IN AN AUDIO SIGNAL

Title (en)

METHOD OF MEASURING ANNOYANCE CAUSED BY NOISE IN AN AUDIO SIGNAL

Title (de)

VERFAHREN ZUR MESSUNG VON DURCH GERÄUSCHE IN EINEM AUDIOSIGNAL VERURSACHTEN BEEINTRÄCHTIGUNGEN

Title (fr)

PROCEDE DE MESURE DE LA GENE DUE AU BRUIT DANS UN SIGNAL AUDIO

Publication

EP 1849157 A1 20071031 (FR)

Application

EP 06709505 A 20060213

Priority

  • FR 2006050126 W 20060213
  • FR 0501747 A 20050218

Abstract (en)

[origin: US2008267425A1] A method of computing an objective score (NOB) of annoyance caused by noise in an audio signal processed by a noise reduction function, said method including a preliminary step of obtaining a predefined test audio signal (x[m]) containing a wanted signal free of noise, a noisy signal (xb[m]) obtained by adding a predefined noise signal to said test signal (x[m]), and a processed signal (y[m]) obtained by applying the noise reduction function to said noisy signal (xb[m]), wherein said method further includes a step (a 3, a 4 ) of measuring the apparent loudness of frames of said noisy signal (xb[m]) and said processed signal (y[m]) and of measuring tonality coefficients of frames of said processed signal (y[m]).

IPC 8 full level

G10L 19/00 (2006.01); G10L 21/02 (2006.01); G10L 21/0208 (2013.01); G10L 25/69 (2013.01)

CPC (source: EP US)

G10L 21/0208 (2013.01 - EP US); G10L 25/69 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

FR 2882458 A1 20060825; AT E438173 T1 20090815; DE 602006008111 D1 20090910; EP 1849157 A1 20071031; EP 1849157 B1 20090729; ES 2329932 T3 20091202; US 2008267425 A1 20081030; WO 2006087490 A1 20060824

DOCDB simple family (application)

FR 0501747 A 20050218; AT 06709505 T 20060213; DE 602006008111 T 20060213; EP 06709505 A 20060213; ES 06709505 T 20060213; FR 2006050126 W 20060213; US 88457306 A 20060213