ENVIRONMENT #670253 IATE #45281 torann sa chúlra Tagairt an Ghníomhaireacht Eorpach Comhshaoil (GEC) ga Hintergrundgeräuschde background noiseen Sainmhíniú 1.Noise coming from source other than the noise source being monitored. Tagairt 1.KOREN; bruit de fondfr