Title :
In-service nonintrusive measurement of noise and active speech level in telephone-type networks
Author :
Bertocco, Matteo ; Lorenzin, Dennis ; Paglierani, Pietro
Author_Institution :
Dipt. di Elettronica e Inf., Padova Univ., Italy
fDate :
8/1/1998 12:00:00 AM
Abstract :
The paper presents an in-service, nonintrusive technique for the measurement of noise level and active speech level in telecommunication systems. It is based on the segmentation of the signal observed during a telephone call into active speech and noise intervals and on an improved method for level estimation via the determination of the noise-level probability density function. Experimental results show the high accuracy of the method also under poor signal-to-noise ratio conditions and its robustness with respect to other real-life impairments found in telecommunication lines
Keywords :
electric noise measurement; fault diagnosis; speech processing; telecommunication equipment testing; telephone networks; active speech level; fault diagnosis; in-service nonintrusive measurement; level estimation; noise level; probability density function; real-life impairments; signal segmentation; signal-to-noise ratio conditions; telephone-type networks; Active noise reduction; Intelligent networks; Noise level; Noise measurement; Noise robustness; Performance evaluation; Signal processing; Speech enhancement; Telephony; Testing;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
