INTERSPEECH 2008
9th Annual Conference of the International Speech Communication Association

Brisbane, Australia
September 22-26, 2008

On the Perceived Quality of Noise Reduced Signals

Valerie Gautier-Turbin, Laetitia Gros

Orange Labs, France

The subjective quality ratings of noisy speech enhanced by noise reduction algorithms should be obtained according to ITU-T Recommendation P.835, which is designed to evaluate the quality along three dimensions: signal distortion, annoyance due to background noise, and overall quality. In this paper, we investigate the impact of the scale used for the assessment of the background noise dimension and show that a degradation scale and a P.835 scale yield non negligible different results. The background noise ratings as well as the overall quality ratings are impacted, the degradation scale leading to more spread and discriminating results.

Full Paper

Bibliographic reference.  Gautier-Turbin, Valerie / Gros, Laetitia (2008): "On the perceived quality of noise reduced signals", In INTERSPEECH-2008, 2062-2065.