Extending the E-Model for Capturing Noise Reduction and Echo Canceller Impairments

SEBASTIAN MOELLER; FRANK KETTLER; HANS-WILHELM GIERLICH; SILVIA POSCHEN; NICOLAS COTE; ALEXANDER RAAKE; MARCEL WAELTERMANN

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Extending the E-Model for Capturing Noise Reduction and Echo Canceller Impairments

机译：扩展E模型以捕获降噪和回声消除器损伤

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In this paper we address the parametric prediction of speech quality for planning telecommunication networks. More specifically, we propose an extension to the E-model recommended by the International Telecommunication Union in order to better capture the effects of signal processing equipment integrated in the terminals. We propose to use two additional parameters for describing the effects of noise reduction, namely the signal-to-noise ratio improvement during speech and the total noise level reduction. Furthermore, we propose to introduce additional equipment impairment factors for describing the speech degradations resulting from imperfect noise reduction and echo cancellation. For both aspects, noise reduction and echo degradations, the proposed extensions could already be analyzed on the basis of first subjective data collected with mobile terminals and echo simulations. Directions for future work are discussed.

机译：在本文中，我们针对计划电信网络解决语音质量的参数预测。更具体地说，我们提议对国际电信联盟推荐的E模型进行扩展，以更好地捕获集成在终端中的信号处理设备的效果。我们建议使用两个附加参数来描述降噪的效果，即语音过程中信噪比的提高和总噪声水平的降低。此外，我们建议引入其他设备减损因素，以描述由于不完全的降噪和回声消除而导致的语音质量下降。对于降噪和回声降级这两个方面，已经可以基于使用移动终端收集的第一主观数据和回声模拟来分析提议的扩展。讨论了未来工作的方向。

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来源
《Journal of the Audio Engineering Society》 |2012年第3期|p.165-175|共11页
作者
SEBASTIAN MOELLER; FRANK KETTLER; HANS-WILHELM GIERLICH; SILVIA POSCHEN; NICOLAS COTE; ALEXANDER RAAKE; MARCEL WAELTERMANN;
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Quality and Usability Lab, Telekom Innovation Laboratories, Technische Universitat Berlin, Germany;

HEAD acoustics GmbH, Herzogenrath, Germany;

HEAD acoustics GmbH, Herzogenrath, Germany;

HEAD acoustics GmbH, Herzogenrath, Germany;

Institut Superieur de I'Electronique et du Numerique (ISEN), Lille, France;

Assessment of IP-based Applications Lab, Telekom Innovation Laboratories, Technische Universitat Berlin, Germany;

Quality and Usability Lab, Telekom Innovation Laboratories, Technische Universitat Berlin, Germany;

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3. Echo Canceller with Noise Reduction Provides Comfortable Hands-free-Telecommunication in Noisy Environments [J] . Sumitaka Sakauchi, Yoichi Haneda, Manabu Okamoto, NTT Technical Review . 2004,第3期

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Extending the E-Model for Capturing Noise Reduction and Echo Canceller Impairments

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