Non-intrusive single-ended speech quality assessment in VoIP

Ding, Lijing; Zhong, Lin; Radwan, Ayman; El-Hennawey, M.S.; Goubran, Rafik

doi:10.1016/j.specom.2007.04.003

Cited by 34 publications

(26 citation statements)

References 25 publications

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“…In fact, artifacts introduced by such enhancement schemes are dependent on noise type and noise levels. As a consequence, pure link parametric measurement is performed in a manner similar to that of [41], where the SNR is estimated online and used in the extended E-model rating. Here, the SNR is estimated with the P.563 "noise analysis" module described in [31].…”

Section: Resultsmentioning

confidence: 99%

“…More recently, the work described in [41] proposes a hybrid methodology where temporal clippings and SNR are estimated from the degraded speech signal in a single-ended manner using complex signal-processing techniques. RTP and RTCP analysis is used to obtain the packet loss rate.…”

Section: ) Hybrid Measurement-previous Investigationsmentioning

confidence: 99%

“…Extended E-model implementations propose to estimate E-model parameters (e.g., SNR) in real-time [41]. In this experiment, an extended E-model implementation is used.…”

Section: Limitations Of Pure Link Parametric Measurementmentioning

confidence: 99%

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Hybrid Signal-and-Link-Parametric Speech Quality Measurement for VoIP Communications

Falk

Chan

2008

IEEE Trans. Audio Speech Lang. Process.

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Abstract-A hybrid signal-and-link-parametric approach to speech quality measurement for voice-over-Internet protocol (VoIP) communications is described. Connection parameters are used to determine a base quality representative of the transmission link. Degradation factors, computed from perceptual features extracted from the decoded speech signal, are used to quantify distortions not captured by the connection parameters. The algorithm is tested on speech degraded by acoustic noise, temporal clippings, and noise suppression artifacts, thus simulating degradations present in wireless-VoIP tandem connections. Hybrid measurement is shown to overcome the limitations of pure link parametric and pure signal-based measurement methods, resulting in better measurement accuracy for modern VoIP communications. In addition, the proposed algorithm incurs modest computational overhead relative to pure link parametric measurement and attains up to 88% reduction in processing time relative to the ITU-T standard P.563 signal-based algorithm.Index Terms-Live call monitoring, quality impairments, speech distortions, speech quality measurement, voice-over-Internet protocol (VoIP).

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Section: Resultsmentioning

confidence: 99%

Section: ) Hybrid Measurement-previous Investigationsmentioning

confidence: 99%

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Hybrid Signal-and-Link-Parametric Speech Quality Measurement for VoIP Communications

Falk

Chan

2008

IEEE Trans. Audio Speech Lang. Process.

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“…A listening-only model based on both network impairments (packet loss), and voice distortions (temporal clipping and noise) was presented in [33]. First, the aforementioned impairments are detected.…”

Section: Hybrid Algorithmsmentioning

confidence: 99%

Revisiting VoIP QoE assessment methods: are they suitable for VoLTE?

Sánchez-Iborra

Cano

García-Haro

2016

NPA

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Voice over LTE (VoLTE) emerges as the basis for voice services in future cellular networks. At the same time, Quality of user Experience (QoE) assessment methods have notably evolved in the last years, especially for Voice over IP (VoIP) services. The question that rises is, are these models ready to be used for VoLTE? In this paper, we contribute to answer this question by: (i) providing a high level exploration of current objective non-intrusive models for Voice over IP (VoIP) QoE evaluation, (ii) highlighting the review of works aiming to improve the standardized E-model (ITU-T Rec. G.107 (06/2015)) and the examination of non-standardized solutions proposed by the research community, and (iii) bringing forth the challenges identified for the completion of a successful QoE evaluation approach according to modern VoIP services such as VoLTE.

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“…파라메트릭 Ding(2007) [8] 은 [9] 는 패킷의 S/U/V 분류에서 보다 확장하여 SMV(Selectable Mode Vocoder) [10] 의 [12] 의 음성품 질 측정 결과를 추정하는 비 침입 모델을 제안하고, 원 패킷 정보를 이용하는 침입 모델과 ITU의 비 침입 적 음질평가 방식인 P.563 [4] 의 결과와 비교하였다. ( ) ( )…”

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Non-Intrusive Speech Quality Estimation of G.729 Codec using a Packet Loss Effect Model

Lee¹,

Kang²

2013

The Journal of the Acoustical Society of Korea

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This paper proposes a non-intrusive speech quality estimation method considering the effects of packet loss to perceptual quality. Packet loss is a major reason of quality degradation in a packet based speech communications network, whose effects are different according to the input speech characteristics or the performance of the embedded packet loss concealment (PLC) algorithm. For the quality estimation system that involves packet loss effects, we first observe the packet loss of G.729 codec which is one of narrowband codec in VoIP system. In order to quantify the lost packet affects, we design a classification algorithm only using speech parameters of G.729 decoder. Then, the degradation values of each class are iteratively selected that maximizes the correlation with the degradation PESQ-LQ scores, and total quality degradation is modeled by the weighted sum. From analyzing the correlation measures, we obtained correlation values of 0.8950 for the intrusive model and 0.8911 for the non-intrusive method.

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Non-intrusive single-ended speech quality assessment in VoIP

Cited by 34 publications

References 25 publications

Hybrid Signal-and-Link-Parametric Speech Quality Measurement for VoIP Communications

Hybrid Signal-and-Link-Parametric Speech Quality Measurement for VoIP Communications

Revisiting VoIP QoE assessment methods: are they suitable for VoLTE?

Non-Intrusive Speech Quality Estimation of G.729 Codec using a Packet Loss Effect Model

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