A Packet Loss Concealment Technique Improving Quality of Service for Wideband Speech Coding in Wireless Sensor Networks

Park, Nam In; Kang, Jin Ah; Lee, Seong Ro; Kim, Hong Kook

doi:10.1155/2014/852798

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…To evaluate the quality of the decoded speech for each method, scores of wideband perceptual evaluation of speech quality (WPESQ) were measured as defined by the ITU-T Recommendation P.862.2 [26]. For the simulation of WMSN conditions, the Gilbert-Elliot (GE) channel model [25] was used to simulate the packet loss conditions because it is able to characterize the fading of a wireless network [6, 27, 28]. In this paper, burst PLRs were generated from 0 to 25% at a step of 5% using the GE model.…”

Section: Performance Evaluationmentioning

confidence: 99%

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Adaptive Speech Streaming Based on Speech Quality Estimation and Artificial Bandwidth Extension for Voice over Wireless Multimedia Sensor Networks

Kang

Park

Kim

et al. 2015

International Journal of Distributed Sensor Networks

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In this paper, an adaptive speech streaming method is proposed to improve the perceived speech quality (PSQ) of voice over wireless multimedia sensor network (WMSNs). First of all, the proposed method estimates the PSQ of the received speech data under different network conditions that are represented by the packet loss rates (PLRs). Simultaneously, the proposed method classifies the speech signal as either an onset or a nononset frame. Based on the estimated PSQ and the speech class, it determines an appropriate bit rate for the redundant speech data (RSD) that are transmitted with the primary speech data (PSD) to help reconstruct the speech signals of any lost frames. In particular, when the estimated PLR is high, the bit rate of the RSD should be increased by decreasing that of the PSD. Thus, the bandwidth of the PSD is changed from wideband to narrowband, and an artificial bandwidth extension technique is applied to the decoded narrowband speech. It is shown from the simulation that the proposed method significantly improves the decoded speech quality under packet loss conditions in a WMSN, compared to a decoder-based packet loss concealment method and a conventional redundant speech transmission method.

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Section: Performance Evaluationmentioning

confidence: 99%

“…Thus, the quality of service (QoS) of multimedia streaming over WMSNs has become even more important. Specifically, applications of voice over WMSN (VoWMSN) require a minimum level of perceived speech quality (PSQ) [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Speech Streaming Based on Speech Quality Estimation and Artificial Bandwidth Extension for Voice over Wireless Multimedia Sensor Networks

Kang

Park

Kim

et al. 2015

International Journal of Distributed Sensor Networks

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“…Later ITU-T according to G.711 Appendix A standardized a low complexity high quality PCM coded PLC technique that performs based on waveform substitution [9]. G.729.1 PLC algorithm is employed in ITU-T Recommendation G.729.1 decoder under burst and random frame loss rates of 10%, 20%, and 30%, respectively [10]. Packet loss is compensated through interleaving or duplicate transmission in AMR (adaptive multi-rate) speech coding of the third-generation partnership project (3GPP) [3].…”

Section: Introductionmentioning

confidence: 99%

Packet Loss Compensation for VoIP through Bone‐Conducted Speech Using Modified Linear Prediction

Ohidujjaman,

Yasui,

Sugiura

et al. 2023

IEEJ Transactions Elec Engng

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In this paper, we compare air‐conducted (AC) speech with bone‐conducted (BC) speech for the purpose of utilizing them in packet loss concealment (PLC) for speech quality of voice over internet protocol (VoIP). Instead of the autocorrelation method of linear prediction (LP), which was utilized in the conventional PLC techniques, we employ the modified covariance (MC) method. The MC method provides accurate LP estimation from short input data samples and avoids the numerical problem the autocorrelation method suffers from. The lost frame is compensated from both forward and backward directions in which linear gain and weighting are applied. When BC speech is used as the input speech data for PLC in the case where the speech sender is in noisy environments, BC speech behaves more accurately than the corresponding AC speech, resulting in an excellent performance of the LP‐based PLC technique. This unveils a useful use of BC speech in speech information systems. Experiments show that in severe noise environments of AC speech‐to‐noise ratio being less than 10 dB, BC speech is superior to AC speech for PLC. It is also shown that the transmitted BC speech is more accurately reconstructed for PLC than transmitted AC speech is done. © 2023 The Authors. IEEJ Transactions on Electrical and Electronic Engineering published by Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

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WR-RAC: Waveform Regenerator in Real time for Audio Call

Gangan,

Chaudhary,

Shah

et al. 2023

2023 IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT)

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A Packet Loss Concealment Technique Improving Quality of Service for Wideband Speech Coding in Wireless Sensor Networks

Cited by 3 publications

References 18 publications

Adaptive Speech Streaming Based on Speech Quality Estimation and Artificial Bandwidth Extension for Voice over Wireless Multimedia Sensor Networks

Adaptive Speech Streaming Based on Speech Quality Estimation and Artificial Bandwidth Extension for Voice over Wireless Multimedia Sensor Networks

Packet Loss Compensation for VoIP through Bone‐Conducted Speech Using Modified Linear Prediction

WR-RAC: Waveform Regenerator in Real time for Audio Call

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