Efficient Frame Erasure Concealment in Predictive Speech Codecs using Glottal Pulse Resynchronisation

Vaillancourt, Tommy; Jelinek, Milan; Salami, R.; Lefebvre, Rémi

doi:10.1109/icassp.2007.367269

Cited by 17 publications

(4 citation statements)

References 4 publications

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“…Error robustness of a speech coder is desirable in packet-based network systems where packet loss occurs. Recently several frame erasure concealment (FEC) techniques were introduced, and error robustness of speech coder is enhancing gradually [1]. The current paper is concerned with an effective method to quantize the spectrum envelope without using interframe prediction.…”

Section: Introductionmentioning

confidence: 99%

An efficient LSF quantization using dynamic bit allocation

Sung

Son

Lee

et al. 2009

2009 IEEE International Conference on Acoustics, Speech and Signal Processing

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The current paper is concerned with an effective method to quantize a spectrum envelope of a speech signal without having an inter-frame prediction. In this paper, we proposed a method referred to as dynamic bit allocation-split vector quantization (DBA-SVQ). The main feature of this structure is that it makes use of the ordering property of line spectral frequencies (LSF) and exploits multiple codebooks, normalization and the DBA technique. As a result, we can limit the dynamic range of LSF sub-vectors and allocate different numbers of bits in accordance with the range sizes to maximize the overall efficiency of quantization. The performance is compared with delta line spectral pairs (LSP) VQ, which is used in EVRC-B, demonstrating reduction in spectral distortion (SD).

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Section: Introductionmentioning

confidence: 99%

An efficient LSF quantization using dynamic bit allocation

Sung

Son

Lee

et al. 2009

2009 IEEE International Conference on Acoustics, Speech and Signal Processing

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“…The PLC algorithm proposed in [7] was developed to improve the narrowband speech quality by estimating the excitation using comfort noise and multiple codebooks. A technique based on the resynchronization of the glottal pulses in the low band was also proposed in [10], which was subsequently embedded into ITU-T Recommendation G.729.1 as the low-band PLC algorithm [10]. However, the high-band PLC algorithm for ITU-T Recommendation G.729.1 replaced spectral parameters in the modified discrete cosine transform (MDCT) domain with those of the previous frame [10,11].…”

Section: Introductionmentioning

confidence: 99%

“…A technique based on the resynchronization of the glottal pulses in the low band was also proposed in [10], which was subsequently embedded into ITU-T Recommendation G.729.1 as the low-band PLC algorithm [10]. However, the high-band PLC algorithm for ITU-T Recommendation G.729.1 replaced spectral parameters in the modified discrete cosine transform (MDCT) domain with those of the previous frame [10,11]. In this case, the high-band signal was reconstructed without regard to the low-band signal for the lost frames.…”

Section: Introductionmentioning

confidence: 99%

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

Park

Kang

Lee

et al. 2014

International Journal of Distributed Sensor Networks

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A packet loss concealment (PLC) algorithm is proposed to improve the quality of decoded speech when packet losses occur in a wireless sensor network. The proposed algorithm is mainly based on artificial bandwidth extension (ABE) from narrowband to wideband. It consists of three main functions: packet loss concealment in the narrowband, ABE in the modified discrete cosine transform (MDCT) domain, and smoothing of wideband MDCT coefficients with those of the last good frame. The performance of the proposed PLC algorithm is implemented by replacing the PLC algorithm employed in the ITU-T Recommendation G.729.1. The experimental results show that the proposed PLC algorithm provides significantly better speech quality than the PLC in the ITU-T G.729.1.

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Packet Loss and Concealment

Lecomte

Bäckström

2017

Signals and Communication Technology

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Efficient Frame Erasure Concealment in Predictive Speech Codecs using Glottal Pulse Resynchronisation

Cited by 17 publications

References 4 publications

An efficient LSF quantization using dynamic bit allocation

An efficient LSF quantization using dynamic bit allocation

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

Packet Loss and Concealment

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