Objective quality evaluation for low-bit-rate speech coding systems

Kitawaki, Nobuhiko; Nagabuchi, Hiromi; Itoh, Kazuya

doi:10.1109/49.601

Cited by 117 publications

(40 citation statements)

References 6 publications

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“…Their capability to effectively describe the listeners' auditory response is limited by the constraints of the speech production models. Over the last three decades, several spectral domain measures have been proposed in the literature, including the log likelihood ratio [14], Itakura-Saito distortion measure [15], and the cepstral distance [16]. The log likelihood ratio (LLR) …”

Section: Spectral Domain Measuresmentioning

confidence: 99%

Advances in voice quality measurement in modern telecommunications

Mahdi

Picovici

2009

Digital Signal Processing

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Section: Spectral Domain Measuresmentioning

confidence: 99%

Advances in voice quality measurement in modern telecommunications

Mahdi

Picovici

2009

Digital Signal Processing

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“…The quality evaluation process is carried out by the comparison of the original and the degraded speech CEP distance [17], [8] is the estimate of log-spectrum distance between original and reconstructed speech and is computed by taking the log of spectrum and retransformed to time-domain. With this process the excitation signal of speech is separated from the convolved vocal tract characteristics.…”

Section: Perceptual Measurement 61pesqmentioning

confidence: 99%

Comparative Analysis of Speech Compression Algorithms with Perceptual and LP based Quality Evaluations

Saleem¹,

Nasir²,

Ali³

2012

IJCA

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Speech compression is one of the leading vicinity of digital signal processing that spotlight on dipping the bit rate of speech signals for transmission and storage devoid of considerable loss of quality. In past decades many speech coding techniques have been proposed for speech analysis. This paper attempts to assess and compare two compression techniques on speech signals. To execute this idea we have chosen two low bit rate and widely used speech analysis methods called VELP and MELP. The performances of both are evaluated by performing objective quality tests including PESQ, IS and CEP. Similar speech files are tested with both coders. The objective assessments show that at low bit rate the MELP shows better performance as compared to VELP.

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“…Its general applicability for speech quality evaluation has been discovered by Kitawaki et al [6], who compared elementary objective speech quality measures for voiceband codecs. The cepstral distance revealed the best correspondence to the mean opinion score among all objective measures studied.…”

Section: B Evaluation Methodology Based On Elementary Objective Metricsmentioning

confidence: 99%

“…This correlation performance has been further verified for waveform preserving codecs and for the MNRU, which is one of the most common reference conditions for subjective and objective voice quality assessments, as part of the recent study by Voran [2]. Because of its widely verified correlation performance to subjective hearing tests, we use the results of the fundamental study [6] to predict the mean opinion score from the cepstral distance, as detailed shortly.…”

Section: B Evaluation Methodology Based On Elementary Objective Metricsmentioning

confidence: 99%

Voice quality evaluation in wireless packet communication systems: a tutorial and performance results for RoHC

Rein

Fitzek

Reisslein

2005

IEEE Wireless Commun.

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As wireless systems are evolving towards supporting a wide array of services, including the traditional voice service, using packet-switched transport, it becomes increasingly important to assess the impact of packet-switched transport protocols on the voice quality. In this article, we present a tutorial on voice quality evaluation for wireless packet-switched systems. We introduce an evaluation methodology that combines elementary objective voice quality metrics with a frame synchronization mechanism. The methodology allows networking researchers to conduct effective and accurate quality evaluation of packet voice. To illustrate the use of the described evaluation methodology and the interpretation of the results, we conduct a case study of the impact of Robust Header Compression (ROHC) on the voice quality achieved with real-time transmission of GSM encoded voice over a wireless link.

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Objective quality evaluation for low-bit-rate speech coding systems

Cited by 117 publications

References 6 publications

Advances in voice quality measurement in modern telecommunications

Advances in voice quality measurement in modern telecommunications

Comparative Analysis of Speech Compression Algorithms with Perceptual and LP based Quality Evaluations

Voice quality evaluation in wireless packet communication systems: a tutorial and performance results for RoHC

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