Impact of the duration of speech sequences on speech quality

• Autorzy: Pocta P. , Vaculík M.
• Języki publikacji: EN

Abstrakty

EN

This paper describes simulations of speech sequences transmission for intrusive measurement of voice transmission quality of service (VTQoS) in the environment of IP networks. The aim of the simulations was to investigate the impact of the different durations of speech sequences on speech quality from the jitter rate and packet loss point of view in IP networks. The ITU-T G.729 and ITU-T G.723.1 encoding schemes were used for the purpose of the simulations. The assessment of speech quality was realized by means of perceptual evaluation of speech quality (PESQ) algorithm. A comparison of the impact of different durations of speech sequences on speech quality and determination of the optimal duration of speech sequence for measurements of speech quality in telecommunication networks, is the aim of this paper.

Słowa kluczowe

EN

voice transmission quality of service; speech sequence; intrusive measurement; perceptual evaluation of speech quality; jitter rate; packet loss

• Wydawca: Instytut Łączności - Państwowy Instytut Badawczy
• Czasopismo: Journal of Telecommunications and Information Technology
• Rocznik: 2007
• Tom: nr 4
• Strony: 72--76
• Opis fizyczny: Bibliogr.19 poz., rys.

Twórcy

autor

Pocta P.

autor

Vaculík M.

• Faculty of Electrical Engineering, Department of Telecommunications, University of Žilina, Univerzitná st 1, 010 26 Žilina, Slovakia,

Bibliografia

• [1] “The E-model, a computational model for use in transmission planning”, ITU-T Rec. G.107 (03/2005).
• [2] “Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s”, ITU-T Rec. G.723.1 (05/2006).
• [3] “Coding of speech at 8 kbit/s using conjugate-structure algebraiccode- excited linear prediction (CS-ACELP)”, ITU-T Rec. G.729 (03/1996).
• [4] “Methods for subjective determination of transmission quality”, ITU-T Rec. P.800 (08/1996).
• [5] “Subjective performance assessment of telephone-band and wideband digital codecs”, ITU-T Rec. P. 830 (02/1996).
• [6] “Objective quality measurement of telephone-band (300–3400 Hz) speech codecs”, ITU-T Rec. P.861 (02/1998).
• [7] “Perceptual evaluation of speech quality (PESQ): An objective method for end-to-end speech quality assessment of narrow-band telephone networks and peech codecs”, ITU-T Rec. P.862 (02/2001).
• [8] “Mapping function for transforming P.862 raw result scores to MOS-LQO”, ITU-T Rec. P.862.1 (11/2003).
• [9] “Wideband extension to Recommendation P.862 for the assessment of wideband telephone networks and speech codecs”, ITU-T Rec. P.862.2 (11/2005).
• [10] “Application guide for objective quality measurement based on Recommendations P.862, P.862.1 and P.862.2”, ITU-T Rec. P.862.3 (11/2005).
• [11] “Gaoresearch online simulator”, http://www.gaoresearch.com/ products/speechsoftware/speechsoftware.php
• [12] A. W. Rix, J. G. Beerends, M. P. Hollier, and A. P. Hekstra, “Perceptual evaluation of speech quality (PESQ) a new method for speech quality assessment of telephone network and codecs”, in Proc. IEEE Int. Conf. Acoust., Speech Sig. Proces., Salt Lake City, USA, 2001, pp. 749–752.
• [13] L. Ding and R. A. Goubran, “Assessment of effects of packet loss on speech quality in VoIP”, in Proc. 2nd IEEE Int. Worksh. Hapt., Audio Visu. Env. Their Appl. 2003, HAVE 2003, Ottawa, Canada, 2003, pp. 49–54.
• [14] M. Varela, I. Marsh, and B. Gronvall, “A systematic study of PESQ’s behavior”, in Proc. Conf. MESAQIN 2006, Prague, Czech Republic, 2006.
• [15] J. G. Beerends, E. Larsen, and N. Iyer, “Measurement of speech intelligibility based on the PESQ approach”, in Proc. Conf. MESAQIN 2004, Prague, Czech Republic, 2004.
• [16] J. Holub and A. Drozdová, “Proprietary low bit-rate radio-communication network – objective and subjective speech transmission quality assessment”, in Proc. Conf. MESAQIN 2006, Prague, Czech Republic, 2006.
• [17] W. A. Rix, “Comparison between subjective listening quality and P.862 PESQ score”, in Proc. Conf. MESAQIN 2003, Prague, Czech Republic, 2003.
• [18] J. Holub, R. Šmíd, and M. Bachtík, “Child listeners as the test subject – comparison with adults and P.862”, in Proc. Conf. MESAQIN 2003, Prague, Czech Republic, 2003.
• [19] S. Pennock, “Accuracy of the perceptual evaluation of speech quality (PESQ) algorithm”, in Proc. Conf. MESAQIN 2002, Prague, Czech Republic, 2002.