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ABSTRACT

Digital Video Broadcasting - Handheld (DVB-H) specification suite enables reception of point-to-multipoint multimedia transmission with mobile devices. It provides good forward error correction (FEC) capabilities to combat transmission errors. However, transmission errors can be occasionally so severe that FEC decoding fails. The residual transmission errors can degrade the audio-visual quality dramatically. This paper presents an error control method, called synchronized audio redundancy coding. It aims to ensure audio continuity under severe channel error conditions. The presented method was compared to conventional FEC-based error protection of DVB-H in a large-scale subjective experiment. It was found that synchronized audio redundancy coding outperformed the conventional error protection in most test cases.

REFERENCES

• 1: ETSI, "Digital video broadcasting (DVB): Transmission system for handheld terminals (DVB-H)," European Standard EN 302 304, version 1.1.1, Nov. 2004.
• 2: ETSI, "Digital Video Broadcasting (DVB): Framing structure, channel coding and modulation for digital terrestrial television." ETSI standard, EN 300 744, 2001.
• 3: Satu Jumisko-Pyykkö , Vinod Kumar M. V. , Jari Korhonen, Unacceptability of instantaneous errors in mobile television: from annoying audio to video, Proceedings of the 8th conference on Human-computer interaction with mobile devices and services, September 12-15, 2006, Helsinki, Finland [doi>10.1145/1152215.1152217]
• 4: C. Perkins, O. Hodson, and V. Hardman, "A survey of packet loss recovery techniques for streaming audio," IEEE Network, vol. 12, no. 5, pp. 40--48, Sep/Oct 1998.
• 5: C. Perkins , I. Kouvelas , O. Hodson , V. Hardman , M. Handley , J. C. Bolot , A. Vega-Garcia , S. Fosse-Parisis, RTP Payload for Redundant Audio Data, RFC Editor, 1997
• 6: ISO/IEC 14496-3 (2001), "Information technology - Generic coding of moving picture and associated audio information - Part 3: Audio," including ISO/IEC 14496-3 Amd-1 (2001), "Bandwidth Extension," and ISO/IEC 14496-3 Amd-2 (2004), "Parametric Coding for High Quality Audio."
• 7: 3GPP TS 26.290 Rel-6, "Extended AMR wideband codec; transcoding functions."
• 8: ITU-T and ISO/IEC JTC 1, "Advanced video coding for generic Audio visual services," ITU-T recommendation H.264 - ISO/IEC 14496-10(AVC), 2003
• 9: ETSI EN 301 192, "DVB specification for data broadcasting," version 1.4.1, Nov. 2004.
• 10: ITU-R BT.500-11, "Methodology for the subjective assessment of the quality of television pictures," 2002.
• 11: ITU-T P.911, "Subjective audiovisual quality assessment methods for multimedia application," 1998.
• 12: ITU-T P.920, "Interactive test methods for audiovisual communications," 2000.

INDEX TERMS

Primary Classification:
  H. Information Systems
  H.5 INFORMATION INTERFACES AND PRESENTATION (I.7)
      H.5.1 Multimedia Information Systems
          Subjects: Audio input/output

Additional Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.1 Network Architecture and Design

  H. Information Systems
  H.1 MODELS AND PRINCIPLES
      H.1.2 User/Machine Systems
          Subjects: Human information processing

General Terms:
Algorithms, Experimentation, Human Factors, Measurement, Performance

Keywords:
DVB-H, audio redundancy, error resiliency