Speech Services Control (speechsc)

Last Modified: 2008-05-12

Additional information is available at tools.ietf.org/wg/speechsc

Chair(s):

  • David Oran <oran@cisco.com>

  • Eric Burger <eburger@standardstrack.com>

    Real-time Applications and Infrastructure Area Director(s):

  • Jon Peterson <jon.peterson@neustar.biz>
  • Cullen Jennings <fluffy@cisco.com>

    Real-time Applications and Infrastructure Area Advisor:

  • Jon Peterson <jon.peterson@neustar.biz>

    Mailing Lists:

    General Discussion: speechsc@ietf.org
    To Subscribe: speechsc-request@ietf.org
    In Body: subscribe
    Archive: http://www.ietf.org/mail-archive/web/speechsc/index.html

    Description of Working Group:

    Many multimedia applications can benefit from having Automated Speech
    Recognition (ASR), Text to Speech (TTS), and Speaker Verification (SV)
    processing available as a distributed, network resource. To date,
    there
    are a number of proprietary ASR, TTS, and SV API's, as well as two
    IETF
    drafts, that address this problem. However, there are serious
    deficiencies to the existing drafts relating to this problem. In
    particular, they mix the semantics of existing protocols yet are close
    enough to other protocols as to be confusing to the implementer.

    The speechsc Work Group will develop protocols to support distributed
    media processing of audio streams. The focus of this working group is
    to develop protocols to support ASR, TTS, and SV. The working group
    will only focus on the secure distributed control of these servers.

    The working group will develop an informational RFC detailing the
    architecture and requirements for distributed speechsc control. In
    addition, the requirements document will describe the use cases
    driving
    these requirements. The working group will then examine existing
    media-related protocols, especially RTSP, for suitability as a
    protocol
    for carriage of speechsc server control. The working group will then
    propose extensions to existing protocols or the development of new
    protocols, as appropriate, to meet the requirements specified in the
    informational RFC.

    The protocol will assume RTP carriage of media. Assuming
    session-oriented media transport, the protocol will use SDP to
    describe
    the session.

    The working group will not be investigating distributed speech
    recognition (DSR), as exemplified by the ETSI Aurora project. The
    working group will not be recreating functionality available in other
    protocols, such as SIP or SDP. The working group will offer changes to
    existing protocols, with the possible exception of RTSP, to the
    appropriate IETF work group for consideration. This working group will
    explore modifications to RTSP, if required.

    It is expected that we will coordinate our work in the IETF with the
    W3C Mutlimodal Interaction Work Group; the ITU-T Study Group 16
    Working
    Party 3/16 on SG 16 Question 15/16; the 3GPP TSG SA WG1; and the ETSI
    Aurora STQ.

    Once the current set of milestones is completed, the speechsc charter
    may be expanded, with IESG approval, to cover additional uses of the
    technology, such as the orchestration of multiple ASR/TTS/SV servers,
    the accommodation of additional types of servers such as simultaneous
    translation servers, etc.

    Goals and Milestones:

    Done  Requirements ID submitted to IESG for publication (informational)
    Done  Submit Internet Draft(s) Analyzing Existing Protocols (informational)
    Done  Submit Internet Draft Describing New Protocol (if required) (standards track)
    Done  Submit Drafts to IESG for publication
    Oct 2006  Submit MRCPv2 specification to IESG

    Internet-Drafts:

    Media Resource Control Protocol Version 2 (MRCPv2) (467723 bytes)

    Request For Comments:

    Requirements for Distributed Control of Automatic Speech Recognition (ASR), Speaker Identification/Speaker Verification (SI/SV), and Text-to-Speech (TTS) Resources (RFC 4313) (46875 bytes)
    IETF Secretariat - Please send questions, comments, and/or suggestions to ietf-web@ietf.org.

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