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Concluded WG Speech Services Control (speechsc)

Note: The data for concluded WGs is occasionally incorrect.

WG Name Speech Services Control
Acronym speechsc
Area Real-time Applications and Infrastructure Area (rai)
State Concluded
Charter charter-ietf-speechsc-03 Approved
Document dependencies
Personnel Chairs David R. Oran, Eric Burger
Area Director Robert Sparks
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Final Charter for 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,
are a number of proprietary ASR, TTS, and SV API's, as well as two
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
these requirements. The working group will then examine existing
media-related protocols, especially RTSP, for suitability as a
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
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
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.


Date Milestone Associated documents
Oct 2006 Submit MRCPv2 specification to IESG

Done milestones

Date Milestone Associated documents
Done Submit Drafts to IESG for publication
Done Submit Internet Draft Describing New Protocol (if required) (standards track)
Done Submit Internet Draft(s) Analyzing Existing Protocols (informational)
Done Requirements ID submitted to IESG for publication (informational)