Speech Services Control (speechsc)

NOTE: This charter is a snapshot of the . It may now be out-of-date.

Last Modified: 2009-03-30

Chair(s):

David Oran <oran@cisco.com>
Eric Burger <eburger@standardstrack.com>

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

Robert Sparks <rjsparks@nostrum.com>
Cullen Jennings <fluffy@cisco.com>

* The Real-time Applications and Infrastructure Area Directors were seated during the IETF 65.

Real-time Applications and Infrastructure Area Advisor:

Robert Sparks <rjsparks@nostrum.com>

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:

  • draft-ietf-speechsc-mrcpv2-20.txt

    Request For Comments:

    RFCStatusTitle
    RFC4313 I Requirements for Distributed Control of Automatic Speech Recognition (ASR), Speaker Identification/Speaker Verification (SI/SV), and Text-to-Speech (TTS) Resources