Title: SPEECHSC Requirements for W3C MMI Standards
Source: IETF SPEECHSC Work Group
To: W3C Multimedia Interaction Work Group
Contact Persons:
Name: Eric Burger
Tel. Number: +1 603 890 7587
E-Mail: eburger@brooktrout.com
Name: Dave Oran
Tel. Number: +1 978 264 2048
E-Mail: oran@cisco.com
1. Overall Description:
The speechsc Work Group is tasked with developing 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 full description of the SPEECSC Charter, including documents and
milestones, can be found here:
http://ietf.org/html.charters/speechsc-charter.html
A supplemental work group web page can be found here:
http://flyingfox.snowshore.com/i-d/speechsc
2. Background to Request
The consensus of the SPEECHSC work group is that EMMA is the preferred
encoding for speech recognition results for MRCPv2 transport.
It is our plan to require MRCPv2-conforming protocol endpoints to support
EMMA (currently referenced at ). This will
occur once EMMA reaches Candidate Recommendation status. However, it is our
understanding that this will not happen until mid-2005.
Because there is a demand for MRCPv2 today, we need a normative reference to
a recognition markup. The consensus of the SPEECHSC work group is that
NLSML (currently referenced at ) is closest
to our needs. However, there is no normative (Candidate Recommendation or
later) for NLSML.
Until the W3C publishes EMMA as a Candidate Recommendation, MRCPv2 endpoints
will be required to support a different markup. However, once EMMA is
published, it will be the default, required markup for returning recognition
results. This markup will not be called NLSML.
MRCPv2 will include a negotiation mechanism such that follow-on markups to
EMMA will be automatically supported by the protocol.
3. Requests to W3C:
A) Please keep us informed to the progress of EMMA.
B) Please progress EMMA to Candidate Recommendation as fast as possible.
C) It is our intention to reference the NLSML specification, per the W3C
copyright rules specified in the NLSML specification, found at
--