Source:

I) a means of conveying source reference level and

II)user selectable dynamic range control

Rakesh Taori (taori@natlab.research.philips.com)

<mpeg4_celp-request@tnt.uni-hannover.de> with "subscribe" in the body.

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The e-mail address of the reflector is conformance@fivebats.com

2. Continue collaboration with the MMA for the purpose of developing harmonization of MMA DLS2 and MPEG-4 SASBF.

3. Develop complexity metrics for use in creating levels of Structured Audio tools.

4. Review and help to progress those aspects of CD ISO 14496-4 pertaining to Structured Audio.

To continue the preparation of the MPEG-4 audio verification test for music on the internet.

To define the test conditions for the MPEG-4 audio verification test for speech coding and to collect source material.

Sang-Wook Kim (E-mail: swkim@samsung.co.kr)

1. Develop a non-real-time implementation of a complete end-to-end audio-only MPEG-4 session, including encoding, multiplexing, transport, demultiplexing, synchronization, decoding, composition, and presentation. This implementation will respect all normative aspects of the Audio CD, and all normative aspects (including normative composition) of the Systems CD pertaining to audio. The encoding part of the target system will take a composition graph and a set of audio files as input and produce an MPEG-4 FlexMux bitstream. The decoding part will take an MPEG-4 FlexMux bitstream and produce a single audio file for presentation. When possible, this activity will utilize existing software tools in the Systems and Audio reference software.
   The result will be platform-independent insofar as possible, but will run on SGI and Windows platforms in any case. It will be completed in time for demonstration at the Tokyo meeting. The source code will be made available to the IM1 project.
2. Review the Systems and Audio CDs in light of this activity.
3. Develop bitstreams for internal demonstration within MPEG which accurately represent the perceptual quality, high compression, and advanced functionality of MPEG-4 Audio. Develop different bitstreams with public-domain content for public dissemination if possible.

II. Participants

III. Tentative list of activities

IV. Tentative workplan

V. Things to demonstrate (partial list of desired content)

1. Simple high-quality audio w/ T/F coders
2. Simple low-bitrate audio w/ Para, CELP (check overhead)
3. Joint coding of low-bitrate audio (like Bernd’s demo)
4. Software synthesis
5. Software synthesis + voice-over
6. Software synthesis + sound-effects + voice-over + Audio FX (radio play)
7. Reauthoring: Japanese, German versions of (5 & 6)
8. 3-D acoustic environment (for headphone presentation)

To discuss evaluation methods for parametric coders, functionalities (speed change etc) and structured audio

1. To refine methodology for conducting and evaluating core experiments on error resilience
2. To coordinate the preparation of core experiments and verification tests on error resilience

To refine the unified Error Protection scheme

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1. To collect descritions of core experiments, evaluation criteria and common conditions, editing a document and distribute it to the video group
2. Coordination of core experiments
3. Coordination of bit-stream exchange

II. To work on core experiments :

1. To collect descritions of core experiments, evaluation criteria and common conditions, editing a document and distribute it to the video group
2. Coordination of core experiments
3. Coordination of bit-stream exchange

1. To collect descriptions of core experiments, evaluation criteria and common conditions, editing a document and distribute it to the video group
2. Coordination of core experiments
3. Coordination of bit-stream exchange

1. To collect descriptions of core experiments, evaluation criteria and common conditions, editing a document and distribute it to the video group
2. Coordination of core experiments
3. Coordination of bit-stream exchange

2) to discuss and prepare for the technical meeting and a demo of existing ALC technology for the next MPEG meeting

1. To collect descriptions of core experiments, evaluation criteria and common conditions, editing a document and distribute it to the video group
2. Coordination of core experiments

c) Coordination of bit-stream exchange

1. To evaluate the ability of the MPEG-4 Video CD algorithms to allow random access functionalities, e.g. FF/FR
2. To advise the Video Group on possible syntax extensions to improve the current CD

• Refine the inadequacies documented in the Systems study of CD
• Produce and collect normative text to resolve these inadequacies
• Document the MPEG-4 Systems Frequently Asked Questions

Resolve technical issues with Systems CD specification in the area of elementary management (Systems Decoder Model, Object Descriptor, Access Unit Layer, FlexMux),stream

• Provide support to editors of the Systems Version 1 CD in the area BIFS specification for Audio, Video, Natural and Synthetic scene,
• Continue technical collaborations with VRML experts,
• Develop Systems Version 2 specifications (VM and WD) in the area of BIFS,
• Develop Systems Version 2 specifications (VM and WD) in the area of User interaction.

• Apply the IM 1 Software Implementation Workplan with the help of the committed partners,
• Provide MPEG-4 sub-groups for a set of APIs to plug-in MPEG-4 version 1 tools,
• Maintain the Im1 implementation status document
• Support the creation of the MPEG-4 reference code,
• Develop bitstreams exchanges
• Demonstrate the IM 1 Software,
• Provide for software and test streams for demonstrating MPEG-4 capabilities before it becomes an international standard.

• Complete the current Systems Conformance document within one week after the San Jose meeting,
• Refine conformance points definition in MPEG-4 Systems,
• Develop MPEG-4 Systems Conformance specification for Version 1

• Refine AAVS requirements and application,
• Further develop AAVS specifications,
• Edit VM for AAVS,
• Edit WD for AAVS,
• Implement AAVS Verification Model.

• Refine the MPEG-4 Intermedia Format working draft and verification model,
• Refine the object (atom) definitions to complete the specification
• Develop the implementation work plan
• Begin the implementation of this specification with the IM1 implementation as the basis.

1. To coordinate the preparation of the July’98 formal verification tests on MPEG-4 Video Error Resilience.
2. To prepare the test material needed for the verification tests.
3. To refine the workplan document N2061

• Continue body animation specification for phase 2
• Administer and report on core experiments in FBA
• To produce additional FBA data sets and evaluate FBA system as specified in CD
• To continue software and bitstream contributions to IM1

• To collect and update core experiment descriptions
• To administer the work in core experiments
• To identify new work items and further participants
• To work jointly with VRML/SC24 technical experts on geometric compression

1. To generate criteria for evaluating MPEG-7 contributions, and
2. To improve and update the existing, VERY FIRST DRAFT MPEG-7 Evaluation Process Document.

Pascal Faudemay

b) Refine the coding conditions for the pre-screening activity

c) Generate bitstreams and sequences for the revised coding conditions.

• To further perform CGD experiments in order to extend the application of CGD support techniques to SNHC and synthetic audio.
• To finalize the implementation of CGD syntax in the video reference software.

Co-chairman:Marco Mattavelli (EPFL) (Email : marco.mattavelli@epfl.ch)

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• To identify the most relevant applications in the need of Normative Composition
• To identify requirements for normative composition from an application point of view
• To identify potential conformance points
• To identify possible approaches to normative composition
• To see how other groups (e.g. VRML) approach the problem
• To consider possibilities for defining conformance points for scene complexity

Mike Coleman (mc@fivebats.com)

Graham Thomas (graham.thomas@rd.bbc.co.uk)

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To review existing MPEG4 documents relating to version management

• Draw new interested parties into the process for the protection of IPR within the 2^nd phase of MPEG-4 (e.g. Broadcasters, Book Publishers, Serials Publishers, Music Publishers, Photographic Publishers, etc.)
• Conduct a complete analysis of MPEG-4 with respect to IPR Requirements with the view to providing the appropriate set of »general purpose hooks« to facilitate the creation of »secure and trusted MPEG-4 machines« and supported systems.

1. To improve and update the MPEG-7 Requirements, Applications, and Context & Objectives documents,
2. To improve and update the PPD,
3. To collect and evaluate information about other activities related to MPEG-7.