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My research strands in MSA

This article provides an overview of the research strands in MSA, including a review of the past year and plans for the future. It covers topics such as speech technology, patient monitoring, music analysis, and voice over WLAN. The article also highlights current grants and collaborations with various institutions and organizations.

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My research strands in MSA

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  1. My research strands in MSA Barry Cheetham Review of past year Plans for future

  2. Ning Li (Graduates PhD July ‘04) Li-rong He (Graduates PhD July ‘04) Abdul Eshhubi (Graduates M.Phil July ‘04) Lizzie X Ni (Writing up) Yen-ha Hiew (Writing up) Andrew Earis (Year 3) Tolis Tramantzas (Year 2) Vacancy (Post-doc R/A) Personnel

  3. Collaboration • Alex Walker David Tait • Ashley Woodcock (Wythenshawe Hospital) • John Earis (Fazakerley Hospital) • Tony Brown & Richard Barker (EEE UMIST) • ETH (Zurich) Ascom ( Lensburg, Switzerland) • WINFINITY Berlin IHP Frankfurt-Oder • Josef Stefan Inst. Slovenia • BT, Microsoft? • NEWCOM ‘Centre of Excellence’ WP7

  4. Current grants WINDECT : DECT over WLAN NEWCOM : Pending:- Testbed for

  5. Research themes • Voice over WLAN • Speech technology • Patient monitoring • Implementation • Distance learning networks • Music analysis

  6. Speech coding for mobile & VoIP Discrete all-pole modelling applied to speech coding. Sinusoidal transform coding of speech using DAP. Variable bit-rate coding using DAP-STC.

  7. Speech personnel

  8. DAP-STC • 2G GSM uses CELP at 13kb/s+FEC • 3G & IP need AMR down to 2.4kb/s • “Toll” quality • CELP fails at bit-rates below 4kb/s • Use sinusoidal / interpolative coding • DAP more accurate than LPC.

  9. Patient monitoring

  10. Monitoring of chronic cough • Collaboration with Wythenshawe & Fazakerley Hospitals. • Recognition of cough waveforms • Elimination of speech/ background • 24 hour monitoring /data storage • GPRS radio link

  11. Cough monitoring(cont) • Speech recognition techniques • Statistical measurements • Participation in trials • Certain medical procedures may be proved misleading

  12. Low power implementation of DSP for mobile terminals. • Lizzie is in Bristol

  13. Retargetable compiler for low power on CADRE (with DR Tait) • Motivation: • New asynchronous DSP core—CADRE • Retargetable compiler support • Speed, code size & power efficiency • Techniques at software level • Research Objectives: • Methodology for C compilation flow for target. • Results so far • Shown to reduce switching activity at circuit level .

  14. Distance learning networks (LiRong) • Real time over fixed or wireless networks • Flow & congestn control for speech/image/data • Based on measurements of delay, jitter, lost packet probability • New ‘RTMTCP’ for distance learning • Dynamic priority assignment • Adapted to on-line tutorials

  15. Distance learning by Internet • Tolis is here!

  16. Musical Analysis: Andrew Earis

  17. Expressive musical performance analysis • Measure intentional variations in the way notes played. • Timing, dynamics, tone quality, vibrato, etc. • Extract from CD with ref to the score in midi form. • Display to augment the score. • Many applications, e.g. practising, analysis, compression • Classical time-frequency analysis problem.

  18. Voice over WLAN • Integrating DECT PABX with OFDM based IEEE802.11 WLAN • Use single band, e.g. 2.4 GHz • Share resources, simplify maint’nce • Modify DECT radio interface & packetise the speech • Operate in ‘contention mode’

  19. Wireless LAN Cordless phone Laptop AP Cordless phone Laptop PDA LAN connection

  20. Principle: OFDM & single carrier

  21. The future • Ning’s & Li-Rong’s theses • Publish DAP-STC work in full • Grant application for cough work • Grants for VoWLAN / Music • Framework 6

  22. Opportunities Framework 6 Collaboration with ASCOM Spectrum Efficiency call (RCA)

  23. Goals for next year One new student for OFDM work Two successful PhDs & 1 MSc At least 1 grant. 2-3 journal papers + conf.

  24. Publications this year • Two IEEE ICASSP conf. • Two other conf. (Andrew) • One IEE colloquium paper (YH) • 4 medical conf. • COST presentation

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