Processing and Transmission of Multimedia Signals

 

(Elaborazione e Trasmissione di Informazioni Multimediali – ETIM)
(Valid since 2010)

Teachers: Dr. Enrico Masala, Prof. Juan Carlos De Martin

Course Syllabus

  • Signals, quantization, SNR, need for signal compression. Lossy compression. Non-uniform quantization. (review only)
  • Voice signals (narrowband and wideband).
  • Voice coding: G.711, log-PCM, DPCM, linear prediction, APCM, ADPCM, G.726.
  • Voice production model. Analysis of voice signal, intelligibility.
  • LPC tecniques.
  • Quality: MOS.
  • Other approaches: MELP, hybrid. Vector quantization, CELP, G.278, G.729, GSM, GSM-AMR.
  • Audio Signals. Audibility threshold. Frequency masking.
  • Perceptual audio coding, psycho-acoustic model.
  • Audio standards: MPEG layer 1,2,3. AAC.
  • Images: introduction, lossless and lossy coding.
  • Lossless coding: run-length, GIF, PNG.
  • Lossy coding: JPEG.
  • Video: introduction. Hybrid codec: differential encoding with motion compensation.
  • Video standards: MPEG-x, H.26x. Scalability
  • Stereoscopic / 3D / Multiview video: principles and standards.
  • Multimedia communication scenarions (VoIP, streaming, etc.)
  • Protocols for multimedia communications: H.323, RTP, RTCP, SDP, RTSP.
  • Techniques for robust real-time multimedia communications over packet networks.
  • Playout buffer, concealment, interleaving, redundancy, FEC, ARQ, rate adaptation.
  • Use of network-provided QoS for multimedia communications (IntServ, DiffServ).
  • Pull-based streaming techniques (HTTP-based), the DASH standard.

See also the official course web page

Exam schedule (in Italian): click here

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