You are here: Service / News

3-day Lecture at Dresden University (Germany)

Blockvorlesung TU Dresden

Participants of the 2016 Lecture

SOUND QUALITY OF AUDIO SYSTEMS

 

Dates: 13th - 15nd March 2017 (9am - 5pm)
Presenter: Prof. Dr. Wolfgang Klippel
Location: Von-Gerber-Bau (Room: GER 038); Bergstraße 53,
01069 Dresden, Germany
Registration Fee: 360 Euro (VAT incl.)
Students and University staff attend free of charge
Please contact Jasmin for more information. 

Attendees

  • Students of Dresden University of Technology and from other universities
  • Engineers of the audio industry active in research & development, manufacturing and quality control 

Key Topics

  • Comprehensive Assessment of audio systems
  • Physical measurement and perceptual evaluation
  • Root cause analysis of signal distortion
  • Designing green speakers - providing more output with higher efficiency and lower cost
  • Active control of electro-acoustical transducers 
  • Measurement of the nonlinear mechanical damping
  • Air nonlinearities in leaky boxes
  • Experimental modal analysis
  • Measurement of smart-phones
  • Active stabilization of voice coil rest position 

Tutorials:

Tutorials will be offered on Monday and Tuesday afternoon for about two hours.
Please see below a selection of topics (subject to change). 

  • How to measure TS parameters accurately
  • Loudspeakers for automotive application 
  • Systematic listening tests using auralization techniques
  • How to measure micro-speakers
  • Introduction to adaptive nonlinear control

The complete list will be announced at the end of December. Attendees will be able to subscribe about 6 weeks prior to the lecture.
Notifications for subscriptions will be mailed by Jasmin. 

More detailed content information:

ELECTRO-ACOUSTICAL MODELLING:

  • Fundamentals - transduction, vibration, radiation
  • Abstraction - models with lumped and distributed parameters
  • Small Signal Performance - linear approximation and transfer function
  • Large Signal Performance - thermal dynamics and nonlinearities
  • Time-varying properties - influence of climate and aging

 

MEASUREMENTS AND ANALYSIS:

  • Persistent excitation - artificial and natural stimuli
  • Monitored signals - electrical, mechanical and acoustical sensors
  • Complex structures - digital and analogue components
  • Sound field - measurements in the near and far field
  • Interaction with the room - direct and diffuse sound part
  • Measurement time - ultra-fast and long-term (power) testing
  • Distortion analysis - linear and nonlinear components
  • System identification - optimal fitting and parameter estimation
  • Transformations - Fourier, wavelet and perceptual modelling
  • Data compression - separation of unique and redundant information 

 

INTERPRETATION AND DIAGNOSTICS:

  • Interpretation - measured symptoms and physical causes
  • Perception - audibility and impact on perceived sound quality
  • Evaluation - selection of optimal drive units for system design
  • Specification - minimal but comprehensive set of data
  • Tolerances - variation of parameters and influences 

Monday, 2017-03-20 14:32 Age: -20 Days