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Reverberation and sound.

This page contains some sounds that are relevant to Multimedia modules. I will add to it as required.

Here's the sound of me saying the number 1 to 10 in a fairly dry environment, followed by the same sounds in a simulated reverberant environment, with more and more reverberation. The environment is simulated using some code which came from Dr Andrew Abel, but originated, I am led to believe, with work by Campbell et al at the University of the West of Scotland in 2007 or so. The room simulated is 12 by 10 by 3.5m, with the source at 1.6 M high (Z), and 2m out in the X direction, and the receiver at 1.7m high 2M out from the opposite wall. The reverberation characteristics were taken from http://www.soundproofyourhome.com/absorption-coefficient-chart.

The floor is wood on joists, the ceiling is plaster and timber lath; the walls for the most reverberant sounds are made from plasterboard. To get the intermediate levels of reverberation, the wall reflection values were linearly interpolated between all 1's (fully absorbent), and the plasterboard figures.

  1. The original sound.
  2. Sound with level 1 reverberation
  3. Sound with level 2 reverberation
  4. Sound with level 3 reverberation
  5. Sound with level 4 reverberation
  6. Sound with level 5 reverberation
  7. Sound with level 6 reverberation
  8. Sound with level 7 reverberation
  9. Sound with level 8 reverberation
  10. Sound with level 9 reverberation
  11. Sound with full reverberation

Binaurally recorded sound

Some ambient and other noises recorded binaurally - that is, with a microphone in each ear of a PhD. student (James McGeever), somewhere around about 2002. These only make sense when listened to on closed headphones. The extent of the localisation of these sounds varies a lot from person to person.

Email l.s.smith {place the at sign here} cs.stir.ac.uk - Web www.cs.stir.ac.uk/~lss - Mail Computing Science and Mathematics, University of Stirling, Stirling, Scotland, FK9 4LA Contact Details