1 / 12

The Space of the Listener

The Space of the Listener. Yew Tze Ee. Reverberation. Persistance of sound in a particular space after the original sound is produced Caused by echoes ( reflections ) in an enclosed space. Reverberation Time and Speech. Dry speech, without reverberation

luigi
Download Presentation

The Space of the Listener

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Space of the Listener Yew Tze Ee

  2. Reverberation • Persistance of sound in a particularspaceafter the original soundisproduced • Caused by echoes (reflections) in an enclosedspace

  3. Reverberation Time and Speech • Dry speech, withoutreverberation • Speech with a 0.8s reverberation time • Speech with a 2.0s reverberation time • Speech with a 5.0s reverberation time

  4. Reverberation Time and Music • Dry music, withoutreverberation • Music with a 0.6s reverberation time • Music with a 1.5s reverberation time • Music with a 2.5s reverberation time

  5. IdealReverberation Time • Reverberation time (RT60): • Amount of time required for the soundfield to decay 60bB of its original power. • For both speech and music: RT60 < 1s (fromKnudsen)

  6. Concert Hall Acoustics • Sound wavesfrom a stage are deflected by sound panels and distributedthroughout an auditorium

  7. Concert Hall AcousticsDirect sound vs Lateralreflection • Lateralreflection: • Difference in intensity in left/right ear and differentarrival time • Brainsensesbeingenveloped by the music • Characteristics of a good room acoustics • Direct sound: • Same signal in bothears • Feeling of ‘missingsomething’ • E.g. Listeningthroughheadphones

  8. Types of Concert HallsShoe Box Shape • Shoe box shaped halls are good for concert halls because of beneficiallateralreflections • Shoe box concert halls are long, tall and narrow Royal Festival Hall Southbank Center, UK

  9. Types of Concert HallsFan Shaped • Influenced by amphitheatres, theatre and earlycinema • Lack of lateralreflections Liverpool Philharmonic Hall Liverpool, UK

  10. Types of Concert HallsVineyard Terrace • Audience are subdivided • More beneficialreflectionsfromdividingwalls Waterfront Hall Belfast, Northern Ireland

  11. References • http://www.mcsquared.com/problems.htm • http://www.acoustics.salford.ac.uk/acoustics_info/concert_hall_acoustics/?content=shape • http://images.yourdictionary.com/acoustics

  12. THE END Thank You

More Related