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Concert halls with strong lateral reflections enhance musical dynamics
Jukka Pätynen1, Sakari Tervo, Philip W Robinson
1Department of Media Technology, School of Science, Aalto University, FI-02150, Espoo, Finland.
Summary
Concert hall acoustics and listener hearing significantly impact musical dynamics, enhancing perceived loudness. Strong lateral reflections in shoebox halls amplify this effect, explaining their acoustic success.
Area of Science:
- Acoustics
- Psychoacoustics
- Music Science
Background:
- Musical dynamics are crucial for concert experiences.
- The role of concert hall acoustics and listener hearing in musical dynamics is understudied.
- Shoebox concert halls are known for their acoustics, but the underlying mechanisms are not fully understood.
Purpose of the Study:
- To investigate the combined effect of orchestral playing, concert hall acoustics, and listener hearing on musical dynamics.
- To explore how room geometry influences the perception of loudness and tonal color.
- To explain the acoustic success of shoebox concert halls through the lens of sound transmission and reception.
Main Methods:
- Analysis of the three-part transmission chain: orchestra, concert hall, and listener.
- Investigating how orchestral dynamics excite high-frequency harmonics.
- Examining the influence of acoustic reflections and binaural directional hearing on perceived sound.
Main Results:
- Forceful orchestral playing emphasizes high-frequency harmonics, altering tone color and increasing sound energy.
- Concert hall geometry dictates the direction of acoustic reflections.
- Binaural hearing amplifies high frequencies from side-arriving sounds, enhancing perceived dynamic range when combined with strong lateral reflections.
Conclusions:
- The interaction between acoustics and hearing significantly shapes musical dynamics.
- Strong lateral reflections in concert halls enhance perceived dynamic range, particularly at forte dynamics.
- This effect provides a scientific explanation for the acoustic superiority of rectangular (shoebox) concert hall designs.
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