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[Design and methodology in environmental acoustics]
Sozial- Und Praventivmedizin
|May 1, 1982
Summary
Normative acoustic values are insufficient for assessing noise discomfort. A 4-6 dB(A) increase over background noise is legally recognized as uncomfortable, considering various environmental factors.
Area of Science:
- Environmental acoustics
- Psychoacoustics
- Urban planning
Context:
- Urban acoustics experiments conducted in Geneva reveal limitations of current noise regulations.
- Existing normative values primarily address hearing damage risk, not subjective discomfort.
Purpose:
- To determine appropriate methods for measuring and analyzing noise discomfort in urban environments.
- To establish legally recognized criteria for acoustic discomfort.
Summary:
- Standard acoustic norms are inadequate for evaluating noise-induced discomfort.
- Effective discomfort assessment requires tailored measurement methods considering acoustic load, dynamics, spectrum, and socio-economic factors.
- A 4-6 dB(A) increase above baseline or previous levels is now legally defined as uncomfortable in Geneva.
Impact:
- Legal recognition of a 4-6 dB(A) increase as a threshold for acoustic discomfort.
- Shift in urban acoustics policy towards a more holistic approach to noise assessment.
- Improved understanding of the physiological and environmental factors influencing human perception of noise.