Subjective Effect of Change in Sound Pressure Level
Sponsored Links
There are variations in the individual perception of strength of sound.
Studies have shown that in general the sound is perceived twice as loud if the sound level is increased by 10 dB. Similarly - a 20 dB increase in the sound pressure level is perceived as four times as loud by a normal human hearer.
| Sound Awareness | Change in Sound Pressure (dB) |
|---|---|
| Insignificant | 1 |
| Just perceptible | 3 |
| Clearly noticeable | 5 |
| Twice or half as loud | 10 |
| Significant | 15 |
| Much louder or quieter, four times as loud | 20 |
Sponsored Links
Related Topics
• Acoustics
Room acoustics and acoustic properties. decibel A, B and C calculations. Noise Rating (NR) curves. Sound transmission through walls. Calculate sound pressure, sound intensity and sound attenuation.
Related Documents
Human Effects when Exposed to Low-Frequency Noise or Vibration
Physiological effects from low-frequency noise or vibrations.
Maximum Sound Pressure Levels in Rooms
Maximum recommended sound pressure levels in rooms like kindergartens, auditoriums, libraries, cinemas and more.
Sound Intensity, Power and Pressure Levels
Introduction to decibel, sound power, intensity and pressure.
Sponsored Links