What is normal dB SPL?
What is normal dB SPL? Source / observing situation Typical sound pressure level (dB SPL) Leaves fluttering 20 dB Whisper in an ear 30 dB Normal speech conversation for a participant 60 dB Cars/vehicles for a close observer 60-100 dB What is SPL and dB? Sound pressure level (SPL) is the pressure level of a […]