Howtosignalprocessing
The dB SPL scale is a logarithmic ratio scale used to represent the physical amplitude of sound pressure variations. 0dBSPL relates to a pressure variation of 20µPa, and each 20dB on the scale relates to a 10× increase in pressure variation.
How loud is 100 dB SPL?
85 – 100 decibels: For example, a hair dryer, blender, power lawn mower, forklift, or subway train. 100 – 120 decibels: For example, a bulldozer, impact wrench, or motorcycle. 120 – 140 decibels: Such as, a rock concert, auto racing, or a hammer pounding a nail.
What is 90 dB SPL?
This one is a little more straightforward: as you move up 10 decibels, the noise sounds twice as loud. Compared to a 60 dB sound… 70 dB sounds 2x as loud. 80 dB sounds 4x as loud. 90 dB sounds 8x as loud and so on…
How loud is 80 dB SPL?
80 decibels is fairly loud. It's equivalent to the noise of a busy downtown street. Being loud, it is a noise level that may harm your hearing if you are exposed to it for longer periods (more than 8-10 hours/day). There's no better way to understand how loud 80 dB is than to take examples from everyday life.
What is a good SPL level?
Because a standard rock concert has an approximate SPL of 100-130 db, if you are mixing for any event, you should keep a SPL meter handy and try to keep the SPL at or below 80 db.
