Propeller Head Plaza

Technical and scientific discussion of amps, cables and other topics.

Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.
You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.

You must login to use this feature.

Inmate Login

By default, logging in will set a session cookie that disappears when you close your browser. Clicking on the 'Remember my Moniker & Password' below will cause a permanent 'Login Cookie' to be set.

Moniker/Username: The Name that you picked or by default, your email. Forgot Moniker?	Examples "Rapper", "Bob W", "joe@aol.com".
Password:	Forgot Password?
	Remember my Moniker & Password ( What's this?)

If you don't have an Asylum Account, you can create one by clicking Here.

Our privacy policy can be reviewed by clicking Here.

Inmate Comments

From:
Your Email:
Subject:

Message Comments

Original Message

RE: Sound level meters, what are they good for?

Posted by geoffkait on August 7, 2020 at 03:51:16:
The best use of a SPL METER is finding the highest sound pressure zones in the room, which are the locations where some kind of acoustic treatment is suggested. Room corners and other locations in the 3-D space of the room, such as first reflection points, can often be measured as having 6-9 dB higher sound pressure level than the average level in the room when music is playing. The more of these high SPL zones you treat the purer the sound will be. A SPL and test tone, e.g. 315 Hz, is a sure-fire way to map out the room, all other methods of finding these sound pressure peaks is like trying to solve x simultaneous equations in x + N unknowns. Tube traps are sometimes not best directly in room corners, sometimes they should be a foot or more away from the room corner. The sound can be worse directly in the corner.