Home
AudioAsylum Trader
High Efficiency Speaker Asylum

Need speakers that can rock with just one watt? You found da place.

For Sale Ads

FAQ / News / Events

 

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


Login to access features only available to registered Asylum Inmates.
    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: really? do the math (it's easy!)

Posted by tomservo on March 1, 2017 at 13:12:48:

As Paul points out in your link this is well studied / understood in commercial sound room acoustics is a well known field in commercial sound (as the larger the room volume the more critical all this gets), the reverberant field only exist when the reflected sounds are so random they average out and at audio frequencies this only happens in large rooms. Worth pointing out that when in the reverberant field there is essentially ZERO voice intelligibility and while you can tell the source is music, you are well past understanding words or hearing a stereo image and potentially being able to tell what sound it is. This is the highly muffled / garbled sound one often hears in gyms and some stadiums, a lot of reflected sound and a little direct sound.
What you describe is what happens between the near field (where the direct sound dominates) and reverberant field. The critical distance is as you describe but is not desirable to listen at or past that because of the great loss of articulation AND that distance is strongly dependant on the loudspeakers directivity which increases the near field zone.
"I'm walking around my room right now with the system playing. Walking up close to the speaker (4') and back (16') and I hear nothing like a 12db change. I hear very little change at all and any change I do hear could be due to standing waves, etc."
Hearing isn't measuring it, play pink noise, use a sound level meter to measure it.

Do you hear a 12db drop in SPL in your room going from a 4 foot distance to a 16 foot distance?"
It's about 11dB measured with SH-50's and broad spectrum pink noise.
Best,
Tom Danley
Danley Sound Labs