Sound Analysis

[John Jones]

Hi, I had ran a few tests. My SPL levels are almost identical, yet when I ran the new setup, it was not as loud as the old setup.

I noticed a big drop between 100Hz and 500Hz. How does these frequencys effect a humans ability to hear sound.

Am I correct in saying the new setup has attenuated more sound then the old setup?

Please see PDF View attachment Sound Attenuation.pdf

Much Appreciated.

 

[Dick Rees]

Re: Sound Analysis

Hi, I had ran a few tests. My SPL levels are almost identical, yet when I ran the new setup, it was not as loud as the old setup.

I noticed a big drop between 100Hz and 500Hz. How does these frequencys effect a humans ability to hear sound.

Am I correct in saying the new setup has attenuated more sound then the old setup?

Please see PDF View attachment 8613

Much Appreciated.

I don't want your candy and I'm not getting into your van.

MOM!!!!

 

[Misja Hoen]

Re: Sound Analysis

Unsure about what you mean but i would say pretty severe.

 

[Art Welter]

Re: Sound Analysis

Am I correct in saying the new setup has attenuated more sound then the old setup?

John,

There indeed is less low mid level wherever the "new" measurement was taken.
Attenuation is generally used as a term for reduction in amplitude prior to amplification.

The low mid reduction in your "new setup" could be from floor bounce (dual path length interference) or from a different proximity from walls, reducing low mid reinforcement.
Or it could be a difference in mic location..

Your measured differences are large, a 10 dB difference at 1000 Hz sounds around half or twice as loud, at 20 Hz a 5 dB difference sounds half or twice as loud.

The chart below shows how average hearing responds to different levels.

Art