Would u care to record Temperature, Humidity and calibrate your multimeter?

Why don't you first ask yourself what are trying to accomplish here? What are the requirements for accuracy? What are the main causes of error? Once you know these things, you will realize that it's not necessary to take atmospheric conditions into account or even calibrate multi-meters. I actually have answers that you seek but I won't give them to you because I want you to THINK rather than babble about confirmation bias and the effect of cosmic rays.

The essence of science and engineering is to ask yourself what is the problem that needs to be solved and how to solve it given constraints of time, cost, etc. (engineering). Only a mindless moron would cite confirmation bias and specify the need to calibrate multimeters and measure error from atmospheric conditions before gathering requirements.

P.S. We do this for fun, not for science. If you want science, go read Ethan Winer, Doug Self, nwavguy, or the sound-science section of HF. Please see guideline #6: http://www.superbestaudiofriends.org/index.php?threads/must-read-seven-simple-guidelines.3/

While I am violating guideline #1, I only do this for the greater good and to prevent this site from turning into hydrogen audio.

 

The most I've seen is small frequency shifts. For example, a peak in Grado headphones shifting a few cycles up or down.

Seriously, I tire of all this shit. Why is no one approaching this from square one (see below)?

1. What are trying to accomplish here?
2. What are the requirements for accuracy?
3. What are the main causes of error?

I tire of going in circles. Any more lameness and this thread gets locked and @DANIU gets banned.

 

AFAIK, wavelength and frequency are pretty closely related.

I do not expect significant changes in response in room temperature ranges or even in somewhat less comfortable frequency ranges for most measurement equipment and even transducers.

Putting things in an oven or a freezer is different. But those are not your typical listening conditions.

IMO, temperature and humidity are not relevant parameters when we are talking about typical application ranges.

 

Maybe we should take general relativity into account? The Eistein field and Maxwell equations might show some effect. Don't want to fall into confirmation bias.

 

Yup a lot of academic posing.

 

Please sign off the internet and make some friends.

 

One measurement on 9/13/2011 70F and the other on 12/4/2011 50F. Other factors could include placement imprecision, driver age, etc. No one will be mistaking a Grado for a Sennheiser with a 20F temperature change. Are the results good enough for precision munitions? Probably not. Are they good enough for us to make some sense of them? Most certainly yes.