Can you give an example(s) of such apps which are available for use on i-phone?The iphone built in mic has a LF cut that decent SPL apps turn off.
It also has an SPL limiter that causes the 100 dB limit you mention, and again, decent apps turn it off.
So it's not as bad as one might think.
Thanks.Studio 6. I bet there are others, suggest you ask them (if you are buying)? Best way to be sure.
I typically listen to average levels of 75-90 dB SPL, excluding peaks, depending on my mood and music selections. While reading, perhaps 55-70 or lower. I had previously tried NIOSH and a couple other no cost i-phone apps, but now use "Audio Tools" by Studio Six, helpfully suggested by Newman, which did cost $20. I found the video by Amir "How Loud is Loud?" listed above explained the topic clearly. In it, he explains why he measures and reports dB SPL, not various weighted measures such as dBA. The latter are applicable in measuring potentially harmful levels of industrial noise, and are not convertible to dB SPL. My device is not calibrated and cannot accurately measure peaks, but it enables me to compare my preferred listening levels at home with those experienced at a live performance. As we are more sensitive to certain mid frequencies, we perceive them to be louder than lower frequency sounds even when those lower frequencies are higher SPL. In other words, dB SPL are defined physical quantities whereas loudness is based on our frequency dependent sensitivity. Which explains why some music at 90 dB SPL seems no louder to me than other music at 80 dB SPL; the real time analyzer which divides the sound into octaves, or 1/3 octaves, reveals the reason for this is largely the relative amount of energy contained in the low frequency range. In regards to levels changing with varying distance from your speakers, the T60 for my room is about 0.4 seconds from 125 Hz and above (it dips to 0.25-0.05 s in lower frequencies), and my room volume is about 110m^3. As per data on Linkwitz.com site, reverb distance is that distance from the speakers where the level of the direct signal is equal to level of the room signal. G=3 for a dipole speaker; reverb distance= (0.1)(GV/pi*T60)^0.5; which becomes (0.1)*(330/1.256)^0.5= 1.62m My listening distance is 2.44m; (20)*log (listening d/reverb d)= 3.6 dB Which means at my listening position, the "room signal" is 3.6 dB higher than the direct signal from the two speakers. At my listening position with both speakers playing, if the speakers receive a signal of 1W per side, with a sensitivity of 83.7 dB @1 W @1 m, the direct signal from the two speakers is 79 dB SPL and the reverberant signal (3.6 dB greater than direct) is 82.6 dB SPL, which combine to produce 84.2 dB SPL. This may explain why you don't measure a significant change in level as you move closer or further from the speaker.I always thought I'm listening much louder, but SPL meter says never over 90dB at my listening position (7-8 feet from my speakers). This is not all that accurate. It's with an android smart phone and SPL meter app. I've noticed that coming closer to speakers doesn't really affect the result.
I spend most time between 85 and 89dB and that sounds really loud to me.
Hardly? Hopefully the levels are earwax limited.Interesting. My room is 15 × 22 foot and my main chair is at 3/4. Did some spl readings and at spirited levels bass peaks were about 110db but mostly it was around 90db at the most. Hardly ear damaging. I put on Heavan and Hell but didn't test what I can crank that to. Lol My hearing is actually pretty good.
If you Calibrate it.Can my new Umik 1 mic measure accurately sound pressure levels? I assume so but wanted to know if I need another app besides REW.
Sure the maintainer of the app has calibration data for every android phoneIt's with an android smart phone and SPL meter app.
It came with a calibration file. Is that what you mean?If you Calibrate it.
Sure the maintainer of the app has calibration data for every android phone
Assume this is a relative calibration for flat response?It came with a calibration file. Is that what you mean?
Clean ears and recently had a hearing test which was good.Hardly? Hopefully the levels are earwax limited.
1981- 100db, apartment, 3AM
2021- 65db, house, 3PM