I'm using REW to obtain speaker response measurements and a calibrated SPL meter is required. I have used the RS 33-4050 in the past, but it appears to not want to cooperate after sitting unused for some 10 years. I plan on cleaning the selector knob which seems to be the issue, but it would not hurt to have a backup measurement for verification. Is there a meter obtainable in the US for $50 or so that is "good enough?" What about android SPL meters for the phone, I have downloaded a few, but there is no indication of whether readings are C weighted. Any suggestions on how to obtain good SPL data are appreciated.
These look ok, but I'd go with the Pro for its better accuracy.
https://www.amazon.com/Triplett-Son...tt+TSC-MC1&qid=1628987056&s=industrial&sr=1-3
https://www.amazon.com/dp/B011802QKM/ref=emc_b_5_t
https://www.amazon.com/Triplett-Son...tt+TSC-MC1&qid=1628987056&s=industrial&sr=1-3
https://www.amazon.com/dp/B011802QKM/ref=emc_b_5_t
> no indication of whether readings are C weighted.
?? Most say, though not loud (most users are ignorant). Since most free meters users are trying to show "noise", A is a default, and C (better Z) may be a paid upgrade.
Decibel X PRO - Sound Meter dBA, Noise Detector, SkyPaw Co., Ltd
Decibel X PRO - Sound Meter dBA, Noise Detector - Apps on Google Play
--works OK for me. Really better than a new $49 meter (it rattles and the smoothing is janky); not as good as my 1979 Realistic Needle-meter.
?? Most say, though not loud (most users are ignorant). Since most free meters users are trying to show "noise", A is a default, and C (better Z) may be a paid upgrade.
Decibel X PRO - Sound Meter dBA, Noise Detector, SkyPaw Co., Ltd
Decibel X PRO - Sound Meter dBA, Noise Detector - Apps on Google Play
--works OK for me. Really better than a new $49 meter (it rattles and the smoothing is janky); not as good as my 1979 Realistic Needle-meter.
Attachments
Decibel Meter, Dmytro Hrebeniuk
Decibel Meter - Apps on Google Play
picture: https://play-lh.googleusercontent.c...qdOW2YoiQIa50dgN2xlV-480xkqIouVZUk=w1440-h620
Has A C and Z, is a fine tool. I now like Decibel X (Pro) a bit better, but either is fine.
Sound Meter Pro, Smart Tools co.
Sound Meter Pro - Apps on Google Play
picture: https://play-lh.googleusercontent.c...VllzDr4-SHWGr-FPzAlGBTtR2cRwYTdo2A=w1440-h620
Is excellent for long-term record of sound level, but I can't find ACZ, their website is helpless, and they now want $2.50 to try (it was free last year). You can set the time-line from 30 seconds to 4 hours; I have not seen any other hand-tool for this. Otherwise, you can do better.
Decibel Meter, AOPUTTRIVER, $43, Amazon
https://www.amazon.com/gp/product/B07NYVLCM5
picture: https://m.media-amazon.com/images/I/71Ob0JmF8rL._SL1000_.jpg
Nice clear display with nice backlight. Calibration seems within a few dB, better than most cellphone "meters", adequate for casual use. Response in "C" mode is flat over most of the audio range. Two "flaws": the head rattles, giving odd jumps in reading; the self-noise level appears to be 38dB SPL, so it will not read very soft sounds, even a quiet livingroom.
Decibel Meter - Apps on Google Play
picture: https://play-lh.googleusercontent.c...qdOW2YoiQIa50dgN2xlV-480xkqIouVZUk=w1440-h620
Has A C and Z, is a fine tool. I now like Decibel X (Pro) a bit better, but either is fine.
Sound Meter Pro, Smart Tools co.
Sound Meter Pro - Apps on Google Play
picture: https://play-lh.googleusercontent.c...VllzDr4-SHWGr-FPzAlGBTtR2cRwYTdo2A=w1440-h620
Is excellent for long-term record of sound level, but I can't find ACZ, their website is helpless, and they now want $2.50 to try (it was free last year). You can set the time-line from 30 seconds to 4 hours; I have not seen any other hand-tool for this. Otherwise, you can do better.
Decibel Meter, AOPUTTRIVER, $43, Amazon
https://www.amazon.com/gp/product/B07NYVLCM5
picture: https://m.media-amazon.com/images/I/71Ob0JmF8rL._SL1000_.jpg
Nice clear display with nice backlight. Calibration seems within a few dB, better than most cellphone "meters", adequate for casual use. Response in "C" mode is flat over most of the audio range. Two "flaws": the head rattles, giving odd jumps in reading; the self-noise level appears to be 38dB SPL, so it will not read very soft sounds, even a quiet livingroom.
Cleaning the selector knob on the Radio Shack Sound Meter worked to fix its erratic behavior and I also looked at some of these apps and found the Decibel Meter by Dmytro Hrebeniuk for $1.99 one time payment to be the cheapest for dBC, could not find a free app for C. A calibrated external meter is necessary to calibrate the app, though, as it was way off in its default configuration.
i believe a spl meter calibrator + a measurement mic is a better choice and more accurate then then a spl meter
What the world needs is a $30 calibrator. Strangely enough, REW with a UMIK-1 microphone claims to not need to be calibrated for measurements. Not sure how this works. I am seeing about 2 dB lower reading with a 1KHz test signal through my 20 year old Radio Shack analog SPL meter.