SPL

SPL is a professional-grade digital sound level meter (decibel meter) for your iPad, iPhone or iPod touch. It includes all of the modes, filters, and features that you would expect from a professional ANSI or IEC Sound Level Meter. All filters and averaging modes meet or exceed the criteria for ANSI Type 1 standards or better. SPL is created from the same team who brought you the Audio Toolbox and ATB Plus.

Category	Price	Seller	Device
Music	$7.99	Andrew Smith	iPhone, iPad, iPod

Store Results -- Uses the same powerful Save / Recall engine as our premier app, AudioTools. Allows storing GPS and time-stamped results, and exporting them to your computer.

You can also use SPL with our calibrated iPhone measurement mic, iTestMic, or iAudioInterface.

The screen flips if you turn the phone upside down, so that you can point the built-in iPhone mic directly at the sound source.

*** Modes: Slow, Fast, Impulse, Peak, and Leq.

*** Filters: A and C weighting, and 10 octave band filters.

*** Includes a resettable Max field to track the highest reading.

*** Includes a reference field (except in Leq mode) so that you can set a reference level and do seat-to-seat comparisons.

The SPL meter can be fully calibrated. It comes preset with the calibration for a typical iPad, iPhone, and iPod Touch. Most iOS devices will be within a few dB of this reading. If you have access, even temporarily, to a calibrated sound level meter, just use the calibration field on the settings scree to match the meter, and you will be accurately calibrated.

Also, see our other professional-grade audio apps: AudioTools, our premier suite of professional-caliber audio and acoustics test apps, Speaker Pop, to test speaker polarity, and RTA, a real-time analyzer for the iPhone.

And, we have a group of calibrated, accurate measurement microphones, including iTestMic,iTestMic2, and iAudioInterface2, that allows full professional results for Type 1 or Type 2 measurements.

This will allow measuring a range from approximately 30 dB SPL to 130 dB SPL. Each mic will include a calibration factor that you will enter into the SPL app for calibrated measurements. This mic will also work with Speaker Pop, our speaker polarity tester, FFT, RTA, ETC, and other acoustical measurement apps in our AudioTools app that is available now.

Also, see our iAudioInterface2 system, which supports any pro test and measurement mic.

Now includes an iPhone internal mic compensation filter, to cancel out the low-frequency roll-off present in the iPhone and other iOS devices.

See our other audio apps, including AudioTools.

Reviews

SPL - Studio Six Digital
Digione

Great app, really easy to use and quite accurate without additional calibration. Compared it to Radio Shack SPL meter and they are both very close.

Does not have the accuracy of professional SPL for tuning home theater systems
Sekhar

I compared it to a SPL from Radioshack and it does not even come close to being accurate. Specifically for tuning subwoofers it is off by 25db.

Pretty sweet app
Antnii

I'm not sure if I'm using it rite or if it's accurate but it's fun to mess with and I was wondering what's the max reading on this thing everything I've tried it on came to 107.6db can it go higher??

Ugh!
Peejayfixie

The new appearance hurts my eyes. Please let me downgrade!

Owner
Phoenix1951

I agree with review 4 very nice software you have your phone with you all the time but not your audio tool box or ivie or other professional tools But you do have your phone John

Context
s0uls3arch3r

I wish people would write reviews within the context of the App. This is an SPL meter that works on you phone. IE a reference tool when you're caught without your pro gear. And as such it works very well. Also, there's a reason for a 105 db threshold on your iPhone. Someone is holding a phone to their ear as you transmit a +db signal. Granted I'm sure no phone manufacturer would knowingly create a reciever that would reach beyond pain and damage thresholds. C'mon people think!

extremely useful
SoundsOKtoMe

It's amazing that anyone gives this application anything less than a stellar review. It does what it's supposed to do, does it well and reasonably accurately. It is preposterously inexpensive. And it's always here, on my phone, ready to use whenever I need it. I do wish that the reviews were flagged and votes not counted when people simply can't figure out how to use it or don't like the way it looks. It renders the "5 star" voting approach meaningless for those of us who are looking for tools that work. It's a tool, not a toy or a game.

Best db meter on for iPhone.
gpmark

Best db meter on for iPhone. I've downloaded and used them all. This one is easy to use, has the most parameter settings, and the ability to record peaks. It is however, strictly a db meter. Some other meters show frequency and plots of readings over time. These would be nice features to see added. Ther one feature I think is clearly missing is the ability to utilize the capabilities of the iPhone to actually transmit the captured data. If this were coupled by the ability to record real time readings this would be an awesome application. Having spectral analysis, and perhaps capture, would make it perfect.