SPLnFFT Noise Meter - Reviews, Revenue and Downloads - Apple App Store

Description

SPLnFFT is a sound level meter (noise meter) for your iPhone or iPad with many advanced features: frequency analyzer, frequency meter, test signal generator, dosimeter, ...

This soundmeter App is the only one for iOS recommended by the "Laborers' Health and Safety Fund of North America".
Here are extracts from other reviews:
"our favorite sound measurement app" SafetyAwakenings.com
"SPLnFFT is comprehensive, easy to use" TapeOp.com
You will find more reviews here: https://www.facebook.com/SPLnFFT

For daily use, a very simple interface displays the level of exposure: if orange or red, protect your ears !
Professional users will take advantage of a wide range of accurate and reliable measurements: Leq, peak, L10, L95, taktmaximal, frequency analysis, histogram, dosemetering, ... A&C weightings are compliant with ANSI® S1.42 standard. "468" refers to ITU-R 468-4

*** Some KEY INFORMATION *** :
- you absolutely need to allow access to microphone to use this App
- screen rotation must be un-locked
- there are built-in help messages (speech bubble). Need more ? Contact us !: email, blog, Facebook,...
- do not expect to measure as low as 0dB(A) in a quiet room, for these 2 reasons: 30-130dB(A) is the standard usable range for sound level meters and anyway a standard quiet room is around 30dB(A) whereas a typical anechoic chamber is 10 to 20dB(A)

Top digital display is for measurement of sound power in 'slow' mode (averaged on 1s). Central analog display is for 'fast' mode (averaged on 1/8th s). But it can display 'slow' mode as well on request: just click on 'fast' label.
Peak and average values are displayed below and are held until you touch the 'reset' label. The videos on Youtube reveal more details.

Bottom view is a real time FFT (frequency analysis). You will notice that predominant frequency and next one are highlighted. Their frequencies and relative power are displayed on the right. If your input signal is a pure tone then this App will lock on its frequency and display a very accurate result.
Green line is the result of a real time FFT done with 1024 points. Purple line is the averaged FFT (exponential filtering done on power of each frequency). Blue line is a copy of what the purple line was when the user froze the display the last time.
A test tone at 1kHz or a white noise or a pink noise can be generated and sent to right and/or left outputs (select the type you want in BEEP tab). This FFT view - more precisely an upsized version of it - can be exported as a picture in your own photo library, using the camera button (when display is frozen only). This picture can be exported in a mail as well.
The display can be flipped upside-down to ease reading: just rotate your iPhone while holding it vertically.

As for ALL sound meters (thus including this one and all others at any price), calibration is suggested if you want to reach extreme precision. This is enabled in this App thanks to a slider to apply some compensation and to three non volatile memories (choice to be made in MIC. tab). How to ? For calibration, you need and external reference, either a calibrated sound meter, or a calibrated noise source.
Note as well that the tiny embedded loudspeaker cannot reproduce extreme frequencies. Thus if you want to hear a real white or pink noise, you will need to use a quality headphone or HiFi system.

This App was designed seriously for our own needs, by a signal processing expert, and is regularly updated to maintain accuracy and reliability.

***** Any comment, any feedback ? Click on 'support' in iTunes: there is a blog for this. You can even contact us directly by email or through the dedicated FaceBook page (note 'send email' top right) *****

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In-Apps

Export raw data to Dropbox + PRO features

$7.99

Screenshots

User Rating

4.8 out of 5

10 ratings in Australia

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Ratings History

Reviews

Excellent

This is an excellent app. I use it often to check listening levels during music production. I have checked its readings against a dedicated sound level device and they concur. Save your hearing and take it to any concert or event and walk out if it shows 85+dB(A)!

Fabulous little app

This little app has been incredibly useful for our research and development, tracking sources of noise, and comparing noise measurements from different machines. The FFT is good, really handy for identifying noise sources. No thank you very much for all the work in preparing this app. It’s great.

Any chance of a better app icon 😂

Great app however the icon needs work.

M

Good

SPNfftNoisemeter

Sensational app!

Best available

This is the best dB meter I have found. Displays all the info I want, and the readings are accurate. The ability to record and export reading would be a plus.

Brilliant….Extremely accurate

I don’t have to buy a dedicated sound meter. This is just awesome. Very useful. Great design. Excellent features. Love the idea that you can take a photo of the screen and send as an email. Get it….you’ll never regret it. Don’t bother with the rest, this is the best.

The best

After trying numerous other spl apps, this has been the best by far

Great app

After reviewing a plethora of sound level apps, I settled on the SPLnFFT. Compared to the others I felt it offers the best features for price. This was the case at purchase time, and after using the app, further, after purchase I discovered a USA website has also reviewed 30 different apps, and this was top of the tree when results were compared to a $2000+ pro jiggy nloise measurement thingy (technical term). For example one simple use - it could be handy for employees to gauge noise levels to a reasonable level.Employers can then use this to quickly focus on areas where specialised acoustic surveys should be deployed. Or you could just use it to measure frequency and sPL of cicada's outside your front door step ( a most annoying insect here in australia when you're trying to sleep.) For the record, 79.5dB at 9.9-10kHz, and thats only a small tree...... Ultimately i'd like to be able to record fft to acoustically improve setup up the living room...

Store Rankings

Ranking History

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Category Rankings

Chart	Category	Rank
Top Paid	Czechia Utilities	43
Top Paid	Finland Utilities	67
Top Paid	Lebanon Utilities	109
Top Paid	Netherlands Utilities	115
Top Paid	New Zealand Utilities	116

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