AudioTool
AudioTool: Fully Featured SPL, dB and Sone Meter, plus Audio Spectrum Analyzer
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AudioTool: Fully Featured SPL, dB and Sone Meter, plus Audio Spectrum Analyzer
SPL (deciBel) Meter featuring RT60, Leq, Sone, Spectrum Analyzer, Spectrogram, Chart Recorder, Signal Generator, Polarity Checker, and Mic calibration.Recommended by "Sound and Vision" magazine. Loved by Audio Engineers worldwide: check out the Reviews! Features: 1/1, 1/3, 1/6 & 1/12 octave RTA modes, Leq (wideband, Octave, variable duration), Sones (Loudness), RT60 (wideband, Octave), Peak Store, Spectrogram, Waterfall, Peak frequency, Impulse, Fast, Medium & Slow filters, Flat & A/C Weighting and film industry X Curve, Averaging, SPL Chart Recorder, Noise Criteria (NC and NR), White/Pink Noise, Sine, Square, Triangle, Sweep, Log Sweep, Warble, Ramp and Impulse signals & loudspeaker polarity checker, L/R select. RTA Store & Load, Hann windows, pinch to zoom, scroll to center.Examples of recent updates (April 2019):v8.0 New Feature: Load one or two stored spectrum files and display both alongside the realtime data.v8.1 New Generator option: swap phase of Right stereo signalv8.2 New Menu option "Set Resolution" allowing to set 4096, 8192, or 16384 sample lengthsv8.3 New 1/12 Octave RTA modeExclusive ISO 1/3 Octave Calibration - can correct for your phones microphone response. Octave calibration discs are moved up or down to obtain a flat response, and match the overall SPL to that of an external meter. Save/Restore of Cal files (popular Dayton Audio iMM-6, MicW i436, also supported).Use: gig measurements, home theater, acoustics, car, etc.AudioTool FFTs sets of microphone samples. Aliasing reduced by Hann windowing. SPL calculated in realtime. Spectra may be saved, then loaded and displayed with the live spectrum. The "Store" button stores the current live spectrum - "Load" shows a list of stored spectra to select.To hide the buttons, tap the screen. To restore them, tap again. To zoom the scale, pinch the screen. To move the scale, drag it up or down (left or right).A pair of cursors can be shown: each can be moved to any position, and will display the SPL & time/frequency values there. The cursors can be turned on and off in the Menu.The loudspeaker polarity checker can be used to check whether a loudspeaker is wired in phase: connect the AudioTool output to the speaker under test, select "Polarity" from the signal generator screen, then return to the RTA screen. If the speaker is out of phase (polarity reversed) AudioTool will show "Pol ---", otherwise "Pol +++" if the speaker is in phase.The Noise Criteria function shows a set of NC contours overlaid on the 1/1 Octave RTA display and the calculated real time current NC value is also shown.The Chart Recorder shows a moving trace of the SPL measurements over the last few minutes.RT60 measurements (how much reverberation or echo there is in a room or hall) can be made using the "RT60" function, triggered using a loud clap (or similar) to or with Pink Noise from the AudioTool generator.The Signal Generator generates White and Pink Noise, Sine, Square, Triangle and Ramp waves, Sine Linear and Log Sweeps, Warbles and Impulses. The generator uses multiple cycled buffers, refreshed randomly so ensuring truly random White and Pink noise. The frequency accuracy of the Signal Generator is typically around 1%. Sine wave fidelity is good throughout most of the audio range. Other signals leading and trailing edges will show ringing and decreasing frequency response artifacts in the upper ranges, depending on the cellphone being used.The above description is a very terse version of the Online Manual, which may be accessed here: https://sites.google.com/site/bofinit/audiotoolThe friendly AudioTool Discussion Group can be used to request features, find/request Calibration files, or report problems. Feedback is always welcome:http://groups.google.com/group/audiotool-discussion-groupDisclaimer: AudioTools performance depends on your Android hardware, and is not guaranteed to meet any audio measurement or safety standards.8.4.2 Like 8.4.1 targets Android 10 (SDK 29) but this version insists on legacy storage support, so allowing access to the sdcard for those running Android 10.
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Loved it for years
Nice useful app.
I use it all the time. A very good app. Wish it had chromecast capabilities. I use it for calibration of church sound systems. Also for checking out music l listen to. It runs from 16hz up to 20k l may be mistaken but most sound and music doesn't have that range anyway. I like its ease of use and varied programs.
Best audio tool for Android without question.
IF YOU HAVE BEEN AWAY FROM THE AUDIO SPECTRUM FIELD FOR A WHILE, YOU WILL HAVE TO EITHER WAIT UNTILL IT ALL COMES BACK TO YOU, OR DEPEND ON THEIR NOT SO GOOD HELP/TEACHING SECTION TO JOGG YOUR MEMORY AND THOSE OF YOU WITH ZERO EXPERIENCE IN THIS AREA,AND ARE JUST LOOKING TO CALIBRATE YOUR CAR AUDIO SETUP? WELL I FEEL BAD FOR YOU GUYS, BUT OTHER THAN THAT A BRILLIANT APP...
Have been using on a Galaxy S7 for years as I slowly build out our home theatre shell layers. I swapped to a S21ultra and the instant read number is consistantly ~10db higher than any single point on a 1/12 Oct scale. S7 is 3" away and shows the same 1/12 scale results, but the instant db report is ~10db lower than the S21U Does it now aggregate? Did I miss a new setting?
Best of the best. I gladly paid for the app.
The app gets the job done. However, some of the tools lack explanation, and you'll have to dive into an online tutorial to learn what they do. The valley tool is unsophisticated and require multiple clicks if you want to refresh. Same for comparing multiple saved curves. The tool has lots of functionality though and is not missing any core features for audio tuning. Also, calibration is compatible with most RTA mics.
I've been looking for something that would compare waveforms and this is it. how do I get it to process more than -10k
Easy to use with great features, full documentation available too. Easy to upload target curves and mic calibration.