Android Market App: Android 2.3
Android Market App: AudioTool - SPL (deciBel) Meter featuring RT60, Leq, Spectrum Analyzer,
Spectrogram, Chart Recorder, Signal Generator, Polarity Checker.
AudioTool - SPL (deciBel) Meter featuring RT60, Leq, Spectrum Analyzer, Spectrogram, Chart Recorder, Signal Generator, Polarity Checker. Two methods calibration.
Recommended by "Sound " magazine.
NewApk » Android »AudioTool v3.1.1 1/1, 1/3 & 1/6 octave RTA modes, Leq (wideband, Octave, variable duration), RT60 (wideband, Octave), Spectrogram, Peak frequency, Fast, Medium & Slow filters, Flat & A/C Weighting industry X Curve, Averaging, SPL Chart Recorder, Noise Criteria, White/Pink Noise, Sine, Square, Triangle, Sweep, Ramp signals & loudspeaker polarity checker. RTA Store & Load, Hann windows, "Keep Screen On", pinch , scroll .
Exclusive ISO 1/3 Octave Calibration - correct phone's microphone response. Octave calibration discs down a flat response, SPL external meter. Save/Restore files (Dayton Audio iMM-6 also supported).
Use: home theater, audio engineer, car audio, etc
AudioTool FFTs sets recorded microphone. Aliasing reduced windowing. SPL calculated. Spectra may be saved SD card, then loaded live spectrum. The "Store" button stores live spectrum - "Load" shows a list spectra .
, tap . them, tap again. , pinch . , drag (left).
meter uses IIR filters averaging Flat, A weighted response , Medium speeds.
A pair shown RTA Recorder displays: be moved position, display & time/frequency values there. Initially, both cursors mid-screen - simply drag them new position fingertip. turned off Menu.
polarity checker used whether a loudspeaker : connect output speaker under test, select "Polarity" from generator screen, then return RTA screen. If (polarity reversed) AudioTool "Pol ---", otherwise "Pol +++" if phase.
Criteria (available from ) function shows a set contours overlaid 1/1 Octave RTA display calculated real time current NC value shown.
Recorder shows a moving trace SPL measurements over few minutes.
RT60 measurements made component using the "RT60" button, using a loud clap (or similar) . RT60 be used Noise from generator. RT60 times measure how much reverberation there a room.
Generator generates White Noise, Sine, Square, Triangle waves, Sine Wave Sweeps . uses multiple cycled buffers, refreshed randomly so ensuring truly random White/Pink noise. Pink Noise algorithm uses Kemmet's method White in.
accuracy generated periodic signals around 1%. Sine wave fidelity throughout most audio range. Other signals' leading edges show ringing frequency response artifacts upper ranges, depending Android used.
What's New:
v6.1.1 Screen adjustment dpi (480 ppi) devices
Please report bugs/problems/desired Android Market App AudioTool forum via email - thanks!
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https://play.google.com/store/apps/d...apps.AudioTool
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