1 Best Audiotool iOS Apps1) iAudioTool SPL, deciBel (dB) and RT60 Meter, Spectrum Analyzer, Signal Generator and Polarity Checker Audio ToolFeatures 1/1, 1/3 & 1/6 octave RTA modes, Leq, RT60 (wideband, and Octave), spectrogram, peak frequency, Fast, Medium & Slow filters, Flat & A/C Weighting, Averaging, SPL Chart Recorder, Noise Criteria (NC), White/Pink Noise, Sine, Square, Triangle, Sweep, Ramp and Impulse signals & loudspeaker polarity checker. Frequency spectrum store & load, RT60 store, and Chart store.Includes ISO Octave Calibration feature - corrects for your device`s microphone response. Also includes wideband calibration. The calibration discs are moved up or down so as to obtain a flat response, ... ($2.99)By Julian Bunn via
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