AudioTool MOD APK [Paid for free]

Paid

AudioTool APK Features Overview

Detailed Features

AudioTool APK boasts a wide range of features designed for audio analysis, including:

RTA Modes

1/1, 1/3, 1/6, and 1/12 octave RTA modes.

Measurement Types

Leq (Wideband, Octave, Variable Duration)

Sones (Loudness)

RT60 (Wideband, Octave)

Peak Store

Analysis Tools

Spectrogram

Waterfall

Peak Frequency

Impulse Responses

Filter Options

Fast, Medium, & Slow filters

Flat & A/C Weighting

Film industry X Curve

Additional Features

Averaging

SPL Chart Recorder

Noise Criteria (NC and NR)

Signal Generation (White/Pink Noise, Sine, Square, Triangle, Sweep, Log Sweep, Warble, Ramp)

The application also includes a loudspeaker polarity checker and options for left/right (L/R) selection. Users can save and load RTA data, with convenient functions such as pinch to zoom and scrolling.

Technical Details

The AudioTool APK uses Fast Fourier Transforms (FFTs) on microphone samples, employing Hann windowing to reduce aliasing. Real-time calculation of Sound Pressure Level (SPL) allows users to save spectra, which can later be reloaded alongside the live spectrum feature.

User Interactions:

To hide or show buttons, simply tap the screen.

Zooming is facilitated by pinching, and dragging allows you to reposition the scale.

A pair of movable cursors displays SPL and time/frequency values at their respective positions. These cursors can be managed via the menu.

Loudspeaker Polarity Checker

This function enables users to check if a loudspeaker is correctly wired in phase:

1.Connect the AudioTool output to the speaker under test.

2.Select the Polarity option from the signal generator screen and switch back to the RTA screen.

If the speaker is out of phase, "Pol" will display; if in phase, it shows "Pol +++".

Noise Criteria Function

This overlay feature presents NC contours on the 1/1 Octave RTA display while updating the real-time NC value.

Chart Recorder

The Chart Recorder visualizes a moving trace of SPL measurements captured over the previous minutes.

RT60 Measurements

RT60 measurements (which quantify how much reverberation or echo exists in a space) are initiated using either a loud clap or pink noise generated by AudioTool.

Signal Generator

The Signal Generator is capable of producing a variety of waveforms, including White and Pink Noise, as well as Sine, Square, Triangle, and Ramp waves, along with linear and logarithmic sweeps, warbles, and impulses. Each waveform utilizes multiple cycled buffers that refresh randomly, ensuring high-quality randomness in the generated noise.

Typically, frequency accuracy stands around 1%. While sine wave fidelity remains good throughout most of the audio spectrum, other signals may exhibit ringing and decreasing frequency response artifacts in higher ranges, depending on the device used.

By understanding these features, users can fully leverage AudioTool APK for advanced audio measurement and analysis tasks.