Audio Kit 2.3

Sinusoid Pty Ltd ❘ Commercial ❘
iOS
out of 4 votes

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Audio Kit presents a comprehensive suite of four indispensable tools tailored for audio, sound, and music professionals. This collection includes a real-time Spectrum Analyser, a Scope for visualizing waveforms, an SPL (Sound Pressure Level) Meter, and a Signal Generator that produces sine waves, white noise, and pink noise.

<ul>
 <li>Spectrum Analyser: Offers real-time spectrum visualization of audio, enabling precise identification of peak frequencies.</li>
 <li>Scope: Allows users to view actual waveforms of audio signals.</li>
 <li>SPL Meter: Measures sound levels with A-weighting, providing resettable minimum and maximum displays.</li>
 <li>Signal Generator: Produces sine waves up to 20,000Hz in 1Hz increments and includes noise generators for white and pink noise. Additional sweep generation functionality is available via In-App Purchase.</li>
</ul>

The Spectrum Analyser employs FFT (Fast Fourier Transform) to calculate and display frequencies in real-time, with options for logarithmic or linear scale visualization. Users can choose from three FFT sizes—8192, 4096, and 2048—allowing for fine frequency resolution down to within 1Hz. Six different FFT window functions—Hamming, Hann, Rectangular, Bartlett, Triangular, and Blackman—provide flexibility in analysis.

The Spectrum Analyser also features a screen capture capability, enabling users to save spectra along with detailed FFT parameters, time, and date for future reference. A single tap freezes the display while maintaining functionality for features such as screen capture.

The Scope display is highly adjustable through pinch gestures in both horizontal and vertical directions. It incorporates zero-crossing detection for smooth waveform representation and allows users to save waveforms via its own screen capture facility.

The SPL Meter continuously monitors sound pressure levels using A-weighting and allows calibration against reference standards. Additionally, it provides a dynamic ticker-style representation of SPL over time.

The Signal Generator supports three output types: sine wave, white noise, and pink noise. Users can finely tune the sine wave frequency with picker wheels to within 1Hz and adjust the volume continuously. The In-App Purchase option enhances the Signal Generator with a sweep generator feature capable of sweeping frequencies both linearly and logarithmically.

User preferences across all applications are preserved between sessions, ensuring a seamless experience. Moreover, each component of the app includes direct access to an extensive help document.

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