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Audio Kit is a collection of four tools which are essential for those working in audio, sound and music. A real time Spectrum Analyser, a Scope to display waveforms, an SPL (Sound Pressure Level) Meter, and a Signal Generator producing sine waves, white noise and pink noise. Sweep generation with In App Purchase. -View a real time spectrum of audio with the Spectrum Analyser and identify peak frequencies precisely -View the actual waveform of the audio signal with the Scope -An SPL Meter provides measurement of sound levels using an A-weighting -The Signal Generator provides a sine wave output up to 20,000Hz in 1 Hz steps, along with noise generators for white and pink noise. Sweep generation with In App Purchase ** Spectrum ** FFT (Fast Fourier Transform) is used to calculate