About Audio Spectrum Analyzer
Audio Spectrum Analyzer displays a real-time spectrum and spectrogram from the phone’s audio input. The frequency axis can be logarithmic or linear and can show musical note names. Peak detection reports frequency in hertz or as a note and cent offset, and levels can use decibels or A-weighted decibels. Users can record audio as WAV files. The analyzer provides adjustable sample sizes and time windows, with different window functions for changing frequency and time resolution. Pinch, drag, swipe, and cursor gestures help inspect the graph. It can support environmental sound observation, tuning, timing short sounds, or teaching, though measurement accuracy depends mainly on the device and the app has no calibration interface.
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