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iSpectrum Analyzer is a simple and easy to use audio spectrum analyzer that allows the user to view live audio in a standard frequency plot as well as a waterfall display. The user can adjust the display resolution and save images to disk. Features include: Audio spectrum analyzer. Provides the user with both a spectrum and waterfall frequency display. User selectable resolutions of 5,10 and 20Hz. User selectable 5 and 10 kHz offsets. User selectable Mic Gain. Works with system and USB microphones. Displayed images can be saved to disk. Point-and-Click Frequency Marker.