Audio / Spectrum Analyzer

Audio / Spectrum Analyzer is a real-time RTA that displays both the audio waveform and the amplitude spectrum from a microphone input. It supports simultaneous waveform and spectrum views, and offers configurable FFT sizes (1024, 2048, 4096, 8192), window functions, and frequency weighting (Flat, dBA, dBC). The spectrum can be shown on a linear or logarithmic X-axis, with peak hold and octave analysis to simplify monitoring across bands.

Beyond analysis, the extension includes signal generation (sine, triangle, square, saw) and noise generation (white, pink). Users can adjust layout options (waveform only, spectrum only, or both; portrait or landscape), choose background and waveform colors, and tweak display scales. Ads can be removed via in-app purchase. For users needing multiple audio sources, there is a link to the “Multiple Tone Generator” on the settings screen. Use case examples include audio testing, room analysis, and DSP experimentation in real time.