mr spectra is an FFT-based audio spectrum analyzer that comes with built-in weighting filters catering to various audio needs. It includes A-weighting for human hearing, C-weighting for machine sounds, and Z-weighting with no filter. This program offers a unique way to visualize and interact with audio, doubling as a musical mood light for an immersive experience.

With mr spectra, users can customize their analysis by adding decibel, wave, or spectrogram scopes in the settings. The interface allows for easy zooming in and out on frequency and amplitude scales by swiping the screen. Additionally, users can personalize the display by showing or hiding axes, dB values, and Max dB values, as well as changing the color scheme.

Technical settings include selecting color schemes, choosing between solid bars or line graphs, enabling landscape mode for mirroring on TVs, and toggling axes visibility. Scope settings allow for different analyses like Decibel Scope, Sound Wave Scope, and Spectrogram. Users can also adjust Decibel Settings with various filters and control FFT options like windowing type.

mr spectra provides detailed technical specifications, such as input source from the device mic, sound capture in 16-bit PCM mono, a sampling rate of 44.1 kHz, an audio amplitude range of 1 to 32767, and an FFT latency of 23 ms. Decibel calculations are based on rms amplitude relative to a base level of 1 rms, which users can calibrate for accurate dB readings.