mr spectra

mr spectra is an fft based audio spectrum analyzer with built-in weighting filters (A-weighting for human hearing, C-weighting for machine sounds and Z-weighting with no filter). Enjoy mr spectra with your music as a musical mood light.Quick tips:* Go to settings and add a decibel, wave or spectrogram scope.* Swipe screen to zoom in or out on frequency and amplitude scales.* Display or hide the X and Y axes. Show or hide the dB and Max dB values.* Reset Max dB.* Move the dB and Max dB values anywhere on the screen by dragging.* Pause/ Play the running spectrum.* Hide menu and play/pause buttons.* Change spectrum color scheme from the app menu. Display Settings:* Select color scheme.* Solid bars or line graphs.* Landscape mode to mirror screen on to your TV.* Show/ hide axes.Scope Settings:* Decibel Scope.* Sound Wave Scope.* Spectrogram.Decibel Settings:* Use A-Weighting, C-Weighting or Z-Weighting filters (dBA, dBC, dBZ).* Show decibel and Max dB values.* Set zero dB level.FFT Options:* Use Hann or rectangular windowing.Technical Details:* Input source: device mic.* Sound captured: 16-bit PCM mono.* Sampling rate: 44.1 kHz.* Audio amplitude range: 1 to 32767.* FFT latency: 23 ms.* Decibel calculations: based on rms amplitude, relative to a base level of 1 rms. The base level can be adjusted by user to calibrate dB levels.