v0.12.0.0

• New: You can downmix the input of the oscilloscope to mono.
• New: Turbo and a couple of Perceptually Uniform Sequential Matplotlib color maps.
• New: Mel scale frequency distribution.
• New: A spectrogram color legend can be enabled in the configuration dialog.
• New: Lanczos and 4-term Blackman-Harris window function.
  • The latter produces very clean peaks with minimal leakage from strong tones into neighboring bins.
• New: Option to render the window function and weighing function over the spectrum.
  • Only useful to see the shape of both functions.
• New: Zero-crossing trigger for the oscilloscope. Best used with non-music signals such as those generated by foo_input_signal.
• Improved: Visualizations continue without interruption when starting a new track.
• Improved: Performance and numeric stability of the CQT transform.
• Improved: Downsampling of the oscilloscope input should now retain more peak values and produce better representation of large input audio chunks.
• Improved: Tweaked the behavior of the visualizations when changing tracks. They no longer fully reset.
• Improved: Overall code hardening and cleanup.
• Improved: Optimized the FFT analyzer and improved all coefficient mapping modes.
• Improved: Cleaned up the rough edges of the spectrogram.
• Improved: Minor redesign of the Graphs page to make the spectrogram easier to configure.
  • Left/Right and Top/Bottom axis should be more consistent for a horizontal or vertical spectrogram.
• Changed: Peak values continue to animate when the parent window is minimized.
• Changed: Made the CPU/GPU use optimization logic less invasive when the visualization is hidden or minimized to react more predictable to track changes and the end of a playlist.
• Changed: Component group on the Common settings page is now called Diagnostics.
• Breaking Change: The peak hold time and fall rate (was Acceleration) are now expressed in seconds and dB/s respectively to make them independent of the frame rate. The old values will be remapped to the new ranges but some tweaking may be necessary.
• Breaking Change: Multiple graphs used to imply the use of local styles. By default global styles will be used unless you enable the setting Use local style on the Graphs page.
• Fixed: Peak mode configuration was disabled for the Peak / RMS meter.
• Fixed: Minor regressions caused by the introduction of local styles.
• Fixed: Triangular Filter Bank (TFB) coefficient mapping. This mapping will always use frequencies generated using the Mel scale.