save_spectrogram_png

acoustic_ofdm::spectrogram

Function save_spectrogram_png 

Source 
pub fn save_spectrogram_png(
    path: &Path,
    x: &[f32],
    fs: f32,
) -> Result<(), Box<dyn Error>>
Expand description

Saves a human-readable spectrogram PNG for a mono waveform.

Parameters:

  • path: output PNG path.
  • x: input mono waveform.
  • fs: sample rate in Hz. Returns:
  • Result<(), Box<dyn Error>>: Ok(()) when the PNG is written.