Struct sonogram::SpecCompute

pub struct SpecCompute { /* private fields */ }

This contains all the initialised data. This can then produce the spectrogram, and if necessary, save it to the filesystem as a PNG image.

This Spectrograph is created by SpecOptionsBuilder.

Example

  let mut spectrograph = SpecOptionsBuilder::new(2048)
    .load_data_from_file(&std::path::Path::new(wav_file))?
    .build();
   
  // Compute the spectrogram.  Need export it using `to_png()` or simlar.
  spectrograph.compute();

Implementations

impl SpecCompute

pub fn new(
    num_bins: usize,
    step_size: usize,
    data: Vec<f32>,
    window_fn: WindowFn
) -> Self

Create a new Spectrograph from data.

You probably want to use [SpecOptionsBuilder] instead.

pub fn set_data(&mut self, data: Vec<f32>)

Update the sample data with a new set. Note, none of the settings from the builder are applied, all the samples are used in their raw form.

pub fn compute(&mut self) -> Spectrogram

Do the discrete fourier transform to create the spectrogram.

Arguments

• n_fft - How many fourier transform frequency bins to use. Must be a power of 2.