Struct augmented_dsp_filters::rbj::FilterProcessor

pub struct FilterProcessor<SampleType: Pow<SampleType, Output = SampleType> + Debug + Float + FloatConst> { /* private fields */ }

An [AudioProcessor] which holds a Filter. Easy to use DSP filter.

After setting the filter type with FilterProcessor::set_filter_type, use the filter with the [AudioProcessor::prepare] and [AudioProcessor::process] methods.

use audio_processor_traits::{AudioBuffer, AudioProcessor, AudioProcessorSettings, AudioContext};
use audio_processor_traits::simple_processor::MultiChannel;
use augmented_dsp_filters::rbj::{FilterProcessor, FilterType};

let mut audio_buffer = AudioBuffer::empty();
audio_buffer.resize(2, 1 * 44100);
let settings = AudioProcessorSettings {
    sample_rate: 44100.0,
    ..AudioProcessorSettings::default()
};
let mut context = AudioContext::from(settings.clone());

let build_filter = || {
    let mut filter_processor: FilterProcessor<f32> = FilterProcessor::new(FilterType::LowPass);
    filter_processor.set_cutoff(880.0);
    filter_processor.set_q(1.0);
    filter_processor
};

let mut filter_processor = MultiChannel::new(build_filter);
filter_processor.prepare(&mut context);
filter_processor.process(&mut context, &mut audio_buffer);

Implementations

impl<SampleType> FilterProcessor<SampleType>

where SampleType: Pow<SampleType, Output = SampleType> + Debug + Float + FloatConst + Sum,

pub fn new(filter_type: FilterType) -> Self

Create a new FilterProcessor with the FilterType and an initial state.

Sample-rate, cut-off, q, gain and slope will be set to defaults, but should be changed.

pub fn set_filter_type(&mut self, filter_type: FilterType)

Change the filter-type

pub fn set_cutoff(&mut self, cutoff: SampleType)

Change the cut-off

pub fn set_q(&mut self, q: SampleType)

Change the q

pub fn set_band_width(&mut self, band_width: SampleType)

Change the bandwidth

pub fn set_center_frequency(&mut self, center_frequency: SampleType)

Change the center-frequency

pub fn set_slope(&mut self, slope: SampleType)

Change the slope

pub fn set_gain_db(&mut self, gain_db: SampleType)

Change the gain

pub fn set_sample_rate(&mut self, sample_rate: SampleType)

Set the sample-rate

pub fn setup(&mut self)

Set-up the filter for playback

Trait Implementations

impl<SampleType> AudioProcessorHandleProvider for FilterProcessor<SampleType>

where SampleType: Pow<SampleType, Output = SampleType> + Debug + Float + FloatConst,

fn generic_handle(&self) -> AudioProcessorHandleRef

impl Default for FilterProcessor<f32>

fn default() -> Self

Returns the “default value” for a type.

impl<SampleType> MonoAudioProcessor for FilterProcessor<SampleType>

where SampleType: Pow<SampleType, Output = SampleType> + Debug + Float + FloatConst + Send + Sync + Sum<SampleType>,

type SampleType = SampleType

fn m_prepare(&mut self, context: &mut AudioContext)

fn m_process( &mut self, _context: &mut AudioContext, sample: Self::SampleType ) -> Self::SampleType