Class FdnReverbEffect

Namespace

NAudio.Effects

Assembly

NAudio.Core.dll

Feedback-delay-network reverb in the clean, modulated-FDN style described by Signalsmith Audio: eight delay lines mixed each sample through an orthonormal Hadamard matrix, with per-line frequency damping and slow delay-length modulation for a smooth, dense, metallic-free tail. Decay is set directly as an RT60 time. The flagship quality reverb. (Algorithm/topology reference only — original implementation.)

public sealed class FdnReverbEffect : AudioEffect, IAudioEffect, IParameterized

Inheritance

object

AudioEffect

FdnReverbEffect

Implements

IAudioEffect

IParameterized

Inherited Members

AudioEffect.Mix

AudioEffect.Bypass

AudioEffect.LatencySamples

AudioEffect.Configure(WaveFormat)

AudioEffect.Process(Span<float>)

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Constructors

FdnReverbEffect()

Creates the reverb with a sensible default wet/dry mix.

public FdnReverbEffect()

Properties

Damping

High-frequency damping, 0 (bright) to 1 (dark). Default 0.3.

public float Damping { get; set; }

Property Value

float

DecaySeconds

Reverb decay time (RT60) in seconds. Default 2.0 s.

public float DecaySeconds { get; set; }

Property Value

float

ModulationDepthMs

Delay-modulation depth in milliseconds (lush detune). Default 0.5 ms.

public float ModulationDepthMs { get; set; }

Property Value

float

ModulationRateHz

Delay-modulation rate in Hz. Default 0.5 Hz.

public float ModulationRateHz { get; set; }

Property Value

float

Parameters

Generic parameter list (excludes Bypass/Mix, which are on the base).

public IReadOnlyList<EffectParameter> Parameters { get; }

Property Value

IReadOnlyList<EffectParameter>

PreDelayMs

Pre-delay before the reverb tail, in milliseconds. Default 20 ms.

public float PreDelayMs { get; set; }

Property Value

float

Size

Room size multiplier applied to the delay lengths, 0.1–2. Default 1.

public float Size { get; set; }

Property Value

float

Width

Stereo width, 0 (mono) to 1 (wide). Default 1.

public float Width { get; set; }

Property Value

float

Methods

OnConfigure(WaveFormat)

Called by Configure(WaveFormat) after the format is stored. Derived effects allocate and size their sample-rate-dependent state here.

protected override void OnConfigure(WaveFormat format)

Parameters

format WaveFormat

ProcessBlock(Span<float>)

Transforms buffer in place into the fully-wet signal. The base class handles dry/wet mixing and bypass around this call.

protected override void ProcessBlock(Span<float> buffer)

Parameters

buffer Span<float>

Reset()

Clears internal state (delay lines, envelopes, smoothers) so the next block starts as if from silence.

public override void Reset()