Struct AcousticParams 

pub struct AcousticParams {
    pub speed_of_sound: f32,
    pub cell_size: f32,
    pub time_step: f32,
    pub damping: f32,
}

Parameters for the acoustic wave simulation.

Uses the FDTD (Finite-Difference Time-Domain) method for solving the 2D wave equation.

Fields

speed_of_sound: f32

Speed of sound in m/s (adjustable via UI slider).

cell_size: f32

Cell size (spatial step) in meters.

time_step: f32

Time step in seconds (computed for numerical stability).

damping: f32

Damping factor (energy loss per step, 0-1).

Implementations

impl AcousticParams

pub fn new(speed_of_sound: f32, cell_size: f32) -> Self

Create new acoustic parameters.

The time step is automatically computed to satisfy the CFL condition for numerical stability: dt <= dx / (c * sqrt(2))

Arguments

• speed_of_sound - Speed of sound in m/s (343 m/s in air at 20°C)
• cell_size - Spatial step size in meters

pub fn with_damping(self, damping: f32) -> Self

Create parameters with custom damping.

pub fn courant_number(&self) -> f32

Compute the Courant number (c * dt / dx).

For numerical stability in 2D, this should be <= 1/sqrt(2) ~= 0.707

pub fn is_stable(&self) -> bool

Check if the parameters satisfy the CFL stability condition.

pub fn set_speed_of_sound(&mut self, speed: f32)

Update speed of sound and recompute time step for stability.

pub fn set_cell_size(&mut self, size: f32)

Update cell size and recompute time step for stability.

pub fn wavelength(&self, frequency: f32) -> f32

Get the wavelength for a given frequency.

pub fn cells_per_wavelength(&self, frequency: f32) -> f32

Get the number of cells per wavelength for a given frequency.

Trait Implementations

impl Clone for AcousticParams

fn clone(&self) -> AcousticParams

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AcousticParams

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for AcousticParams

fn default() -> Self

Returns the “default value” for a type.