Monochromatic Simulation¶
Monochromatic mode computes the steady-state pressure amplitude for a continuous
wave at the transducer centre frequency fc. The SIR is evaluated per field point
and its Fourier component at fc is taken — returning a 3-D amplitude field
p(x, y, z).
from esdiva.emission import Emission
sim = Emission(tx, monochromatic=True)
p, coords = sim(field_points, method="auto")
# dict input : p.shape == (Nx, Ny, Nz), coords has "x", "y", "z"
# (N,3) input: p.shape == (N_points,), you reshape
When to use¶
- Beam-pattern analysis and −6 dB focal-spot characterisation.
- Comparing transducer geometries or subdivision settings.
- Fast field preview before a full transient run.