ultrasonic op• Data kinds: none → table (an op determined by its arguments alone — it takes no image or data input)
• Call: import fullseye as fs; fs.ledger.acoustic_layer_stack(layers=(('silicon', 0.0001), ('sio2', 2e-06)), substrate='silicon', couplant='water', allow_unverified=False) (to call the implementation directly, import ultrasound; ultrasound.acoustic_layer_stack(layers=(('silicon', 0.0001), ('sio2', 2e-06)), substrate='silicon', couplant='water', allow_unverified=False); from the registry, opsacoustics.get("acoustic_layer_stack"))
Layered stack for normal-incidence pulse-echo: couplant, layers (material, thickness in m) from the top, and a half-space substrate (table).
> The detailed description below is the original text — the summary and the headings are translated.
layers は [(材料, 厚さ [m]), ...](上から)。材料は表の名前(acoustic_material_table)か {"rho", "c", "alpha0", "alpha_n", "name"} の dict。層は 0 枚でもよい(結合液と基板の 1 界面)。返りの interfaces は上から couplant|layer0, layer0|layer1, …, layerN-1|substrate の名前、t_interfaces は最初の界面からの往復時間 [s] で 2 Σ d_j / c_j、depth はその深さ [m]。
Raises ValueError: 厚さが 0 以下・1 m 超・非有限、未知の材料、確かめていない材料(allow_unverified 無し)、ρ・c が 0 以下、減衰が負、層が 256 枚超。
• acoustic_condition_monitoring family guide
• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).
• Operator provenance and references — the sources of the research/methods this op family came from.
• The canonical algorithm (author, year) and its uses are named in the family usage guide above.
• (none yet)
table as input)istft · acoustic_interface_coefficients · pulse_echo_ascan · sam_cscan · echo_phase_polarity · sam_frequency_tradeoff
ultrasonic)acoustic_material_table · acoustic_interface_coefficients · pulse_echo_ascan · sam_cscan · echo_phase_polarity · sam_frequency_tradeoff
*Provenance: ultrasound.py — ACOUSTICS operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.