ultrasonic op• Data kinds: table → table
• Call: import fullseye as fs; fs.ledger.pulse_echo_ascan(stack, f0=100000000.0, bandwidth=0.6, water_path=0.002, rate=None, duration=None, n_reverb=40) (to call the implementation directly, import ultrasound; ultrasound.pulse_echo_ascan(stack, f0=100000000.0, bandwidth=0.6, water_path=0.002, rate=None, duration=None, n_reverb=40); from the registry, opsacoustics.get("pulse_echo_ascan"))
RF A-scan of a layered stack for a broadband pulse at normal incidence: transfer-matrix stack response, water path and power-law attenuation (table).
> The detailed description below is the original text — the summary and the headings are translated.
パルスはガウス型スペクトル(中心 f0 [Hz]、−6 dB の比帯域 bandwidth)。応答 S(f) = w(f) · exp(−2ik_w z_w) · R_stack(f)、k = 2πf/c − iα(f)。振幅の単位は「焦点の完全反射体・水の損失なし」の包絡線の山 = 1。時間窓は表面エコーの手前から始まり、n_reverb 回分の積層の往復(残響)を含む。FFT の周期で窓の外の残響が先頭へ折り返すので、長い残響の積層は duration を伸ばす。
返り: t [s] rf analytic(複素)envelope rate f0 bandwidth sigma_t(包絡線の標準偏差)water_path t_front(表面エコーの時刻) t_interfaces(各界面のエコーの時刻 = 表面 + 層の往復)freqs weights response(各周波数の水の経路込みの複素応答)names。Raises ValueError: 印の無い table、f0 ≤ 0 / 10 GHz 超、比帯域 0.02–1.5 の外、水の経路 ≤ 0、サンプリングが帯域の 2 倍未満、サンプル数が上限超え。
• 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.
• poc_sam_hybrid_bonding_voids — py -3.11 examples/poc_sam_hybrid_bonding_voids.py
table as input)istft · acoustic_interface_coefficients · sam_cscan · echo_phase_polarity · sam_frequency_tradeoff
ultrasonic)acoustic_material_table · acoustic_layer_stack · acoustic_interface_coefficients · 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.