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Difference between revisions of "TL Tool - Sound Transmission Loss Measurement"
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TL Tool - Sound Transmission Loss Measurement (view source)
Revision as of 11:17, 27 May 2026
, 27 MayAdd 5 screenshot(s): Tube Setup, 2-mic mode, TL Result Tab, Absorption Tab, Multi-Tube Merge
Tag: Undo |
(Add 5 screenshot(s): Tube Setup, 2-mic mode, TL Result Tab, Absorption Tab, Multi-Tube Merge) |
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</pre> | </pre> | ||
[[File:TL_Tool_tube_4mic_100mm.png|center|480px|Tube d'impedance 4 microphones — Ø100 mm default configuration]] | |||
* '''SP''' — Sound source (loudspeaker) | * '''SP''' — Sound source (loudspeaker) | ||
* '''x1, x2''' — Upstream microphones (source side) | * '''x1, x2''' — Upstream microphones (source side) | ||
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* Reflection coefficient R(f) from standing wave decomposition | * Reflection coefficient R(f) from standing wave decomposition | ||
* Absorption coefficient α(f) = 1 − |R|² | * Absorption coefficient α(f) = 1 − |R|² | ||
[[File:TL_Tool_tube_2mic.png|center|480px|Tube configuration for 2-microphone mode (ISO 10534-2)]] | |||
== Step-by-Step Measurement Procedure == | == Step-by-Step Measurement Procedure == | ||
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|} | |} | ||
[[File:TL_Tool_result_fineband.png|center|700px|TL Result tab — fine band (blue) and 1/12 octave bars (orange)]] | |||
=== Absorption Tab === | === Absorption Tab === | ||
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|} | |} | ||
[[File:TL_Tool_result_demo.png|center|700px|TL (left) and absorption coefficient (right) — demo measurement on 3 kg/m² mass law sample]] | |||
=== CSV Export === | === CSV Export === | ||
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The blend zone [f_blend_lo, f_blend_hi] uses a cosine cross-fade, ensuring a smooth transition. | The blend zone [f_blend_lo, f_blend_hi] uses a cosine cross-fade, ensuring a smooth transition. | ||
[[File:TL_Tool_tube_4mic_29mm.png|center|400px|Small-diameter tube (Ø29 mm) for high-frequency measurements]] | |||
== Configuration == | == Configuration == | ||