9,396
edits
Difference between revisions of "TL Tool - Sound Transmission Loss Measurement"
Jump to navigation
Jump to search
m
TL Tool - Sound Transmission Loss Measurement (view source)
Revision as of 16:54, 22 May 2026
, 22 MayReverted edits by Lmagimel (talk) to last revision by LaurentM OROS
Tag: Reverted |
m (Reverted edits by Lmagimel (talk) to last revision by LaurentM OROS) Tag: Rollback |
||
| Line 328: | Line 328: | ||
|- | |- | ||
| Phase calibration || (none) || Path to .npz calibration file | | Phase calibration || (none) || Path to .npz calibration file | ||
|} | |||
== Troubleshooting == | |||
{| class="wikitable" style="width:100%;" | |||
! style="background:#6c1a1a;color:white;width:28%;" | Symptom | |||
! style="background:#6c1a1a;color:white;width:36%;" | Likely cause | |||
! style="background:#6c1a1a;color:white;" | Solution | |||
|- | |||
| NVGate not connected || Analyzer off or Ethernet disconnected || Check Ethernet cable and NVGate status | |||
|- | |||
| Missing FRF data || Channels not configured || Click <b>Configure NVGate</b>, then re-run | |||
|- | |||
| TL values all zero or NaN || Incorrect tube geometry || Check x1–x4 positions and tube diameter | |||
|- | |||
| Negative TL values || No phase calibration || Run phase calibration in Acquisition tab | |||
|- | |||
| Frequency range too narrow || Microphone spacing too small || Increase x2−x1 or x4−x3 spacing | |||
|- | |||
| NVGate wrong octave resolution || Previous window reused || Fixed: each resolution uses a dedicated window | |||
|} | |} | ||
| Line 344: | Line 364: | ||
* ISO 9613-1 — ''Attenuation of sound during propagation outdoors — Calculation of the absorption of sound by the atmosphere'' | * ISO 9613-1 — ''Attenuation of sound during propagation outdoors — Calculation of the absorption of sound by the atmosphere'' | ||
* ISO 11654 — ''Sound absorbers for use in buildings — Rating of sound absorption'' | * ISO 11654 — ''Sound absorbers for use in buildings — Rating of sound absorption'' | ||
* [https://www.bksv.com/media/doc/bv0059.pdf Brüel & Kjær BV0059 — Measuring Sound Absorption Coefficient] | |||
* Miki Y. (1990) — ''Acoustical properties of porous materials — modifications of Delany-Bazley models'' | * Miki Y. (1990) — ''Acoustical properties of porous materials — modifications of Delany-Bazley models'' | ||