Tansura: Line Compare

Tansura compares the sounds of short plucks from similar lines on a low-risk tent, tarp, canopy or shade net. Its experimental model estimates relative tautness from the measured pitch and the span you enter. Real-cord accuracy has not been validated.

How it works:

• Name each line by something near it, like "front left pole".
• Measure the part of the line that is free to vibrate, and type it in.
• Pluck each line a few times while the phone listens.
• Read an experimental estimate: A relatively tauter, B relatively tauter, within your comparison band, or not comparable.

Compare only lines of the same cord. Tansura can refuse weak, inconsistent or unsupported input with "Not comparable". These checks do not detect every problem: overlapping sounds can be accepted and produce an incorrect estimate.

Tansura does not measure force, does not say a line is safe, and does not tell you how much to tighten or loosen. You decide what to do with every line.

Working with others: people standing at different lines can join one session from their own phones, over Wi-Fi, a hotspot, Bluetooth or a QR code, and take turns plucking. Everyone sees the same results, and a line becomes the reference only when everyone agrees.

Use it only for covers where a wrong answer cannot hurt anyone or damage anything important. Never use it for climbing, lifting, rescue, fall protection, vehicles, electrical lines, masts, towers, scaffolds or anything that holds up a structure.

Limits: The model does not establish actual force or reliable real-world tension ordering. Stretch, sag, damping, background sounds and microphone processing can change the estimate. Results near the comparison-band boundary can change category. Use only where a wrong estimate has no safety consequence.

Nearby setup exchanges a landmark device label and public pairing data before encrypted measurement exchange begins. Use labels such as "Door anchor" rather than personal information.