Computers & Mobile
iPhone Acoustic Ruler

Here’s a novel way to take measurements using sound waves with an iPhone. German developer Florian Student’s Acoustic Ruler Pro for iOS will measure distances up to 25 meters by clocking the time delay of emitted sound waves. You can use the app with either a pair of headphones or with another iPhone to measure the distance between the two handsets. [via /.]

12 thoughts on “iPhone Acoustic Ruler

  1. The actual process is called “Time Domain Reflectometry” and it’s the same process used in things like cable length testers/break finders and standard ultrasonic distance sensors. This is a pretty impressive implementation.

  2. Hello Adam,

    Thanks for writing this article about my app!

    I wanted to let you know that the app is free for the next few days, so may be you can post a follow up to your article?

    Thanks a lot!


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