iPhone Acoustic Ruler

12 thoughts on “iPhone Acoustic Ruler”

1. 零 影月 says:

   November 14th, 2011 at 3:10 am

   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. Daniel Kim says:

   November 14th, 2011 at 8:32 am

   This reminds me of Sonar CE, a Windows CE application that uses the speaker/mic of an iPAQ PDA as a sonar app.  I’ve not had the patience to configure it properly, but user comments seem to imply that it works.

   http://nerdipedia.com/tiki-index.php?page=Sonar+CE

3. Ian Page-Echols says:

   November 14th, 2011 at 12:38 pm

   There’s also a program to do this included with the OLPC XO machines since the Give One Get One’s were sold.

4. Florian Student says:

   February 19th, 2012 at 6:32 am

   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!

   Florian

1. Bryan says:

   August 28th, 2012 at 12:38 pm

   OK, How do you get it free? The App store want’s $1.99 for it.

2. Bryan says:

   August 28th, 2012 at 12:39 pm

   OK, How do you get it free? The App store wants
   $1.99 for it.

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