Archive for January, 2007

Category Access 0.7.1 Released

Thursday, January 11th, 2007

I’ve released a new version of the Category Access Wordpress 2 plugin. This plugin allows the blog maintainer to restrict access to posts belonging to particular categories on a user-by-user basis.

New changes:

  • Comments management page now shows usernames, emails, and comments. (Thanks to Paul Argoud for the bug report.)

Download it on my code page.

Simulations of Cochlear Implants

Wednesday, January 3rd, 2007

Sensimetrics has a number of interesting simulations of what sounds, speech, and music sound like to a person with cochlear implants. It dramatically shows why having 8 or more electrodes in the implant is important. What it doesn’t show is how a person’s brain can adapt to the sounds so that they don’t seem so foreign. This is especially true for children. That said, we plan to upgrade Christopher to the Advanced Bionics 120-channel processing strategy as soon as possible.

I had trouble with a broken link on the Sensimetrics site, and since the content may disappear, I’ve mirrored the demos here. For the sentences, you might want to try the videos first and see how much lipreading makes a difference. You’ll also notice that musical instruments sound a lot worse than speech. This is something that CI users have reported.

How accurate are these simulations? Well, I saw a talk by a physics professor who lost his hearing as an adult and now has a CI. He says that he can’t tell the difference between the 12-channel demo and the original.

Sentence 1 Audio: 1, 4, 8, 12, 20, Original
Sentence 1 Video: 1, 4, 8, 12, 20, Original
Sentence 2 Audio: 1, 4, 8, 12, 20, Original
Sentence 2 Video: 1, 4, 8, 12, 20, Original
Sentence 3 Audio: 1, 4, 8, 12, 20, Original
Sentence 3 Video: 1, 4, 8, 12, 20, Original

Instrument 1 Audio: 1, 4, 8, 12, 20, Original
Instrument 2 Audio: 1, 4, 8, 12, 20, Original
Instrument 3 Audio: 1, 4, 8, 12, 20, Original
Instrument 4 Audio: 1, 4, 8, 12, 20, Original

Sound 1 Audio: 1, 4, 8, 12, 20, Original
Sound 2 Audio: 1, 4, 8, 12, 20, Original
Sound 3 Audio: 1, 4, 8, 12, 20, Original
Sound 4 Audio: 1, 4, 8, 12, 20, Original
Sound 5 Audio: 1, 4, 8, 12, 20, Original
Sound 6 Audio: 1, 4, 8, 12, 20, Original
Sound 7 Audio: 1, 4, 8, 12, 20, Original