Archive for February 2nd, 2012

Mining of Massive Datasets

Found a little gem called “Mining of Massive Datasets” from Jeffrey D. Ullman of “Dragon Book” fame.
The PDF version of the book is downloadable from.

http://infolab.stanford.edu/~ullman/mmds.html

I find it to be a very good read!

Some Comments on the Turtle Beach PX5 wireless headphones

Background:

I wanted a set of wireless headphones for work which where Bluetooth capable (to connect to my iPhone) to listen to music when working in an open landscape, which I find distracting when people are talking all around.

The Good:

The mic. allows for handling calls without having to switch headsets.

Quite light with a nice build feel to them eventhough they are a bit “plastic”.

Good Bluetooth performance, no problems connecting/reconnecting to the iPhone.

The not soo good:

The builtin equalizer presets does not apply when listening to music over Bluetooth.

No Audio/Video Remote Control Profile (AVRCP), which means you have to fiddle with the phone to change tracks, pause/play and not through controls on the headset.

Audio leakage, I find that they leak fairly much risking to disturb your landscape neighbours.

Sometimes there are some initial audio drop-outs which seem to be Bluetooth connection “stabilizing”, but after a few seconds it is up and running and there are no further problems.

No re-chargable batteries.

Summary:

The PX5 is clearly marketed as “Gamer Headsets”, for which I think alot of my issues are non-issues. In retrospect the PX5 was not perfectly suited for my use-case.

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