Uri Nieto

After almost a year I did it again. After a nice shower in Harlem. It was so nice, that I started to think about mics. Big, long, black mics.

Here I present a little Python script I wrote to resample 48kHz audio files to 44.1kHz (16 bits).

The script uses a Kaiser Window instead of a Rectangular Window to better filter out the aliasing. Here it is the Kaiser Windowed Impulse Response used in this script:

As you can see, the lower ribs are smoothed out compared to just a impulse response (rectangularly windowed), so that the aliasing will be much more silenced using this Keiser Window. More information in the great article by Julius O. Smith on resampling.

To apply the filter, I used an algorithm based on the “efficient polyphase filter bank with resampling” found on page 129 (Figure 4.3-8d) of the book “Multirate Systems and Filter Banks” by Vaidyanathan.

The code is fully documented. If you have any comments or questions, or find any bug, please let me know.

Oh, and just to let you know: Python is the next and much better version of Matlab.
Alright.

They say Osama Bin Laden is dead. And the press and the people of this country are in big celebration. The streets of NY look like the streets of Barcelona when Barça beats Madrid in a soccer game. And the press is even more surrealistic:

And this is what my roommate recorded yesterday night at Times Square at around 1am (EST time):

(http://www.youtube.com/watch?feature=player_embedded&v=lht_glrUdu4)

Read my roommate’s blog! (that’s an order)

I’ll keep you posted titans.