Monday, July 24, 2006

Poor sound quality on Debian (settled)

Did you ever meet the same problem? When playing music or cds, there is a backgroud noise and the sound quality is quite bad.

Set your PCM to about 80% rather than 100%

Pulse code modulation (PCM) is a standard method of encoding analog audio signals in digital form.

So it seems that debian is not dealing well with sound encoding and decoding currently.

Monday, July 17, 2006

Element Uniqueness

Element Uniqueness

I was reading on the topics reductions and lower bounds (Combinatorial Algorithms) when met the problem again.

Definition: Given a list of n numbers x_1,x_2,...,x_n, whether any two of them are equal.

Thursday, July 6, 2006

Artificial Intelligence

We are stepping from floor one to floor two. To reach floor 3, there is a long way to go.