Thread: Problem with assignment can someone help me?

That's what I like to see, the youth of today being very resourceful. Though it's somewhat off the topic of general mp3car discussion I will attempt to give it a more mp3car'ish feel.

Here we go, so your really asking "what should I expect to see on my AC3 digital out when passed through a cable that has a high pass filter quality" (now that it's more related than it was before) ... A square wave can be created by an infinite sum of sinusoidals of varying amplitudes and frequencies, from what I remember it looked a little like:

squarewave(f0) = cos[f0] + 1/3(cos[3f0]) + 1/5(cos[5f0) + ... 1/111(cos[111f0]) + ...

Anyway a highpass filter is only going to let through the higher frequencies of this relation and so your square wave will look a lot more rounded and will also appear to increase in frequency. Try plotting the above relationship for the first 10 harmonics and you will see the square wave building up and then plot again and only use the second half of the first ten you used and all will become apparent.

Oh and keep up the research ...

Most definantly ... now I can build my carPC's and get paid for it