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Author Topic: "Circle with the Line Through It"  (Read 3373 times)

Tim McCulloch

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Re: "Circle with the Line Through It"
« Reply #20 on: February 08, 2013, 02:00:33 am »

Phi-le that one under "regrets".

Silence of the lambdas.
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Patrick Tracy

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Re: "Circle with the Line Through It"
« Reply #21 on: February 08, 2013, 03:01:57 am »

Mike Diack

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Re: "Circle with the Line Through It"
« Reply #22 on: February 08, 2013, 05:32:33 am »

This beta stop.
before we get delta nother awful pun ?.
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Thomas Harkin

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Re: "Circle with the Line Through It"
« Reply #23 on: February 08, 2013, 08:21:05 am »

before we get delta nother awful pun ?.
Oh, come on!  Pi-le it on!
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Stefan Maerz

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Re: "Circle with the Line Through It"
« Reply #24 on: February 08, 2013, 01:45:31 pm »

Whenever I come to prosoundweb, I always head to the basement first. Threads like this are why.


I had a professor a while back who explained phase to us as "kinda the direction the waveform starts" and thus waveforms have positive and negative phase. He was a networking prof attempting to explain how a modem works. I guess he was a little out of his element. Almost drew him a unit circle on the test, but decided to just play along.


Question: Something I've wondered, why is the null set symbol used? Is there some sort of link, or is just a standard?
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Patrick Tracy

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Re: "Circle with the Line Through It"
« Reply #25 on: February 08, 2013, 01:49:20 pm »

Question: Something I've wondered, why is the null set symbol used? Is there some sort of link, or is just a standard?

I don't know, but it's also pretty much the same as the symbol for diameter.

Jeff Carter

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Re: "Circle with the Line Through It"
« Reply #26 on: February 08, 2013, 04:30:36 pm »

Question: Something I've wondered, why is the null set symbol used? Is there some sort of link, or is just a standard?
It's probably the Greek letter phi.

It's customary in physics and engineering to write the angular frequency of a sine wave with a lowercase Greek omega and the phase with a lowercase Greek phi:

sin(omega*t + phi).

Technically, complex numbers are often used so frequently there are terms like exp[i*(omega*t + phi)] but I digress. As my mathematical physics prof once said, complex analysis is all fun and games until somebody loses an i...
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Stefan Maerz

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Re: "Circle with the Line Through It"
« Reply #27 on: February 09, 2013, 10:12:02 am »

It's probably the Greek letter phi.

It's customary in physics and engineering to write the angular frequency of a sine wave with a lowercase Greek omega and the phase with a lowercase Greek phi:

sin(omega*t + phi).

Technically, complex numbers are often used so frequently there are terms like exp[i*(omega*t + phi)] but I digress. As my mathematical physics prof once said, complex analysis is all fun and games until somebody loses an i...
Mathematical physics...that sounds like all sorts of bad things. ;)

Here is a picture. I don't think that the line is vertical enough to be phi.
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Patrick Tracy

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Re: "Circle with the Line Through It"
« Reply #28 on: February 09, 2013, 12:41:50 pm »

It's probably the Greek letter phi.

It looks to me like a globe with a polar axis.
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