[sdiy] Popcorn Noise Generator?

[Magnus Danielson]

From: Ian Fritz <ijfritz at earthlink.net>
Subject: Re: [sdiy] Popcorn Noise Generator?
Date: Sat, 09 Jul 2005 10:16:03 -0600
Message-ID: <6.2.1.2.2.20050709101429.03350720 at mail.earthlink.net>

> At 04:55 AM 7/9/05, Magnus Danielson wrote:
> 
> >You are forgetting that the "pop" you hear is the speakers or headphones
> >responce to an unlikely DC shift. We *are* talking low-frequency here!
> 
> But a sudden dc shift has a broadband frequency spectrum!

A single sudden DC shift contains no frequencies. It is just an integrated
dirac delta, but if you analyse it on the jw axis you have no energy, but you
will experience a temporary rise before it fades out.

It is when you have repeating occurances that we can talk about frequencies.

> The pop is real, not a speaker artifact. 

Try doing a single change in DC voltage makes a pop. Compare that to the
action of a lo freq sawtooth or squarewave.

I think you are mixing the issues up.

Cheers,
Magnus