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Laurence Payne
Guest
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 Posted: Sun Jun 12, 2005 7:03 pm Post subject: Re: HiFi vs. Computer |
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On Thu, 09 Jun 2005 11:48:47 GMT, "Tim Martin"
<tim2718281@ntlworld.com> wrote:
| Quote: |
OK, let's suppose our signal is a 1kHz sine wave, followed by a period of
silence, followed by a 1kHz sine wave. The amplitude of the sine wave is
the minimum that can be represented in our digital scheme. And let's
suppose our sampling rate is 50000 times a second .... that is, one sample
every 20 microseconds..
Now, I think that an analog signal with a silence of 200 microseconds will
result in the same digital representation as an analog signal with a silence
of 201 microseconds.
Do you agree or not?
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No. You're describing an analogue waveform ending towards infinite
bandwidth. It can't exist in analogue or digital represention
(If it COULD, you'd be thanking the digital system for ironing out
such glitches, not complaining about low resolution :-) |
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Laurence Payne
Guest
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| Posted: Sun Jun 12, 2005 7:03 pm Post subject: Re: HiFi vs. Computer |
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On Thu, 09 Jun 2005 16:08:47 GMT, "Tim Martin"
<tim2718281@ntlworld.com> wrote:
| Quote: | So, you're saying I cannot create a signal comprising a 1kHz sine wave with
small amplitude, followed by a period of silence, followed by a 1kHz sine
wave with small amplitude.
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Not if you want that period of silence to be as short as we've been
discussing. No you can't. You can describe it as a theoretical
possibility. But, lacking resources tending to the infinite, you
can't create it. |
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Engineer
Guest
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| Posted: Wed Jun 22, 2005 3:03 am Post subject: Re: HiFi vs. Computer |
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"calmar" <calmar@calmar.ws> wrote in message
news:slrnd9k37v.4ve.calmar@news.calmar.ws...
| Quote: | Hi,
I'm wondering, how a good computer with a good graphic card + good
speakers can compare to a good HiFi System?
Since good soundcards can be quite expensive, and that only for the
card
itself, I would suspect, that that good computer/soundcard and good
speaker combo can be as good as a good HiFi System?
So I really don't know much about these things.
Thanks for any hints.
calmar
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For a long time now I have plugged my various PC sound card outputs
(line level, not speaker output) into the AUX input of "surplus"
stereo receivers (1970's to 80's vintage, around 15 to 25 wpc) and
used whatever "spare" stereo speakers that were around at the time.
The results have been generally good for CD's played on the PC. But
all this stuff is in in the office so I can't do an A-B comparison
with my main system.
Anyway, try it. What can you lose?
Cheers,
Roger |
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