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Topic: [TOS #2] RockFan flaming split (Read 2399 times) previous topic - next topic
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[TOS #2] RockFan flaming split

Reply #1 –
Quote from: Radetzky on
You really believe this is what is being sent to your speakers?  This is what a DAC, even a cheap one, outputs?  Your cute.


Well, no actually, idiot.

If I was using a NOS DAC it would be. (  )

I have an old Audio Alchemy 8x multibit as it happens, and I'd never change it for a .......

........ 'perfect' 1-bit DAC, which I daresay is what you use, and I'm sure it fulfills your every need as true lover of music.

LOL.

[TOS #2] RockFan flaming split

Reply #2 –
Rockfan posted some images of "stair step waveforms." I am curious about how you obtained them. Most audio editors show a realistic representation of what actually comes out of a DAC which, for a continuous sine wave tone, is a smooth sine wave. They will not produce such a "stair step" display. What program does?

[TOS #2] RockFan flaming split

Reply #3 –
Quote from: AndyH-ha on
Rockfan posted some images of "stair step waveforms." I am curious about how you obtained them. Most audio editors show a realistic representation of what actually comes out of a DAC which, for a continuous sine wave tone, is a smooth sine wave. They will not produce such a "stair step" display. What program does?


For gawd's sake.

Look, those are screen grabs from zooms of high frequency sines, or rather, sines quantized with 16/44 PCM (from good-old Goldwave).

At 18, 20, and 21KHz, to be precise, as clearly stated in the post.

Before someone starts droning on about how "you can't hear that high, so they're irrelevent", they are nonetheless well inside the touted bandwidth of CD.

The "stairs" are invididual samples, that is to say, they represent 1/44100th of a second , exactly as you will see in the vast majority of audio editors, and in fact of the actual waveform prior to digital filtering.

Let me repeat, for your and everyone elses' benefit THIS IS EXACTLY HOW THESE FREQUENCIES ARE QUANTIZED AT 16/44, AND PRECISLY MIMIC WHAT ONE WOULD FIND IF CAPTURING A REAL-WORLD SINE WITH A 16/44 A/D CONVERTOR.

Do have to remind everyone here what aliasing is?

I find it incredible that  I'm having to make these statements at all.

[TOS #2] RockFan flaming split

Reply #4 –
Quote from: Radetzky on
Quote from: RockFan on
edit >> LP is capable of (slightly wayward) response to 30KHz+. It's a whole different ball-game to CeeDee.


I propose to add a section in the Wiki.  An all of fame for the funnies.


Listen up dufus - I've seen the measurements (e.g by Noel Keywood in Hifi World). Any decent cartridge will have FR flat to 20KHZ within +/- 2dB, and many really good ones carry on up to 30-odd KHZ within 6dB or so.

Here's a clue - find out a little about 'line-contact' syli and very low capcitance wire.