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Digital Drive: Re: High Resolution Signal versus Upsampled Signal by Werner Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: High Resolution Signal versus Upsampled Signal posted by Todd Krieger on August 27, 2003 at 22:52:10:
"and truncation of such derived signals to 24 bits really does not really lose anything."Really?
I take then that you have never designed and implemented an oversampling low-pass filter yourself?
Because more often than not, by choice of filter type or the precise nature of the window around your Sinc filter, the resultant coefficients do not sum to unity. In which case the output of the filter must be scaled to remap full-scale in onto full-scale out.
This scaling is a division that applies to all samples, original ones and interpolated ones alike.See what's happening?
Been there. Done that. Got it cast in silicon. And the t-shirt too.
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Topic - upsampling article - solidgore 08:08:38 08/22/03 ( 47)
- Re: upsampling article - Werner 05:31:36 08/27/03 ( 0)
Erroneous Stuff... - Todd Krieger 14:23:36 08/22/03 ( 44)
- Re: Erroneous Stuff... - csown 21:44:29 08/22/03 ( 43)
- Re: Erroneous Stuff... - Todd Krieger 23:39:51 08/22/03 ( 42)
- Re: Erroneous Stuff... - csown 10:56:04 08/23/03 ( 40)
- Re: Erroneous Stuff... - Todd Krieger 21:24:51 08/23/03 ( 39)
- Re: Erroneous Stuff... - csown 23:37:53 08/23/03 ( 38)
- Re: Erroneous Stuff... - Todd Krieger 15:37:44 08/24/03 ( 34)
- Re: Erroneous Stuff... - csown 16:17:17 08/25/03 ( 33)
- This Wasn't as Bad as Expected... - Todd Krieger 21:31:58 08/25/03 ( 31)
- Re: This Wasn't as Bad as Expected... - csown 21:03:54 08/26/03 ( 26)
- A DAC's "Brickwall Filter" is *Not* the Analog Post Filter... - Todd Krieger 01:04:25 08/27/03 ( 14)
- PMD-100 was one with selectable dither - Wavy Davy 07:29:59 08/27/03 ( 8)
- Re: PMD-100 was one with selectable dither - Todd Krieger 09:18:47 08/27/03 ( 7)
- You can lead a horse to water ..... - Wavy Davy 19:54:26 08/27/03 ( 6)
- But Can't Make Him Drink.... - Todd Krieger 22:10:25 08/27/03 ( 5)
- Re: But Can't Make Him Drink.... - Werner 22:19:27 08/27/03 ( 4)
- High Resolution Signal versus Upsampled Signal - Todd Krieger 22:52:10 08/27/03 ( 3)
- Re: High Resolution Signal versus Upsampled Signal - Werner 08/27/03 23:02:15 08/27/03 ( 2)
- Think About It... - Todd Krieger 00:57:23 08/28/03 ( 1)
- Re: Think About It... - Werner 01:38:26 08/28/03 ( 0)
- Re: A DAC's "Brickwall Filter" is *Not* the Analog Post Filter... - Werner 03:58:47 08/27/03 ( 4)
- Domain Dementia... - Todd Krieger 09:10:29 08/27/03 ( 3)
- Re: Domain Dementia... - csown 10:36:24 08/27/03 ( 2)
- Re: Domain Dementia... - Todd Krieger 12:37:14 08/27/03 ( 1)
- sigh ... - Werner 22:43:03 08/27/03 ( 0)
- Re: This Wasn't as Bad as Expected... - Werner 22:27:06 08/26/03 ( 10)
- Defining upsampling. - csown 08:33:56 08/27/03 ( 9)
- Re: Defining upsampling. - Werner 22:52:31 08/27/03 ( 0)
- Re: Defining upsampling. - Ted Smith 16:07:46 08/27/03 ( 7)
- Re: Defining upsampling. - rfbrw 06:59:09 08/28/03 ( 6)
- Re: Defining upsampling. - Werner 08:20:46 08/28/03 ( 5)
- Re: Defining upsampling. - rfbrw 19:44:47 08/28/03 ( 3)
- Re: Defining upsampling. - Werner 22:36:48 08/28/03 ( 2)
- Re: Defining upsampling. - rfbrw 15:04:47 08/29/03 ( 1)
- Re: Defining upsampling. - Werner 22:34:07 09/2/03 ( 0)
- Re: Defining upsampling. - Todd Krieger 11:31:43 08/28/03 ( 0)
- Re: This Wasn't as Bad as Expected... - Werner 23:34:54 08/25/03 ( 3)
- ZOH... - csown 16:50:11 08/26/03 ( 2)
- Re: ZOH... - Werner 22:32:08 08/26/03 ( 1)
- Re: ZOH... - csown 07:43:04 08/27/03 ( 0)
- I'm Not Ignoring You... - Todd Krieger 18:33:48 08/25/03 ( 0)
Upsampling sample provided by philips 963sa - gialitt 02:25:34 08/24/03 ( 2)
- Re: Upsampling sample provided by philips 963sa - Todd Krieger 21:59:55 08/25/03 ( 1)
- Re: Upsampling Products - gialitt 08:53:05 08/26/03 ( 0)
Followed by confused stuff (nt) - rfbrw 07:22:40 08/23/03 ( 0)
Good article in general... - csown 13:23:21 08/22/03 ( 0)