Upsampling and oversampling

[prerich]

Lets talk about the advantages, disadvantages and side effects of Upsampling and oversampling. Alot of the newer high-end CD players are upsamping 16bit/44.1khz content to 24bit/192khz or even 24bit/384khz . Many people have heard the results and state that there is an audible improvement. There can also be downfalls to upsamping such as aliasing and other noticable artifacts can be introduced. Lets chime in and if you have had good success with upsampling and or oversampling ect. lets hear about it!

[mdabb]

Sometimes I liked it and other times I'm not sure I heard any difference................ Depends on what exactly I'm listening to I suppose.

Here's a little article if anyone wants to read it.

http://www.resolutionaudio.com/paper...ersampling.pdf

[prerich]

Originally Posted by mdabb

Sometimes I liked it and other times I'm not sure I heard any difference................ Depends on what exactly I'm listening to I suppose.

Here's a little article if anyone wants to read it.

http://www.resolutionaudio.com/paper...ersampling.pdf

Excellent read! I'm with you, I've heard it improve my cd's in my PC system (I have now retired my Sony ES cd changer). However, with my prior soundcard - the sound actually got worse -this was actually the soundcards fault. I love what I'm hearing! Not new information but information that closly resembles the analog wave form (that's what we hear) all of our digital stuff first goes to ADC then to DAC for reproduction - starts analong goes digital and ends analog. So would you say that the challenge of DAC's is to faithfully reproduce the original analog wave form?

[mdabb]

Originally Posted by prerich

So would you say that the challenge of DAC's is to faithfully reproduce the original analog wave form?

I would say yes, but real world.......... anything that can improve what I'm hearing can't be a bad thing. If what I'm hearing is an illusion, at least let it be a good one.

It also depends on what I am listening to, some things are best as is and some things there is no changing what we hear for the better. It is what it is sometimes.

[kingofgrills]

My PS3 has become my disc spinner of choice in my home theater room. It upsamples CD's via HDMI to 176.4 kHz, and there is noticeable improvement when compared to the standard 44.1 kHz sample rate. There's no additional detail added, but overall the presentation is smoother and better defined.

It certainly doesn't match the performance of SACDs, either on the PS3 or my Yamaha DVD-SD2500. It's great compared to standard CDs though.

[Gremal]

My Omega SACD-2 upsamples all CDs. It's the best CD player I've owned, by far. From the owner's manual:

The Sample-rate converter will convert PCM
(Pulse Code Modulated) signals from a CD
playing to 44.1 kHz, 48 kHz, 88.2 kHz, 96
kHz or 192 kHz sample rate. The signal is
then processed by a 4-times over-sampling
filter before it is fed to the internal DAC
section. In addition, the converted signal is
routed to all digital outputs.