1. Join Now

    AVForums.com uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

What's the difference between "upsampling" and "oversampling"??

Discussion in 'AV Pre-Amp/Processors & Power Amps' started by dynamic turtle, Jul 28, 2004.

  1. dynamic turtle

    dynamic turtle
    Active Member

    Joined:
    Mar 23, 2004
    Messages:
    1,501
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    41
    Location:
    Central London
    Ratings:
    +17
    Answers on a postcard......
     
  2. Arcangel

    Arcangel
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
  3. dynamic turtle

    dynamic turtle
    Active Member

    Joined:
    Mar 23, 2004
    Messages:
    1,501
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    41
    Location:
    Central London
    Ratings:
    +17
    Thanks Arcangel,

    I'd also like to read an article in favour of upsampling! Clearly Theta have taken a view based on their research, and whilst I'm not challenging their approach, I think it would be healthy to hear another POV.

    Anything on the Perpetual Technologies website? :laugh:

    DT
     
  4. alexs2

    alexs2
    Well-known Member

    Joined:
    Nov 13, 2002
    Messages:
    13,895
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    136
    Ratings:
    +1,674
    As you've no doubt seen,the Perpetual Technologies website is basically just an internet sales site,since that was taken over by AV123...a pity,since the original site included a good bit more detail.

    Oversampling,in it's various flavours,seems well covered in that Theta reference given above,but many others refer to upsampling in the sense that P.Tech do,as increasing the word length of basic 16bit 44.1KhZ Cd data to 24 bit,and increasing the sample rate to 96kHZ and above.
    The "missing "data is then interpolated according to whichever manaufacturer's algorithm is being used.
    Whether or not you believe the reasoning and the theories is a matter for debate,but the results of listening to things like the P1A/P3A have been pretty good in terms of what various reviewers and buyers have found.

    Obviously,i'm biassed,having been a fairly early UK buyer,and I've been very pleased with detail,control,and general sound of the 2 devices....the DAC on it's own is good,but with the interpolator/upsampler,it's a different thing entirely.....the Stereophile review,and HiFi News reviews cover that gorund very well also.

    Hope that helps a bit.
     

Share This Page

Loading...