downsampling

Posted by: Serge on 15 July 2013

Hello all,

It might be a basic question but I checked on Naim's knowledge base and I didn't get my answer, so I'm referring to you.

I have a UnitiQute 24/96 and I wonder if I can downsample my 192 Khz files to 96.

Thanks

Posted on: 15 July 2013 by Harry

You can (with appropriate hardware and software).

It won't.

But it will play any 24/96 file you point at it.

Posted on: 15 July 2013 by RaceTripper

You will have to configure the UPnP server to do the downsampling before it send the stream to the Qute. A 24/96 Qute cannot do anything with 24/192 files. It will simply reject the stream.

Posted on: 15 July 2013 by Serge

Thank you Harry and RaceTripper !

Posted on: 15 July 2013 by Simon-in-Suffolk

Hi Serge, you can indeed downsample. However just like over sampling it needs to be done carefully if artefacts are not to be introduced. Good news is it can be all done in software, but chose quality software that ideally uses FIR or IIR filtering - this filters the sound before samples are thrown away. So if you go from 96kHz to 48kHz every other sample will be discarded..

If you see software saying it uses a polyphase filter this is good and it is focussing on only the data that is not to be discarded.

Simon

Posted on: 15 July 2013 by pcstockton

Adobe Audition should work well for this.

Foobar may be able to do it correctly and is free.

I am not a big fan of downsampling "on the fly" even with a studly server like J River Media Center but it can surely be easily done.

-patrick

Posted on: 21 July 2013 by J Saville

I believe Asset UPNP can do this on the fly.

http://www.dbpoweramp.com/asset-whs-manual.html

Explained towards the bottom of the page.