Transporter and 24/96 problem/question

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AB

Transporter and 24/96 problem/question
« on: 10 Oct 2009, 10:45 pm »
Trying out the MWTP and have ripped a DVDA disk.

No tags just the "Track01-01[0]-01-[L-R]-24-192000" file names. They are .wav files.

Placed these files in the SC Music Folder and rescanned. The files show up but when I try to play one I get a click out of the speakers and then hash. I am sure it's something simple but I am a total noob at this TP thing so even the simple is beyond me.

I checked that they were ripped and playable by playing a few tracks through Winamp on my PC. They played but didnt sound especially good. I assume Winamp down samples them.

Any help would be great. Thanks

Update:
SC Log file reports this;

[09-10-10 16:09:37.6877] Slim::Formats::Wav::__ANON__ (45) Error: G:\Music\steely dan\everything must go\track-01-01[0]-08-[L-R]-24-192000.wav: seems to be compressed, I can't handle anything other than uncompressed PCM

I ripped via DVDAExplorer. Ripped to wav. 

mgalusha

Re: Transporter and 24/96 problem/question
« Reply #1 on: 10 Oct 2009, 11:27 pm »
From your file name it appears they are 24/192 files. Unfortunately the Transporter doesn't support 192KHz sample rates. They will need to be converted to 24/96 either on the fly with SOX built into the Squeezebox sever or via an external conversion program.

AB

Re: Transporter and 24/96 problem/question
« Reply #2 on: 11 Oct 2009, 12:08 am »
Thanks for the reply.
I was under the impression that the TP would down sample any higher res file to 24/96 so it was unnecessary to convert the files.

Is SOX standard in SC? Or is it an add on plug in?

These files are my first attempt at trying to get High Res into the TP. I was hoping it wouldn't be difficult.  :duh:

AB

Re: Transporter and 24/96 problem/question
« Reply #3 on: 11 Oct 2009, 06:33 pm »
I successfully got a few 24/88.2 files to play by changing settings in "File Format Conversion Setup":
File Format - Stream Format looks like this now...

WAV... WAV - native or FLAC - flac.

Unfortunately, I get dropouts every few seconds streaming these files wirelessly. 99+ signal strength, SC running on my 3gHz XP machine with 1 gB of RAM but still there is this rebuffering. I did  a Network test and 3000kbs ran at 100 and 4000kbs ran avg 92 or so.

Interesting stuff but the learning curve is taking a toll. :roll:


mgalusha

Re: Transporter and 24/96 problem/question
« Reply #4 on: 11 Oct 2009, 09:29 pm »
Unfortunately wireless has a tough time with high resolution files. A number of folks have found the Logitech streamers to work better when using a wired Ethernet connection. If the machine that is serving the files is doing a lot of other tasks you can definitely have dropouts. I use a dedicated box but I'm a computer nerd type. :)

jwes

Re: Transporter and 24/96 problem/question
« Reply #5 on: 13 Oct 2009, 06:45 pm »
So this is confusing to me.  I signed up for Radioio's AUDIOPHILE level of service, which provides 192k streams on their channels.  Now, it does sound better, but I'm playing this through my MW Transporter.  Based on this thread (and just the tech specs) it shouldn't be able to play the 192k feeds, unless the radio signals do not go through the DAC.  Any ideas?  Am I just fooling myself and it's actually not a higher quality feed being played?

Thanks!

jwes

Re: Transporter and 24/96 problem/question
« Reply #6 on: 13 Oct 2009, 06:46 pm »
I use wireless by the way - my laptop is the server - just wireless streaming through my home network...

ted_b

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Re: Transporter and 24/96 problem/question
« Reply #7 on: 13 Oct 2009, 07:24 pm »
So this is confusing to me.  I signed up for Radioio's AUDIOPHILE level of service, which provides 192k streams on their channels.  Now, it does sound better, but I'm playing this through my MW Transporter.  Based on this thread (and just the tech specs) it shouldn't be able to play the 192k feeds, unless the radio signals do not go through the DAC.  Any ideas?  Am I just fooling myself and it's actually not a higher quality feed being played?

Thanks!

I agree that these terms and numbers can be confusing.  You are, in fact, confusing terms (192k bit rate and 192k sample rate).  Your radio's bitrate (192k bits/second) is about 2-3% of what a 24/192k sample rate's HiRez bit rate is. 
Your radio: 192,000 bits per second (a decent, but not great, compressed MP3-quality stream)
cd: 1,411,000 bits per second
hirez 24/96 files (Transporter maximum):  4,390,000 bits per second  or about 23 times more than your radio feed.  A 24/192 file would double that (i.e 45+ times more info)

BPT

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Re: Transporter and 24/96 problem/question
« Reply #8 on: 13 Oct 2009, 07:46 pm »
AB
With the latest Squezebox Server your Transport will play the 24/192 files, but only if in FLAC form. SOX will then play them as 24/96 automatically.
Chris H.

AB

Re: Transporter and 24/96 problem/question
« Reply #9 on: 13 Oct 2009, 08:39 pm »
Thanks for the info guys.

I guess by changing the File Type in SC for WAV the 24/192 files were transcoded to flac and then streamed down sampled at 24/96.
Right?

Will the TP play 24/96 and below in WAV natively?

They did play but not without the TP's buffer emptying faster than the wireless could fill it.

At some point I will set up a wired server. Hopefully that will stream the hirez without problems. I did opt for the TP for its hirez capabilities.

jwes

Re: Transporter and 24/96 problem/question
« Reply #10 on: 13 Oct 2009, 09:29 pm »
So this is confusing to me.  I signed up for Radioio's AUDIOPHILE level of service, which provides 192k streams on their channels.  Now, it does sound better, but I'm playing this through my MW Transporter.  Based on this thread (and just the tech specs) it shouldn't be able to play the 192k feeds, unless the radio signals do not go through the DAC.  Any ideas?  Am I just fooling myself and it's actually not a higher quality feed being played?

Thanks!

I agree that these terms and numbers can be confusing.  You are, in fact, confusing terms (192k bit rate and 192k sample rate).  Your radio's bitrate (192k bits/second) is about 2-3% of what a 24/192k sample rate's HiRez bit rate is. 
Your radio: 192,000 bits per second (a decent, but not great, compressed MP3-quality stream)
cd: 1,411,000 bits per second
hirez 24/96 files (Transporter maximum):  4,390,000 bits per second  or about 23 times more than your radio feed.  A 24/192 file would double that (i.e 45+ times more info)

Great explanation - thanks Ted...

mgalusha

Re: Transporter and 24/96 problem/question
« Reply #11 on: 14 Oct 2009, 03:00 am »
Will the TP play 24/96 and below in WAV natively?

They did play but not without the TP's buffer emptying faster than the wireless could fill it.

At some point I will set up a wired server. Hopefully that will stream the hirez without problems. I did opt for the TP for its hirez capabilities.

Yes, it will play 24/96 natively. Standard wired ethernet is 100megabit, so 100,000,000 bit/second. In reality it won't hit that but it can hit about 95% of that, which is about 20 times what you need to send 24/96 uncompressed wave files.

Lastly, when playing 24/192 using the SOX library, it downsamples them on the server and streams 24/96 to the transporter.