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What are the sampling rates of Internet Radio?

108.220.52.9
Posted on February 1, 2017 at 11:54:02
oldmkvi
Audiophile

Posts: 10580
Joined: April 12, 2002
 My Mytek reads that it's 48HZ, but don't know if it's 16 or 24 bit.
Any stations in 24/96?
Where can one find that information?
I know most are mp3 quality, but I want to know what I'm getting on USB to Dac.
Does the USB out to DAC automatically provide 24 bits, regardless of whether the Source Station is mp3 quality?
?/48.

I know it's not important, just want to know...

I'm on an iMac/Sierra

 

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RE: What are the sampling rates of Internet Radio?, posted on February 1, 2017 at 16:16:29
Kal Rubinson
Reviewer

Posts: 12435
Location: New York
Joined: June 5, 2002
 I do not know what sources you are using but the VAST majority are streaming MP3 (or other lossy CODECs) at sub-CD sampling rates. It is likely you are just seeing your DAC's minimum bitrate displayed.

 

RE: What are the sampling rates of Internet Radio?, posted on February 1, 2017 at 18:55:11
Mike B.
Audiophile

Posts: 26350
Location: OR
Joined: September 27, 1999
Contributor
  Since: September 1, 1999
 As noted, most stream in varying quality at MP3 quality. Typically 48 - 320 kbps. There are a few like Tidal that offer CD quality for a monthly fee. Jukebox Radio also has a free FLAC stream they list as 2000kbps.



 

RE: What are the sampling rates of Internet Radio?, posted on February 2, 2017 at 01:06:39
Roseval
Audiophile

Posts: 1845
Joined: March 31, 2008
 The Mytek displays what you have set in the Audio Midi settings of OSX
All audio will be resampled to this setting.


The Well Tempered Computer

 

RE: What are the sampling rates of Internet Radio?, posted on February 2, 2017 at 05:07:51
PAR
 Just to add to Roseval's comment for any readers of this thread using Windows.

In Windows it is just the same for radio streams. The rate displayed on your digital processor will be that set in Windows Sound. That isn't what you are hearing as if you were playing a discrete audio file as far as I am aware. Think of it as an envelope. Inside the envelope is the stream which will be MP3 or AAC at varying rates, according to station, up to 320kB/s. In some player apps you can (or could) hover the cursor over part of the app and a small window appears showing the actual data rate being delivered. That doesn't seem to happen with Win 10.

 

I know, the same w/Dragonfly, which doesn't upsample, AFAIK., posted on February 2, 2017 at 09:18:44
oldmkvi
Audiophile

Posts: 10580
Joined: April 12, 2002
 McIntosh says their Dac in the C2500 only displays what it receives, but it also will display whatever I set in Midi Audio, and it also doesn't upsample like the Mytek, built in up sampling.
Digital Audio is a Can of Worms...!

Thanks to all for replies!

 

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