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dhs0403
dhs0403's picture
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Last seen: 3 months 3 days ago
Joined: Aug 26 2009 - 1:41pm
Resolution

I use a Macbook, Music Streamer and ITUNES/RADIO to access FM stations through the internet.

The metrics for each station include the kbps bit rate and the kHz sample rate.

At the low end, we have stations like KMozart at 32 kbps bit rate and unknown sample rate.

At the high end, we have BBC Radio 3 at 320 kbps bit rate and 44.1 sample rate.

My ears can hear the difference, but...

-- since this is streaming music, do these statistics mean anything?
-- If they do, how do they compare to the metrics for Red Book CD?

Thanks,

Dave

jazzfan
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Last seen: 4 months 7 hours ago
Joined: Sep 8 2005 - 8:55am
What they mean
dhs0403 wrote:

I use a Macbook, Music Streamer and ITUNES/RADIO to access FM stations through the internet.

The metrics for each station include the kbps bit rate and the kHz sample rate.

At the low end, we have stations like KMozart at 32 kbps bit rate and unknown sample rate.

At the high end, we have BBC Radio 3 at 320 kbps bit rate and 44.1 sample rate.

My ears can hear the difference, but...

-- since this is streaming music, do these statistics mean anything?
-- If they do, how do they compare to the metrics for Red Book CD?

Thanks,

Dave

Hi Dave,

To answer your questions:

"since this is streaming music, do these statistics mean anything?"

Absolutely! What these statistics are stating are the bit rates for the files where the files have been encoded to some form of lossy compression such as mp3 or wma or real audio. The higher the bit rate the less compression and the less compression the better the sound. By the way the "44.1 sample rate" given by the BBC Raido really doesn't mean anything other than perhaps indicating that the files come a CD.

"If they do, how do they compare to the metrics for Red Book CD?"

A red book CD has a sample rate of 44.1kHz with a bit depth of 16. Please note that sample rate is not the same as bit rate. for a good explanation of what each one means and how and why they are different read this link:

http://thestereobus.com/2008/01/12/sample-rate-and-bitrate-the-guts-of-d...

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