Re: Optimizing a 20Kbps Audio Only Stream
- From: "Neil Smith [MVP Digital Media]" <neil@xxxxxxxxxx>
- Date: Tue, 21 Feb 2006 23:16:52 GMT
On Tue, 21 Feb 2006 11:57:56 -0800, "MrRadio915"
<MrRadio915@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
I'm streaming our Radio Station (www.am91.org) live, using a 20Kbps stereo
stream. I've read thru the the Profile editor.doc and see that I can create
new profiles, but it appears that I can only do it if I'm encoding to a file-
not if I'm running live.
Is it possible to improve the audio quality of a 20kbps stream by using
profiles or other settings within WME without reducing the high frequencies?
Presently, I'm rolling off the HF at 9.5 Khz.
I'm aware that I could increase the bit rate at which we stream, but that's
not an option right now... I'm stuck at 20kbps.
Thanks in advance for any help you might provide.
You could potentially run Mono at 20kbps where you'd end up with quite
a bit better quality (probably up to 32khz or so).
Is it only music or music + voice ?
If the majority of your content is voice audio, you could try the WMV9
voice codecs, which can switch up to cope with music to a certain
headroom automatically.
To do that, select the WMV9 voice codec (say to 16kbps, + 4kbps
overhead). Now go to the Processing tab, you'll be able to select
'Voice codec optimisation'. Choose 'Audio with voice emphasis'.
Ignore the optimisation definiton file, that only gives you in/out
control of the switchover points, and you need to stream live if I'm
correct.
You can only choose voice codecs under CBR schemes.
HTH
Cheers - Neil
.
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