Home › Forums › Breakaway Professional Products – [discontinued] › Low bitrate and mono
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October 25, 2010 at 10:45 am #973GuillouMember
Hi,
What is your opinion about streaming in mono with a low bitrate (48k or less) ?
What kind of codec would you prefer (AAC+ ?) ?
To help you, the low bitrate would be for mobile, martphones…
Please help me to make a good choice…
Experts comments from LeeXS and JesseG are welcome ! 🙂October 25, 2010 at 5:23 pm #11523timmywaParticipantFor music, AAC+ is pretty much the way to go for lower bitrate. Down to 24kbps is still really good sounding.
Compatibility is hardly an issue anymore as for the past year or so, iTunes has supported AAC+ streams. So you have Winamp, iTunes and a number of flash-based players that can all play aac+ streams.
Good luck!
October 25, 2010 at 7:51 pm #11524JesseGMemberfor mobile devices, HE and PS profiles of AAC have a pretty broad support in hardware over the last 5 years. most J2ME/Brew included, and of course any of the newer "soft" models with decent CPUs basically all have support for most of MPEG4 that’s used right now.
for mono, HE profile AAC is decent, and depending on the sample rate & the content you can get down below 16kbps (not including transmission protocol overhead).
but with PS profile AAC you can get a pretty darn good sounding stereo 44.1kHz at rates of 24kbps area (without overhead) so… and combine that with the probability of people plugging headphones of some kind into their phones these days… that’s an option that would be silly to ignore – more and more as we progress along the current path.
not to mention 24kbps 44kHz stereo PS-AAC sounding pretty great in cars too. 8)
if you want low bitrate mono for mostly speech only… XIPH’s Speex codec is the way to rock.
http://www.speex.org/October 26, 2010 at 12:16 am #11525sneradioMemberAAC+ @ 24kbps 32kHz stereo sounds fairly decent as my station will demonstrate. Check it out at http://loudcity.com/stations/soft-n-eas … isten.html
October 26, 2010 at 6:32 am #11526JesseGMember[quote author=”sneradio”]AAC+ @ 24kbps 32kHz stereo sounds fairly decent as my station will demonstrate. Check it out at http://loudcity.com/stations/soft-n-eas … isten.html[/quote]
HE or PS profile? That’s an important factor at those bitrates.
October 26, 2010 at 12:23 pm #11527GuillouMemberSame question as JesseG : HE or PS ?
An other question. Have you tested the modified version of edcast ?
http://users.tpg.com.au/radiorio/
This version would improve PS… I haven’t tested it yet.
Edcast doesn’t seems to be developped by his autor…October 26, 2010 at 7:52 pm #11528JesseGMemberI’ll poke Ed about setting EdCast up on sf.net or something. I don’t know how many people would be interested (or capable) of making it better, but it’s worth a shot I guess. Ed’s pretty crazy busy working for Ando over the last 5+ years.
For 99% of use though, the presets that CT put into its codec (use the newest version possible) that the regular EdCast uses is as good a quality as you can get anyways. Only in specialized situations does that other version offer any advantage. In my opinion.
October 27, 2010 at 1:42 pm #11529sgeirkMemberHere’s a 44.1khz 48kbps AAC+ stream using Live, unfortunately, due to the wide varying levels, there’s a compellor in front of it doing level work only.
October 27, 2010 at 2:06 pm #11530sneradioMember[quote author=”JesseG”]HE or PS profile? That’s an important factor at those bitrates.[/quote]
According to my Edcast config it is "AAC+V2 parametric stereo". I believe AAC+V2 implies both HE and PS profiles. Is that right?October 27, 2010 at 4:24 pm #11531timmywaParticipant[quote author=”Guillou”]Same question as JesseG : HE or PS ?
An other question. Have you tested the modified version of edcast ?
http://users.tpg.com.au/radiorio/
This version would improve PS… I haven’t tested it yet.
Edcast doesn’t seems to be developped by his autor…[/quote]What is "custom" about this version of EdCast??
October 27, 2010 at 4:33 pm #11532GuillouMemberJust simply click on the link that you have quoted…
All is explained.November 5, 2010 at 10:11 am #11533kniggetMemberWhere are people getting their codecs from?
I think a sticky for ‘get your codecs here’ would be a great idea also
November 5, 2010 at 5:05 pm #11534timmywaParticipant[quote author=”knigget”]Where are people getting their codecs from?
I think a sticky for ‘get your codecs here’ would be a great idea also [/quote]
Except for the latest versions of Winamp, you could pull the enc_accplus.dll from the winamp folder. The Lame encoder is posted up on a sticky by Leif and Jesse called something like Best for Streaming MP3 something-something.
By the bye… now that winamp has somehow embedded the aac+ encoder, where’s a good place to find newer ones as they are made available?
November 6, 2010 at 5:34 am #11535JesseGMemberhttp://stashbox.org/1025842/enc_aacplus.zip
From the latest Winamp, v5.581. Not sure if it’s newer than anything past, but… yeah. It’s still in the installer. Not sure where you heard it wasn’t.
November 6, 2010 at 4:39 pm #11536timmywaParticipantThanks, Jesse. I don’t know what I was thinking. I swear I looked around and couldn’t see any actual DLL files. I see them now in the plugins folder.
Guess I was high or something!
Thanks!
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