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bitrate & upload speed question


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my station runs a muitple bitrate streams eg 32k, 64k, 128k,

when the station is streaming from the studio all 3 streams run fine with no buffering. but when 1 of my djs connected to do his show i found that the

128k stream was always skipping and buffering but the 32k & 64k would stream fine.

 

is this because that my dj does not have enuff band bandwidth at his end or not enuff upload speed?

 

does anyone know how much upload speed you would need to run the 32k, 64k, 128k ?

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The easiest way to stop buffering is to stop streaming in Mp3 format. AAC or AAC+ are much more reliable, better quality, and lower bitrate. A 24kbps AAC+ stream will sound just as good as FM, without the bandwith problem.

 

whats acc or aac+?

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Advanced Audio Coding (AAC) is a standardized, lossy compression and encoding scheme for digital audio. Designed to be the successor of the MP3 format, AAC generally achieves better sound quality than MP3 at many bit rates.

AAC has been standardized by ISO and IEC, as part of the MPEG-2 & MPEG-4 specifications. The MPEG-2 standard contains several audio coding methods, including the MP3 coding scheme. AAC is able to include 48 full-bandwidth (up to 96 kHz) audio channels in one stream plus 15 low frequency enhancement (LFE, limited to 120 Hz) channels and up to 15 data streams. AAC is able to achieve indistinguishable audio quality at data rates of 320 kbit/s (64kbit/s/channel) for five channels. The quality is close to CD also at 96 kbit/s (48kbit/s/channel) for stereo.

AAC's best known use is as the default audio format of Apple's iPhone, iPod, iTunes, and the format used for all iTunes Store audio (with extensions for proprietary digital rights management).

 

http://en.wikipedia.org/wiki/Advanced_Audio_Coding

 

Have a read up on that. Better than me explaining :)

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  • 2 weeks later...
my station runs a muitple bitrate streams eg 32k, 64k, 128k,

when the station is streaming from the studio all 3 streams run fine with no buffering. but when 1 of my djs connected to do his show i found that the

128k stream was always skipping and buffering but the 32k & 64k would stream fine.

 

is this because that my dj does not have enuff band bandwidth at his end or not enuff upload speed?

 

does anyone know how much upload speed you would need to run the 32k, 64k, 128k ?

 

If the station is running the streams then it may be best to keep the station running the streams all the time and have the djs just connect to a single source server, and let the station do the rest.

 

with the three streams @ 224k + overheads then i doubt a 256k upstream would be enough as all isp's contend their bandwidth and do not guarantee constant connection.

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If the station is running the streams then it may be best to keep the station running the streams all the time and have the djs just connect to a single source server, and let the station do the rest.

how can i do this please

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