Difference between revisions of "Preparing releases from internet-based broadcasts"

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* For [http://themixingbowl.org/ TheMixingBowl] of interest are ''only'' the stations offering DJ sets that you can't buy anywhere as that it is what TheMixingBowl is all about. [[:Category:Radio Stations|'''Radio stations meeting this requirement are listed here''']].  
 
* For [http://themixingbowl.org/ TheMixingBowl] of interest are ''only'' the stations offering DJ sets that you can't buy anywhere as that it is what TheMixingBowl is all about. [[:Category:Radio Stations|'''Radio stations meeting this requirement are listed here''']].  
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* Only few Internet radio stations broadcasting DJ sets are suitable for TheMixingBowl.org as they do not meet the minimum quality requirements to allow their sets being uploaded to TheMixingBowl. Most of these radio stations are broadcasting nuked sets of low quality (sets that would be available elsewhere in much higher quality). The above mentioned list of [[:Category:Radio Stations|Radio Stations]] can be considered to represent a Whitelist of suitable radio stations.
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* Only few Internet radio stations broadcasting DJ sets are suitable for TheMixingBowl.org as they do meet the minimum quality requirements to allow their sets being uploaded to TheMixingBowl. All other internet radio stations are broadcasting nuked sets of low quality (sets that would be available elsewhere in much higher quality). The above mentioned list of [[:Category:Radio Stations|Radio Stations]] can be considered to represent a Whitelist of suitable radio stations.
  
 
==Acceptable Bitrates==
 
==Acceptable Bitrates==
  
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Minimum acceptable bitrates for internet broadcasts need to be taken into account. If you have a choice between different broadcasting formats, choose the one with the highest quality. One has to know, that all digital formats used to broadcast music are lossy and do not contain all the original audio information. Lossless digital broadcasts do not exist up to now. The quality of a digital broadcast is determined by two values, the bitrate and the frequency. ''Transparency'' means that the human ear cannot distinguish the broadcasted signal from the original high quality music set, '''low bitrates as defined below are a strict No-No for uploads to TMB'''.
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Minimum acceptable bitrates for internet broadcasts need to be taken into account. If you have a choice between different broadcasting formats, choose that one with the highest quality. One has to know that all digital formats used to broadcast music are lossy and do not contain all the original audio information.  
  
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* Frequency (almost independent from the format):
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The minimum requirements are:
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** >40 kHz: transparent (such as the "CD-quality" of 44.1 kHz).
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* [[MP3]]: 112kbit/s,
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** 32-40 kHz: near-transparent.
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* [[MP2]]: 128kbit/s,
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** <32 kHz: one can hear the lower frequencies only, the high frequencies are cut off. ''Try to avoid broadcasts with this frequency''.
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* [[AAC]]: 128kbit/s (the older AAC format isn't as good as mp3),
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* [[AAC|AAC+]]: 64-80kbit/s (the newer AAC format is really good at lower bitrates),
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* [[OGG]]: 64-80kbit/s (the mainline OGG format),
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* [[OGG|OGG aoTuV]]: 48-64kbit/s (a heavily optimized audio codec, the best available).
  
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* Bitrate (for the formats [[MP3]], [[WMA]], [[RA]] valid as a rule of thumb):
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Apart from all these minimum considerations, try to avoid streams sounding "crispy" with lots of distortions at higher frequencies. Also, try to avoid [[WMA]] and [[RA]] broadcasts. Usually, [[WMA]] and [[RA]] broadcasts at bitrates >64kbit/s do not exist. That make sets recorded from these sources unsuitable for TMB uploads. '''Do never upload internet broadcasts with ''low bitrates'' to [http://themixingbowl.org/ TheMixingBowl]'''
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** >192kbit/s: transparent.
 
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** 160-192kbit/s: near-transparent.
 
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** 112-160kbit/s: medium bitrates, one can easily hear differences to the original.
 
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** <112kbit/s: low bitrates, usually with lots of "crispy" distortions at higher frequencies.
 
−
 
 
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Almost always, [[WMA]] and [[RA]] broadcasts at bitrates >64kbit/s do not exist. That almost excludes the use of these formats for uploading to TMB. Do not use these sources!
 
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*Bitrate (for the more advanced formats [[AAC|AAC+]] and [[Ogg Vorbis|OGG]]):
 
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** >160kbit/s: transparent.
 
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** 96-160kbit/s: near-transparent.
 
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** 64-96kbit/s: medium bitrates, higher frequencies are removed, sounds "smooth".
 
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** <64kbit/s: low bitrates, suitable for speech or mono transmissions only.
 
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'''Do never upload internet broadcasts with ''low bitrates'' to [http://themixingbowl.org/ TheMixingBowl]'''
 
  
  

Revision as of 18:44, 31 May 2006

Internet Radios: Common rules, frequent mistakes and all about superior quality.

Basic Internet Radio Selection Considerations

  • For TheMixingBowl of interest are only the stations offering DJ sets that you can't buy anywhere as that it is what TheMixingBowl is all about. Radio stations meeting this requirement are listed here.
  • Only few Internet radio stations broadcasting DJ sets are suitable for TheMixingBowl.org as they do meet the minimum quality requirements to allow their sets being uploaded to TheMixingBowl. All other internet radio stations are broadcasting nuked sets of low quality (sets that would be available elsewhere in much higher quality). The above mentioned list of Radio Stations can be considered to represent a Whitelist of suitable radio stations.

Acceptable Bitrates

Minimum acceptable bitrates for internet broadcasts need to be taken into account. If you have a choice between different broadcasting formats, choose that one with the highest quality. One has to know that all digital formats used to broadcast music are lossy and do not contain all the original audio information.

The minimum requirements are:

  • MP3: 112kbit/s,
  • MP2: 128kbit/s,
  • AAC: 128kbit/s (the older AAC format isn't as good as mp3),
  • AAC+: 64-80kbit/s (the newer AAC format is really good at lower bitrates),
  • OGG: 64-80kbit/s (the mainline OGG format),
  • OGG aoTuV: 48-64kbit/s (a heavily optimized audio codec, the best available).

Apart from all these minimum considerations, try to avoid streams sounding "crispy" with lots of distortions at higher frequencies. Also, try to avoid WMA and RA broadcasts. Usually, WMA and RA broadcasts at bitrates >64kbit/s do not exist. That make sets recorded from these sources unsuitable for TMB uploads. Do never upload internet broadcasts with low bitrates to TheMixingBowl


Ripping Internet Streams

- Suitable programs

- Guide to use the programs


Editing Ripped Internet Streams

- Suitable programs

- Rules for editing digital music files


Preparation Finish

- Preparing uploads...

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