J-Stereo and I-Stereo, What's the difference? |
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J-Stereo and I-Stereo, What's the difference? |
  May 16 2003, 23:36
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#1
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Group: Members Posts: 48 Joined: 21-July 02 Member No.: 2691  |
Someone can tell me the difference between Joint Stereo and Intensity Stereo?
Why I-Stereo isn't supported by Lame 3.9x? Will it be supported by Lame 4? |
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May 16 2003, 23:49
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#2
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 Group: Members Posts: 488 Joined: 8-October 02 From: Vrilissia, Athens Member No.: 3503 |
Why do u care about intensity stereo?
From what I know (I might be wrong...) intensity stereo sucks. -------------------- Wanna buy a monkey?
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May 16 2003, 23:56
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#3
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 Rarewares admin Group: Members Posts: 7515 Joined: 30-September 01 From: Brazil Member No.: 81 |
Excellent explanation, yourtallness.
 IIRC, IS is really a mono stream with directional info - to 'emulate" a stereo effect. JS is 2 strems, and some frequencies are shared, if I'm not mistaken. Lame doesn't supports IS because it's targeted at high quality, and IS is only useful at low bitrates. Takehiro plans to implement IS on Lame 4.0, IIRC. This post has been edited by rjamorim: May 16 2003, 23:57 -------------------- Get up-to-date binaries of Lame, AAC, Vorbis and much more at RareWares:
http://www.rarewares.org |
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May 17 2003, 00:01
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#4
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Group: Members Posts: 48 Joined: 21-July 02 Member No.: 2691 |
Well,i'm reading here
http://www.hydrogenaudio.org/forums/index....ST&f=16&t=9238& and Takehiro writed "Intensity stereo is "must" item before public testing, but it is completely new code and it takes long time to finish implementing. ABR/CBR noise shaping code are almost finished. But bit resovoir code need to be tuning for short blocks and lower bitrate. This tuning will start after implementing i-stereo." so i'm a bit curious..and i'm waiting to something that explain me the difference between I-S and J-S 
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May 17 2003, 00:05
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#5
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Group: Members Posts: 48 Joined: 21-July 02 Member No.: 2691 |
QUOTE (rjamorim @ May 16 2003 - 11:56 PM) Excellent explanation, yourtallness. IIRC, IS is really a mono stream with directional info - to 'emulate" a stereo effect. JS is 2 strems, and some frequencies are shared, if I'm not mistaken. Lame doesn't supports IS because it's targeted at high quality, and IS is only useful at low bitrates. Takehiro plans to implement IS on Lame 4.0, IIRC. Tnx for the explanation  "IIRC"...what does it mean? 
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May 17 2003, 00:10
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#6
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Rarewares admin Group: Members Posts: 7515 Joined: 30-September 01 From: Brazil Member No.: 81 |
QUOTE (IGOR) [X,May 16 2003 - 08:05 PM] "IIRC"...what does it mean? If I Remember Correctly -------------------- Get up-to-date binaries of Lame, AAC, Vorbis and much more at RareWares:
http://www.rarewares.org |
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May 17 2003, 00:13
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#7
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Group: Members Posts: 48 Joined: 21-July 02 Member No.: 2691 |
QUOTE (rjamorim @ May 17 2003 - 12:10 AM) QUOTE (IGOR) [X,May 16 2003 - 08:05 PM] "IIRC"...what does it mean? If I Remember Correctly Tnx
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May 17 2003, 00:19
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#8
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 Group: Members Posts: 630 Joined: 18-June 02 Member No.: 2332 |
i thought intensity stereo would switch to mono if a strong signal was in one channel? (assuming i guess that you couldn't hear the other channel anyway) Maybe I'm wrong, there isn't to much talk about IS on these boards.
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May 19 2003, 09:57
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#9
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 LAME developer Group: Developer Posts: 2950 Joined: 1-October 01 From: Nanterre, France Member No.: 138 |
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May 24 2003, 05:02
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#10
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Group: Members Posts: 630 Joined: 18-June 02 Member No.: 2332 |
Thanks for that description of IS, Gabriel. Makes alot of sense now.
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Lo-Fi Version | Time is now: 21st May 2013 - 21:04 |
