Rockbox Development > Feature Ideas
Surround sound or better support for it(proposal)
X86:
Hi
The sound with the wma codec is great,it even has like surround sound,is it there a way to make better surround? or in the effect that I'm wrong,make surround sound support?.The wma codec plays the music great,its like a sitting in the beach watching the sunset,its maginificent,great job.
If it could be made,it would be great to apply that to the other codecs.
Thanks for reading the topic.
Regards.
Gilberto Ramirez Hernandez
Llorean:
The players have stereo output. That's two channels. Surround sound requires more output channels, which requires different hardware.
The only players that could do surround sound are those with digital output (h100 series, some Archoses), and in that case it's more or less just taking a surround file and passing the bitstream on to the receiver and letting it deal with the decoding.
glubash:
You might be able to find a Dolby Pro Logic decoder (most receivers should have it built in) and run the output through that to get 4 channels (L, R, Center, and Rear). But, I'm not sure if wma or mp3 will preserve the Dolby phase shift to get the other channels or if it would be lost in the translation. If you used a lossless codec???
For sure, you would have to have an external decoder though since you only have 2-channel output.
Ref. page: http://en.wikipedia.org/wiki/Dolby_Pro_Logic
Glubash
saratoga:
--- Quote from: X86 on July 27, 2008, 02:19:40 AM ---The sound with the wma codec is great,it even has like surround sound,is it there a way to make better surround?
--- End quote ---
The WMA codec doesn't do surround because WMA standard is 1 or 2 channel only.
TexasRockbox:
If one had an old (70's) quad SQ encoder/decoder one could have multichannel from that from two channels. Some CDs were actually released of using some of the old SQ mixes. To bad one couldn't record/playback 30khz (the CD-4 carrier frequency), then CD-4 could be used and it would be discrete four channel.
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