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Re: [microsound] Portable audio codecs w surround?



Ah thanks for the clarification on the formats! I feel greatly
enlightened.

And I had no idea about AAC's capabilities, that's very cool.

On Jun 22, 2005, at 7:10 AM, Michael North wrote:


The following is from the MS site ....but I've used it, and it works....

Windows Media Audio 9 Professional, is a great match for high-fidelity
hardware and computer with 5.1 channel surround sound. It captures
full-resolution audio (24-bit/96-kHz sampling) in stereo or 5.1
channel (and
even 7.1 channel) surround sound for streaming or download-and-play
delivery
at 128 to 768 Kbps

Had it wrong on the apple ac3(shouldn't answer emails without enough
sleeptime)...meant AAC | MPEG-4...from their site, the following/
also have
used it and it worked....

When compared side-by-side, AAC proves itself worthy of replacing
MP3 as the
new Internet audio standard. Take a look at these AAC advantages
over MP3:

    * Improved compression provides higher-quality results with
smaller file
sizes
    * Support for multichannel audio, providing up to 48 full
frequency
channels
    * Higher resolution audio, yielding sampling rates up to 96 kHz
    * Improved decoding efficiency, requiring less processing power
for
decode

Real Audio also uses AAC and is as well capable of multi-channel
sound, have
used it and it worked.........................




//*-----Original Message----- //*From: Mr.D [mailto:craque@xxxxxxxxxx] //*Sent: Tuesday, June 21, 2005 12:31 PM //*To: microsound //*Subject: Re: [microsound] Portable audio codecs w surround? //* //*AC3 is Dolby Digital, not Apple. So naturally, it does surround. //* //*Apple's lossless implementation is m4a, MPEG layer 4, the audio //*portion of an MPEG 4 movie. To my knowledge, it's dual channel only. //*That goes for WMA and RealAudio too, AFAIK. //* //*You may want to look into flac, which has multi-channel support; I //*believe there is some work being done on the surround sound //*capabilities of flac. http://flac.sourceforge.net/ //* //*matt //* //*On Jun 21, 2005, at 10:53 AM, Michael North wrote: //* //*> Franhoeffer(?) have released a surround mp3 encoder....is beta and //*> only does //*> 192k....but you can do surround in apples ac3, ms wma and real ra as //*> well..................... //*> //*> //*-----Original Message----- //*> //*From: Kassen [mailto:kassen@xxxxxxxxxxxxxx] //*> //*Sent: Tuesday, June 21, 2005 8:54 AM //*> //*To: microsound //*> //*Subject: Re: [microsound] Portable audio codecs w surround? //*> //* //*> //*Adam Young //*> //* //*> //*> I'm new to the surround sound game.. I was wondering if there //*> are any //*> //*> MP3-like audio codecs that support surround sound in a //*> portable format //*> //*like //*> //*> MP3s that can be downloaded and played with a player, etc. //*> //* //*> //*Somebody correct me if I´m wrong, but I believe codecs like mp3 //*> tend to //*> //*lose //*> //*the phase relations of the material. I think the more simple //*> strategies //*> //*for //*> //*surround depend on those which would mean encoding will spoil //*> the fun. //*> //* //*> //*Depending on your aplication you could work with multiple //*> paralel files? //*> //* //*> //*Kas. //*> //* //*> //* //*> //* //*> // //*> *--------------------------------------------------------------------- //*> //*To unsubscribe, e-mail: microsound-unsubscribe@xxxxxxxxxxxxx //*> //*For additional commands, e-mail: microsound-help@xxxxxxxxxxxxx //*> //*website: http://www.microsound.org //*> //*> //*> --------------------------------------------------------------------- //*> To unsubscribe, e-mail: microsound-unsubscribe@xxxxxxxxxxxxx //*> For additional commands, e-mail: microsound-help@xxxxxxxxxxxxx //*> website: http://www.microsound.org //*> //*> //* //* // *--------------------------------------------------------------------- //*To unsubscribe, e-mail: microsound-unsubscribe@xxxxxxxxxxxxx //*For additional commands, e-mail: microsound-help@xxxxxxxxxxxxx //*website: http://www.microsound.org


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