HydrogenAudio

Lossy Audio Compression => Ogg Vorbis => Ogg Vorbis - General => Topic started by: Oggie-Ben-Doggie on 2010-08-03 00:42:36

Title: AIFF encoding
Post by: Oggie-Ben-Doggie on 2010-08-03 00:42:36
Hi,

I'm interested in joining a subscription music site (www.bso.org) that offers digital music in HD AIFF, HD WMA and HD WMA surround sound formats.  Since I use Linux, I'm really not interested in the WMA format.  So my question is, do you know if oggenc can convert HD AIFF files (encoded at 88.2kHz, 24bit) directly into OGG files?

Thanks!
Title: AIFF encoding
Post by: forart.eu on 2010-08-03 08:49:59
Wikipedia is your friend ! http://en.wikipedia.org/wiki/Vorbis (http://en.wikipedia.org/wiki/Vorbis)

Quote
Vorbis is intended for sample rates from 8 kHz telephony to 192 kHz digital masters


From Vorbis.org website:
Quote
Ogg Vorbis is a fully open, non-proprietary, patent-and-royalty-free, general-purpose compressed audio format for mid to high quality (8kHz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to 128 kbps/channel.


I personally encoded 96Khz/24bit successfully with latest Vorbis versions, so I believe you just need a converter.
Title: AIFF encoding
Post by: [JAZ] on 2010-08-03 18:55:23
vorbis as a format supports high sampling rate inputs, but what format can you use depends exclusively of the program you use to create the file.

The only info I could get from the site about the formats was "AIFF = MAC" "WMA = PC". Also, they say "AIFF ~10x larger than MP3 at 320".
That makes it ~3200kbps.  88Khz 24bits stereo is ~4200kbps.  So it could be Apple Lossless or something alike, but not PCM.

I suggest you to contact the site and ask them to tell you exactly with codec they use, in order to know if you really have an option on linux for any of the high definition formats they offer.