[vorbis-dev] Spectral band replication

[Jan.Tangring at et.se]

>Hello!
>I have the following idea about this "spectral band replication":
>
>Harmonic frequencies are integer multiples of the fundamental frequency. That
>means if you take all frequencies in a particular block (say up to 11 KHz for
>a medium bitrate encoding), double them and add them to the original at a
>lower volume, then this results in frequencies up to 22 KHz.

Maybe someone should take the time to lookup patents from mr Liljeryd?


-- 
-- Jan Tångring, reporter Datateknik 3.0 (www.datateknik30.se)

--- >8 ----
List archives:  http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to 'vorbis-dev-request at xiph.org'
containing only the word 'unsubscribe' in the body.  No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.