On Thu, Apr 21, 2016 at 12:14 AM, Trond Lossius <trond.loss...@bek.no> wrote:
> > On 20 Apr 2016, at 21:16, Marc Lavallee <m...@hacklava.net> wrote: > > > > I wonder why using uncompressed PCM instead of compressed AAC... > > Is there a risk of compressed audio altering the phase between the > channels, affecting the spatial image? > Marc and I looked at this informally when he was developing ambisonic.xyz. We took panned first-order B-format (e.g., AJH-eight-positions.amb), though an encode/decode cycle with candidate codecs, and then looked at the spatial spreading of energy with a simple parametric decoder. No listening tests, just visual comparison of plots of spatial energy. We found very little spreading with low-complexity AAC, but a fair amount with HE-AAC. Aaron Heller (hel...@ai.sri.com) Menlo Park, CA US -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20160421/84c6ed60/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
