[opus] Encoding ultrasonics

[Gregory Maxwell]

On Wed, Jan 16, 2013 at 2:45 PM, Corey Shay <cshay892 at gmail.com> wrote:
> Why use Opus for this? Video games, of course. Memory
> constraints.

If you use Opus or any other lossy encoder for this you will violate
their perceptual assumptions and get results that sound like crud. A
lossy codec (or encoder) could— in theory— be design to work more
sanely in this use case, but not for the Opus format (because much of
the encoder's behavior is baked into the format for efficiency
reasons) and not without substantially compromising the effectiveness
of the lossy compression.