Re: [Bluez-devel] SBC optimizations

["Cidorvan Leite" <cidorvan@gmail.com>]

Hi Brad!

I would say:
"I am not sure if last version(64bits) of decode with 4 subbands is
correct about overflows."

On Fri, Feb 22, 2008 at 11:00 AM, Cidorvan Leite <cidorvan@gmail.com> wrote:
> Hi Brad!
>
>  The volume drop is not significant.
>  Comparing the versions, I didn't see any change in quality with my
>  headphone, so I think that we can change to 32bits.
>  By the way, I am not sure if last version of decode with 4 subbands is
>  correct about overflows.
>
>
>
>  On Thu, Feb 21, 2008 at 10:58 PM, Brad Midgley <bmidgley@gmail.com> wrote:
>  > Cidorvan
>  >
>  >  How significant is the volume drop in 4 subbands? Should we just leave
>  >  the decoder at 64 bit mults so we don't needlessly suffer quality
>  >  issues on faster platforms?
>  >
>  >  Brad
>  >
>  >
>  >
>  >  On Thu, Feb 21, 2008 at 3:29 PM, Cidorvan Leite <cidorvan@gmail.com> wrote:
>  >  > Hi!
>  >  >
>  >  >  I replaced the 64bits multiplies by 32bits and fixed the volume, now
>  >  >  the encode and decode are >10% faster.
>  >  >  Unfortunately, I couldn't keep the same volume for decode with 4 subbands...
>  >  >
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>  >  Brad
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