opus - Jul 2013 - Opus on Analgo Devices ADSP-21489

Hi,

I am evaluating the opus codec for use in an embedded design.
I have successfully ported opus on a TI C5502 (fixed poin dspt) but need to
use
a more powerful dsp processor for our application.
With the C5502 it takes 4.5ms to encode 2 (mono) channels with a 5ms frame
@80kbits per channel. I need to reduce the computing time to reduce latency
and leave some time for the DSP to perform some other tasks.The ADSP-21489
with
it's floating point architecture seems like a good fit. It also runs faster
@ 450Mhz
instead of 300Mhz for the C5502.
My question is : can I expect faster computing when opus is compiled in
float mode
rather than in fixed mode ?

Thanks for your input.

Robert
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Robert Radrua wrote:
> My question is : can I expect faster computing when opus is compiled in
> float mode
> rather than in fixed mode ?
This depends a lot on the FPU available. With a good FPU, it should be 
true. For example, on OMAP 4460 (Cortex A9), float is _slightly_ faster 
than fixed. On OMAP 3430 (Cortex A8), float is _much_ slower, even 
though both have a hardware FPU.