[CELT-dev] drawback when using very small frame sizes ?

Jean-Marc Valin
2011-01-19T02:24:39Z

Hi,

The smaller the frame size, the higher the bit-rate required to get the
same quality. For tiny frame sizes, this is even more noticeable. As for
the compile flags, I think 0.9.1 still required the MIXED_PRECISION to
be defined for fixed-point. This is no longer the case for 0.10 and later.

Cheers,

	Jean-Marc

On 11-01-17 02:48 PM, Marko wrote:
>
> I have learned from the docs that minimum frame size is 64 samples/ch. =
1.33 ms @ 48kHz.
> Is there any drawback using this or maybe 128 in terms of quality or
increased load (compared to 512 samples) ?
>
> thanks a lot,
> Marko.
>
>
> our config:
>   - version = 0.9.1
>   - ARM9E, FIXED_POINT, DOUBLE_PRECISION
> - f = 48kHz
>   - rate = 128 kbit/s (stereo)
>   - vbr_rate = 0
>   - prediction = 2
>   - complexity = 10
>
>
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