[Discuss-gnuradio] Latency on TX for low data rate systems

[Eugene Grayver]

Hello,

I have a very low data rate FSK system
(<100 bps).  The problem is the enormous latency introduced by
the inter-block buffers.  (I am running in ms windows).  The
buffer granularity is apparently 64kB.  I upsample/interpolate the
data to around 500 kHz before sending it to hardware.  The buffers
get filled up on startup from the data source, and any new data takes forever
to come out. (64k/100 = 600sec!)  Is there a way to make the inter-block
buffers MUCH smaller?  Or, at least make them different size depending
on the actual sample rate?  What other options can anyone propose?

Thanks.
________________________
Eugene Grayver, Ph.D.
Aerospace Corp., Sr. Eng. Spec.
Tel: 310.336.1274
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