On 11/14/2017 02:20 PM, Marcus D. Leech wrote:
My real question is whether it's safe to assume that a flowgraph is
entirely clocked by the samples from its hardware source, and
consequently that processing within the flowgraph (e.g., oscillator
and mixer for tuning) does not introduce potential frequency errors.
A flow is clocked by the hardware--either by samples being produced or
consumed by the hardware.
The exception is when you use a "throttle" block in the absence of any
hardware. In that case, the PC clock (very roughly) controls sample rate.
So, in the absence of overruns or underruns, the signal processing in a
flow-graph cannot introduce timing errors, unless deliberate a programmmed.
Thanks, Marcus. That's what I thought, but it's good to have it verified.
John
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