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Is 192khz Sample rate cool to run on tbe DAX ( for Pedigree Perfectionist Operator's) ?

James Nelson
James Nelson Member ✭✭
edited March 2017 in SmartSDR for Windows
Going beyond the 48khz is it permissible to run 192khz in DAX ? I have selected it and seems to work like the old VAC ?

Answers

  • Tim - W4TME
    Tim - W4TME Administrator, FlexRadio Employee admin
    edited March 2017
    You can use the 192k sampling rate but it does not provide you any real benefit. The audio coming from the radio is 24k so you are up-sampling to 192k. Then your digital mode program will need for the signal to be down-sampled to a sampling rate it can use, such as 48k for Fldigi (after configuring it). It is best to minimize the number had magnitude of the up/down sampling operations for greatest fidelity. So in my case, the 24k audio is up-sampled to 48k and Fldigi is running at 48k so there is only one external up-sampling operation. BTW, inside of Fldigi, the signal is down-sampled to 8k before being sent to most of the internal modems (modulators/de-modulators).

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