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Updated Capture (markdown)

Brumi-2021 2023-09-02 09:57:08 +02:00
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Capture.md

@ -15,8 +15,7 @@ Note (*) : Currently , **for correct reliable Replay application ,you should ON
Recently, thanks to x4 Oversampling and /4 Decimation introduction , we have also added 1.25Mhz BW REC , but it is in the limit of our hardware System and it starts to have some M4 sample drops. (It is still experimental).
Above 1.25Mhz bandwith options (with YELLOW REC button background Icon), in current fw version , the recorded files have periodical sample drops , and therefore it has not recorded all full original samples content and therefore it is NOT useful for the Replay App , just useful to check the spectrum image, example using the linux tool "inspectrum" or "Audacity") . Anyway when replaying those captured files , the replay time will be shorter than real . but normally you should still get a correct modulation, but in case of voice contents, it would sound , unnatural , "like with accelerated playing speed" , because in fact,due to Hackrf One System (HW+SW) limitations, those recorded files (under those high speed BW with YELLOW icon) have decimated its content - when recorded there were skipped some real time samples.
In future versions, it is pending to investigate and try to apply a correct .C16 recording files (without any samples drop) till a capture of 2Mhz. (We will keep updated that manual , when we achieve it)
Above 1.25Mhz till 5.5Mhz bandwith options (with YELLOW REC button background Icon), in current fw version , the recorded files have periodical sample drops , and therefore it can not record all full original samples content and therefore it is NOT useful for the Replay App , just useful to check the spectrum image, example using the linux tool "inspectrum" or "Audacity") . Anyway when replaying those captured files , the replay time will be shorter than real . but normally you should still get a correct modulation, but in case of voice contents, it would sound , unnatural , "like with accelerated playing speed" , because in fact,due to Hackrf One System (HW+SW) limitations, those recorded files (under those high speed BW with YELLOW icon) have decimated its content - when recorded there were skipped some real time samples.
![image](https://user-images.githubusercontent.com/86470699/162581344-446a1a0b-325e-4bb6-a451-f47ecc91d8e3.png)