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Updated Capture (markdown)

Brumi-2021 2023-08-19 16:05:57 +02:00
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Capture.md

@ -36,7 +36,7 @@ Pls. find attached some examples , capturing the same tuned AM broadcasting , us
![image](https://github.com/eried/portapack-mayhem/assets/86470699/3c9c851f-a311-4411-a2a3-09920ce34797) ![image](https://github.com/eried/portapack-mayhem/assets/86470699/3c9c851f-a311-4411-a2a3-09920ce34797)
![image](https://github.com/eried/portapack-mayhem/assets/86470699/d4aa10f5-1155-4924-a35b-c44dd12dc8bc) ![image](https://github.com/eried/portapack-mayhem/assets/86470699/d4aa10f5-1155-4924-a35b-c44dd12dc8bc)
Depending on the tuned frequency, (mainly most visible in 25khz, but also less visible in others BW <100k ) we may got a random strange left picture effect -on the screen - with “vertical stripes” , this can be easily corrected, just readjusting the center frequency some Hz up or down , till trying to have full convergence of all red carriers to the central unique one , with +-10Hz steps. (It is pending to check and investigate different decimation filters or channel filters , to solve it and achieve a good performance as we have in the low bit rates 12k5 , 16k ) Depending on the tuned frequency, (mainly most visible in 25khz, but also slightly visible in other BW's <100k ) we may got a random strange left picture effect -on the screen - with “vertical stripes” , this can be easily corrected, just readjusting the center frequency some Hz up or down , till trying to have full convergence of all red carriers to the central unique one , with +-10Hz steps. (It is pending to check and investigate different decimation filters or channel filters , to solve it and achieve a good performance as we have in the low bit rates 12k5 , 16k )
![image](https://github.com/eried/portapack-mayhem/assets/86470699/89786a12-850c-465b-9fb3-5321d47503dd) ![image](https://github.com/eried/portapack-mayhem/assets/86470699/89786a12-850c-465b-9fb3-5321d47503dd)