Antonio Di Motta
Member
The RTA function is really very important and also very well done and also very fast even on the Raspberry. The ability to calibrate the level is very important, this function allows you to have a real and very precise measuring instrument. They perform several tests in the laboratory, I noticed that RTA also uses the level calibration carried out in the preference / soundcard, this is certainly functional when using the sound card to generate the signal used to make the measurements, but if we want to measure a generated signal externally we must exclude the calibration made with the loop since it corrects both the non-linearities of the DAC section and those of the ADC section and we should only implement the calibration for the ADC audio section using an external generator. This type of calibration would avoid level measurement errors when we use RTA to measure externally generated signals.
Thanks for the attention
Regards
Antonio
Thanks for the attention
Regards
Antonio