Hello. I am using 6 type 4958 B&K microphones, PCB Piezotronics signal conditioner, CB-68LB terminal and PCIe-6353.
My goal is to have the VI show a graph for the voltage from each microphone and indicator of frequency for when I play a sound with a certain fixed frequency. And I also want, the VI to show a graph of dB vs Hz for when I play 3 or 4 sounds with differents Hz at same time, and calculate the sound pressure level to match the one showed by a sound pressure meter.
The VI kind of works but I think the SPL part is not ok. The VI itself is probably not well done. Can I have some help or advice?
My work conditions are not the best at the moment but I am trying to figure out the VI before moving to the anechoic chamber. I also have to replace some wires that are not ok. I have other things going on in the VI (two other channels for a pitot tube and a thermocouple but I still need to get that done) but not important. The part about the sound is the most important.
I will leave here my VI, and four screen shots (1st- measuring a sound of 440 Hz, 2nd- measuring a sound of 1000Hz, 3rd measuring a sound with 5000Hz and 4th with three frequencies 440hz 1000hz and 5000hz). In the last one you can see the microphone with white plot needs to have its wire replaced because it is behaves different from the others. I think I have to remove the offset in the voltage too, I think I know how to do that.
Thank you for you attention!
