Hello, I would like your help in developing a psychometric test function for a two alternative choice auditory discrimination task. I have a nine frequencies I would like to test my subjects on but my challenge is developing the appropriate function. Specifically, how do I pre-allocate these frequencies and load them onto the HiFi module then efficiently call the specific frequency ( as an output action in the deliver stimulus state i.e. [ 'P' 'f'] across the test duration?