Hello, Spectroscope is indeed a very useful tool, and I am glad to see it added to Digicheck. At present, I hope it can be arranged in a window like in the picture (using only a 4-in-1 window), and support adjusting the frequency scale. I usually judge whether an audio file is "lossless" by observing the attenuation of high frequencies, so 10kHz~20kHz (even higher than 20kHz) is the range I focus on, which is very important and commonly used in mixing work.