If you need to make advanced acoustic measurements, examine reverb times and structure, or calculate specific intelligibility criterion (like STI, Clarity, T60, etc), then you need Smaart v8. Those capabilities reside in Smaart v8’s Impulse Response Mode, and are wholly omitted from Smaart Di. A chart comparing Smaart v8 and Smaart Di v2 in .... "/>