There has been quite extensive acoustic modelling from within Goodison park, which means that a LiDAR scan is captured and sounds are recorded. Now, for much of it it will be audio pulses that are measured within an empty stadium, in order to use within the digital model that's created from the scans and effectively measure/record/reproduce acoustic performance....
Anyway, that's all well and good for use within the model, but a bit rubbish when you try to listen back to it within an acoustic anechoic chamber, so they use a recording captured with full range 3d microphones to model as per what the pulses describe. The recording that was captured was taken when Everton faced Bournemouth and went from 0-1 to 2-1 thanks to Niasse. So the Niasse second goal is what designers were hearing when being played back the model of how it will sound within BMD. Niasse has played a bigger part in our new stadium than you'd think. Forever with us.