Today we injected acoustic noise in the MC building hall (Figure 1, the setup). We used one loudsepaker and injected noise with the onosokki. We managed to increase the standard acoustic spectral noise about 10 times from 50Hz to 2kHz. In Hrec we notice no visible noise increase (Figure 2, it shows injection #3 - pink noise). These data will be used to estract an upper limit coupling function.

Here injection times:

quiet reference 13:45 LT, 600s.

1) white noise: 1189943971 to 1189944155

2) pink noise:  1189944337 to 1189944538

3) pink noise with bit higher volume: 1189944724 to 1189944951