Maybe Decula? I keep looking for one.
Found this guy today!
Singing males. 76.5 dB/max 81.2 dB
Singing males. 81.0 dB/max 84.7 dB
White oak and black cherry
Singing males. 80.4 dB/max 84.0 dB
On fraxinus sp.
Males singing average 76.0 / max 78.1 decibels