Yep. A 60 second blast would normally do it. Note that this wasn't your basic Bark-off from TV. It does better than 130dbspl.
1. Frequency modulation. 24.5khz carrier modulated by a 1khz tone. The generator was something I designed for a broadcast application. I had a few of them lying around, so I just retuned it for the dog's ears.
2. The spectrum plot was from the generator.
3. High resolution FFT. 16 bit word length, 192kHz sampling rate, and 16,000 frequency bins. The sidebands are what you see with tone modulated FM, and that's what the dog heard. Of course, at that spl, he also heard intermodulation products because of mechanical overload in his ears. He also most likely heard a 1khz component because of the frequency response slope in his hearing, and the fact the his little ears were being driven into nonlinearity. I didn't set out to punish the dog, but he was for damn sure gonna shut up.