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...A lot of stuff out there has bass below 35Hz.
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Yeah, if you count note start events and are happy with relatively weak, natural levels. In analyzing a hundred songs I thought were full of LF content I found that most had byproduct activity down there but only a few had seemingly intentional musical events. Most had prominent 50-60 Hz stuff and some had 40Hz. Very few
prominent below 35Hz.
By byproduct LF I mean things like the impulse energy at the start of a sound.
There was one woman I miked up at a large corporate conference who had tons of LF activity in her voice; every time she started a phrase, the sound (as seen on SmaartLive spectrograph screen) would rise quickly buy noticably up from single to multiple glottal pops then swing into her natural low alto voice. Fundamentals around 100Hz. She was barrel-shaped with reinforced foundation undergarments helping to hold the lavalier mic directly out in front of her chin. Heroic proportions. She also had the kind of growly voice tempered by years of cigarettes and whiskey. At any rate, to this date, she's the person with the lowest reading I've ever seen pass through my SmaartLive spectrograph and it's because the start of each phrase developed much more slowly out of glottal pops.
I wouldn't use her voice for fun extra-low subwoofer tests, though. It's much more rewarding to me to discover a synth bass line walking through such low notes.
-Bink