Yes, you certainly will, because you just conducted an invalid experiment that is corrupted by the Sighted Listening Effect. Read up on it. Using the method you described, audiophiles the world over have "quickly noticed the difference" between cables (with the same frequency response), power cords, ethernet cables, CDs with green Texta on the lip, and dots glued on walls. In fact, they have "quickly noticed the difference" when they
thought they had changed something, only to find out to their personal embarrassment that they actually hadn't changed the switch,
.
Another issue with your test is the filter used to remove ultrasonic frequencies, great care would be needed to ensure the filter has no audible effect in the audible range. Without such care, one might actually be detecting the difference in the audible range.
I will re-post for you some of
my older content on the work of Oohashi-san.
"Oohashi is widely misinterpreted.
"He is on record stating that nobody can hear above 20 kHz. So his finding was not that we can hear music above 20 kHz, not that music with ultrasonic content sounds any different to music with such content missing when recorded and played back, not that such recorded music (and hence high res recordings) sounds more natural or is in any way sonically preferred. He should not be vilified (nor referenced!!) as if he had found any such thing.
"What he did find was an increase in Alpha-2 brainwave activity when non-stationary signals above 32 kHz are present. Increased Alpha-2 activity is normally associated with increased sensations of pleasantness (or pleasant restfulness), and so it proved in his experiments. That's why he called it an effect, not sound or music.
"This should be of interest to audiophiles: it doesn't change how anything sounds, but it might lead to a general sense of more pleasure, at least sporadically, when certain types of musical recordings are being played on capable gear. Some audiophiles seek pleasure above all else, so they should be interested, at least, even if it isn't caused by what they are hearing, but does occur at the same time as they hear (some) music.
"OTOH there are significant caveats.
- I'm especially concerned that Oohashi exclusively used DSD recordings for his experiments on Hypersonic Effect. The noise shaping inherent to DSD means the 40 kHz band is swamped in noise, in fact it probably swamps any recorded performance frequencies in this band. Yet Fukushima/Oohashi et al found the hypersonic effect to be positive only when the performance frequencies were above 32 kHz. Hmm: the effect might be a side effect of using DSD and playing back the DSD shifted noise hump through ultrasonic tweeters. I'm not aware of anyone testing to eliminate this strong coincidence.
- Also very concerning is that the effect is negative when the performance frequencies are in the band 20-32 kHz, ie less Alpha-2 activity (and presumably less pleasantness) than when limiting frequencies to <20 kHz. This makes it impossible to conclude on the available evidence that recording and playing back music with >20 kHz bandwidth is a good thing at all.
- As others eg @Galliardist have mentioned, one or two attempts to replicate the hypersonic effect experiment have failed to find the effect. I'm thinking NHK (Japan's national broadcaster) and Laurie Fincham*, but note that these tests were looking for audible differences, which was never Oohashi's claim. However, I think they are the experiments people refer to as non-verification of the hypersonic effect.
"My conclusion is that, unless something much more impressive (and positive) comes to light, there is nothing to see here for audiophiles chasing sound quality.
"OTOH if you really do want to reliably increase your Alpha-2 activity and experience increased pleasantness with much greater reliability, drink a cup or two of tea while listening to your recordings.
* Laurie Fincham, ‘
The Golden Ear Room, Listening tests on high frequency bandwidth and clipping conducted at the AES 1980 Convention, London’ (unpublished)"
Also note that the gear used in the above experiments had a frequency response flat to 100 kHz, for both recording and playback, and the music was gamelan, specifically chosen for loads of ultrasonic energy, unlike most other music. Without that combination of setup and music...no Hypersonic Effect.
Finally, that YouTube you shared showed most of the ultrasonic energy was in the 20kHz-32kHz range, a region where Oohashi claimed the Hypersonic Effect (a mood effect, not a sensation) was
negative. So the listener's mood is supposed to improve if that vinyl energy is filtered out. Hello CD.
cheers