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HiMaybe, this seems a little strange a question, but:
is the fact, that my birds (parottlets) get all nervous and hop around like crazy when I do play SACDs point to some ultrasonic high-levelled signals coming across my loudspeakers?
It does not happen with CDs, only when I play SACDs. Are there any sort of non-musical ultrasonic signals (Interferences, artifacts or whatever), that might cause this?
Follow Ups:
NT
When I played my first SACD, my dog headed for his doggy door on a run and left the house. I have never had any response from any dog to playing music, no matter how loud. Now, any SACD sends him running from the house. Vinyl is just fine, though RB CDs make him a liitle nervous. Maybe it's the sight of that silver disk. But even if he's in the next room and I put on an SACD, he takes off. Anyone else have this?
to see if could be due to ultrasonic noise or ultrasonic harmonics.
I have an African Gray who loves any music that has a quick tempo. I see not difference in behavior from any particular source. While playing the Telarc Celtic SACD the bird was singing, flapping wings and bouncing up and down, he loved it!
Get the Norah Jones SACD and play the DSD layer.....
nt
I'm watching my sister's cockatiel while she is on vacation. One thing is for certain - she displays no such untoward behavior when I play my SACDs.One thing I have noticed is that whether I play CDs or SACDs or a DAD, she displays the same behavior - which mostly consists of preening herself and crapping all over the place!
You would be surprised to learn that a bird's HF range of hearing is quite low - well below that of humans - check the link its quite interesting!
Indeed, the ultrasonic "noise pile" beyond ~50KHz is a flaw inherent to the DSD format. You think your birdies can hear that high?
Do a search for "ultrasonic noise" on this board, there've been countless discussions about that particular issue.Boy, what a fancy way to throw oil on the DVD-A cheerleaders' fires:
"SACDs kill your parrots! LOL";-)
Like I said in my first post: It may seem strange, but this really happens!Maybe, I should tell a bit more about the birds' behaviour:
usually, when I do play music from LP or CD, nothing special happens. With most classical and some pop-music, they start some sort of "tweeting", as if they "join in" on the music. It's the same kind of "tweeting" / "chirping" they do, when they are very relaxed, sitting very close together (like cuddling) and one starts to fall asleep slowly. At home, we do call that "they tell each other good night stories" - it's a really cute behaviour, obviously some kind of "relaxed" communication with - compared to other communication- very soft, but high-pitched chirping. I guess, in the music, some (also for our ears) audible high-frequency content triggers that behaviour (could be, that they hear something in the music, that resembles that special chirping and give an answer). I especially noticed that with classical music with strong string content and some pop-music with a lot of cymbals and hi-hats. So, this behaviour seems to have to do something with high and audible frequencies.The "nervous" behaviour with SACDs I notice is not related to any kind of special music - at least, I can see no pattern. But it seemed obvious to me, that - as soon as I play SACDs - they "wake up" (actually really do wake up, when they are asleep - they would not wake up when playing CDs and LPs at normal listening levels!) and start really nervously hop around in the cage... they seem not to like something.
So, counting two and two together my question (not a conclusion yet!) was, whether there is any difference between a CD/LP and a SACD, that could trigger that different kind of behaviour. My only explanation at that stage was, that maybe there is some kind of even higher frequency content, that I cannot hear, but triggers that. Maybe some sort of SACD-inherent ultrasonic? As I said, it's just a question and may seem strange, but I want to find out, what that could be...
I hope, now you are not thinking anymore, I am B/sing. I will do some search on ultrasonic in the forum.
So, I think nobody has a reason now to doubt the credibility of the phenomenon you've described. According to the information skramer contributed and according to what Dave says about your Maggys, it seems unlikely that your birds feel irritated by spectral components > 20kHz.
Then again, who on earth can claim that he knows *all* about how a bird's perception works?
Can you place a mic by the bird cage, record the signal, and analyze the spectrum? Maybe the cause is a side effect like, say, an oscillating amp or some sort of IM distortions and your birds get bothered by that.
check my post above. Birds have terrible high frequency hearing range. Your birds cannot hear past 12,000 KHz.Check the link I provided. Unless your "birds" are actually bats, there is no possibility they are "bothered" by ultrasonic noise.
Hisorry, did not read your answer until now - very interesting! As I said, I do have no explanation, so this was the only thing I could think of that made sense of my observations.
I'll observe them and post....
12,000 KHz should be 12,000 Hz. There must be some other explanation to what you have observed. Good Luck!
nt
NT
IBSmiester
Open Your Ears....
should be posted on teh DVD-A forum, just to watch the silly crap that errupts. Kekeluptus no doubt.
nt
Hi,good idea, I'll try that.
Here is a detailed explanation of the birds' behaviour:
The dual layer test is a good idea. I would also suggest doing it in as blind a fashion as you can - you might be cueing the bird behavior. Have a non-audiophile - one who doesn't know anything about SACD ect and can't hear the difference - do the entire experiment and record the behavior data. You should stay out of the room. There are always many unexpected and weird artifacts of any research method so try to control those. Interesting
Oh, that's the reason, why! Now I understand! I do trigger the birds behaviour, I am the one, who unconsciously HATES SACD-sound and "evaporate" my bad feelings and thus trigger the birds to be nervous!!!!!! I should stay away from that recording format....Just kidding!!!!! :-) :-) ;-)
I'll sit in my listening chair, the remote in my hand and just switch between the CD and the SACD-Layer and look, how my birds react....
Don't you think, that this should be sufficient for testing?
Honestly no. What's your objection to having a non-knowing person do the button pushing and observations? Let's face it, there is anxiety about ultrasonics in SACD. Although perhaps unlikely, one of many possible explanations for some of what you've seen is that birds can in fact sense your emotional state. If a crude device like a lie detector can work why not an amazingly exquisite thing called a bird - that's had several million years of successful evolution a major component of this being the "reading" of preditors in the environment. The birds could in fact be sensing your arousal etc via your pulse rate, PB, respiration etc. "The horse that could do Arithmatic" is a classic case of underestimating and misunderstanding animals. Is interesting and I'd use a non-invested person to do the procedure.
I'll observe them and post....
and try to get my friend, who does not care about HiFi at all, to do some tests and observations....
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