does this emit high frequency sound?
253873
I have two of these, and one emits a high frequency sound, but it is slight. I believe I've only noticed the sound when the transformer was on, not when it's just plugged in and off.
253874
No.Our unit is mounted on the wall in a screened in porch. We used the porch often and do not even realize it's there.
1226920
Yes, when i could get it to work it will make a noise tick tick tick tick. Its not loud but can be heard.
620997
Depending on how you set it it may make a small noise. Normally though, no.
2146154
It does but it is very subtle. I used it this morning and I only heard a small peep. Mine at least, doesn't always make much sound. Love it anyway.
1322430
No, It's just a trigger. It needs to be fed into a sound module to generate a signal your ears can recognize. Sorry.
296218
No, when the unit is on high it is loud but no high pitch noise and on whisper it is very quiet.
480072
No it doesn't. And it's a very short time that it plays. I used it more for the visual distraction and had a separate white noise machine.
510808
I don't know about the audible sound. Of course the very high-frequency sound waves/microwave No.
1665954
It does make a sound but its barely audible. I leave mine in my master bathroom and cannot hear it when its running. If I'm standing next to it, I can hear a very faint hum.
1252196
Mine makes a very quiet high pitch sound, but you have to lean close to hear it.
2276484
Great ears, you must be under 30 or else you are a canine! Never noticed until you asked this question, Yes it does make a high pitched sound. I can only hear it if I am within 12" of the unit - further away and I hear nothing. It is not very loud, mine is on a tile surface most of the time, other counter or table tops may amplify the sound. Great pickup on your part.
72420
Yes.but I find it to be a soothing white noise at night. On low it is fairly quiet. I turn it on medium or high when I go to bed.
1556552
It is normal. When music is not on you might hear a high pitch but not while listening to music. Enjoy!
258142
No. This device amplifies all of the local sounds. It does not pick out certain sounds.
2125175
The Manufacturer says it wont. It is a high frequency that we cant hear. Maybe like a dog whistle.
95291
If you're 100% sure it's not the source, then yes. I don't have hum unless I am on high volume but I have had a lot of source hum from my sound card. So check that out before shipping it off.
1877799
Yes. I wouldn't call it high fidelity, but you can hear the speaker output almost as well as when its in the open.