Update: Ok, I got the replacement sleepbuds and it's about the same, if not worse.
I went into a really quite room, recorded the sounds (15kHz to ~23kHz) from the sleepbud front and back, then created a spectrogram (see screenshots below). Sounds at those frequencies are highly directional, so I really had to be careful about mic placement. Interestingly, the left and right sleepbuds had a different spectrogram. I perceive more of the high pitch sound in the left sleepbud, regardless of which ear it is in.
I can hear up to about 19kHz-20kHz, so I'm pretty sure I'm hearing those sounds. I particually hear the sharp changes in frequency. Also, that frequency range in much higher than what the sleepbuds output as a noise masking sound. It can be hard to hear the sounds, but what I can hear is a bit like having a really, really, really thin needle stuck through my brain (uhh, metaphorically speaking).
I hear less of the high pitch sounds if I really shove them into my ear canal, so I'm wondering if either doing so (a) cuts out sound coming from the rear of the sleepbud, and/or (b) changes the sound attenuation in my ear canal.
My "workaround" at the moment is to (a) try minimizing sleepbud microcontroller/RF activity by using them soley in phone free mode (I think that reduces frequency changes) and (b) trying to ignore the sound.
Having the exact same issue. In the first night they were completely silent, but at the 2nd or 3rd night they started to have a really annoying background noise whenever I was playing a Bose sound.
It is some faint, high pitched twitter, sounds a bit like a cricket but with a frequency of 5-10x per second. It is not loud, but it's definitely noticeable and focusing on it is enough to drive you insane.
I even exchanged my first pair with a new one but it's having the same issue, tho it twitters a little bit less than the first one. If it keeps doing it I guess I have to refund them. God **bleep** it
This issue is also very unpredictable which makes it even more frustrating. Sometimes the sound is pretty silent, and other times it is so obnoxious that I would like to throw the buds against a wall.
PLEASE fix your Hard- and/or Software, Bose!
I replaced my sleepbuds because of the problem, though the interference noise I got is pretty low volume, they sent me an second pair, I just got it yesterday.
The new pair is way worse, it is absolutly unusable. It would do a mid volume high frequency whine every couple seconds, gives you a big headache. I am on the hotline waitling 20 minutes + for a return and refund now. When they said they found a solution and are sending out new batch, they are lying through their teeth.
You should call it whining sleepbud that interrupts your sleep.
Yep. For whatever reason they didn't send me a return label so I had to pay the shipping. However I bought it with paypal so I can get the shipping cost refunded.