Hi to all,
the latest "ring tone" being offered for mobile phones claims to be "silent" to all adults, teachers and parents.
The TV ad says it is a 17 kHz tone.
Is this for real ???
Can a GSM mobile output such high frequency ?
Will its speaker reproduce it at audible level anyhow?
........ Phil
Might be able to replace those high dollar tweeters with mobile phone speakers.
I don't know how loud it would be, however, it is being advertised widely now. I can only clearly hear to 10KHz on a sine wave, I get 12 - 16KHz on
1/3 oct Pink Noise. Why is there a difference. What I do notice is that even though I cannot hear the higher frequencies, I am left with a very specific feeling in my ears if I do play pink noise at the higher frequencies for more then a few seconds even though the volume is not high."APR"
** The pink noise probably still has components down to below 10kHz.Depends how the 1/3 octave bands have been derived and how sharp the band limits are.
....... Phil
The disk I have is from a Mr Anderson, here in Australia off eBay. I believe he put this disk together for an audio course he was involved with.
Seeing they are a small speaker I would assume it would produce the higher frequencies more easily.
Michael
Have something to add? Share your thoughts — no account required.
Ask the community — no account required