06-07-2015, 09:40 AM
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Isn't it also possible to hear the high pitch? This happened with me when my friend accidentally turned on my silent subliminal and played it through the TV speakers. It was so loud, I heard it from the hallway, but he didn't hear a thing sitting right in front of it.
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I find it questionable that the TV speakers are capable of that high a frequency, so they are creating a sound in the high-end of audible range. Speakers that are truly capable of meeting > 17.5 kHz cost about $250 and up. It is unlikely that a TV that cost $500-700 are outfitted with such speakers.
As a test, I have ramped up my Audioengine speakers to the max for a few minutes without anyone hearing anything. The FrequenSee showed a dB reading of ~ -20dB which screaming loud and not a peep was heard out of my speakers.
In the end... you are using cheap speakers for the ultrasonics and that is why you are hearing a high pitched squeal.
Isn't it also possible to hear the high pitch? This happened with me when my friend accidentally turned on my silent subliminal and played it through the TV speakers. It was so loud, I heard it from the hallway, but he didn't hear a thing sitting right in front of it.
[/quote]
I find it questionable that the TV speakers are capable of that high a frequency, so they are creating a sound in the high-end of audible range. Speakers that are truly capable of meeting > 17.5 kHz cost about $250 and up. It is unlikely that a TV that cost $500-700 are outfitted with such speakers.
As a test, I have ramped up my Audioengine speakers to the max for a few minutes without anyone hearing anything. The FrequenSee showed a dB reading of ~ -20dB which screaming loud and not a peep was heard out of my speakers.
In the end... you are using cheap speakers for the ultrasonics and that is why you are hearing a high pitched squeal.
