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Originally posted by shiman
reply to post by timetothink
old tube tv's, or CRT monitors give off this high pitched noise that does give me minor headaches, but it is in no way a mind control device. That's just the noise the tubes make when they're charged with thousands of volts.
Re: Audio problem - weird digital/computer type sound in background Options 03-24-2012 09:58 PM My friends experienced this, so I decided to look into it. A few of us noticed that it went away when we switched from listening in stereo to listening in 5.1 surround. Which makes us think that it is an encoding/decoding problem. Is anyone experiencing this when listening to both typical stereo sound coming from their TV as well as 5.1 in HD?
Originally posted by shiman
reply to post by YAHUWAH SAVES
I'm not too sure, but are you talking about the alternating tones and such right before the screen shows the sparkling diamond thing?
Originally posted by shiman
reply to post by Bedlam
What i heard sounded more like 8 bit digital tones, i did hear the triangle, though, when they actually revealed the diamond.
Your thoughts on this. Can you hear the audio tones too
Originally posted by timetothink
I can't hear them...my daughter frequently complains about certain tv's making a noise that gives her a headache, but I can not hear that either.
Very interesting, though I am going to ask others if they noticed it.
The Nielsen audio watermark algorithm modifies select frequencies in short blocks of audio to represent the code. The code frequencies lie in the range between 4.5kHz and 6kHz and are determined by a pseudo random sequence. Codes are rendered virtually inaudible by taking advantage of the psychoacoustic masking effect of neighboring frequencies. The watermark is robust enough to survive the challenges of broadcast audio compression and other artifacts encountered such as gain changes and format conversions. Spanning 2s, the message includes 50 bits of data: a 16-bit source identifier, a 32-bit timestamp and 2-bit level identifier. The source identifier and the timestamp guarantee a framework for unique content identification as well as identifying the time of broadcast. The payload also includes start-of-message and error correction bits. The watermark is inserted by a watermarking encoder that is installed at all major broadcast/cable networks, syndicators, and local stations. The watermarks are multiplexed appropriately to identify the owner and distributor. Figure 2 shows the flow of the signal through the broadcast chain.
The Nielsen audio watermark algorithm modifies select frequencies in short blocks of audio to represent the code. The code frequencies lie in the range between 4.5kHz and 6kHz