subliminals tapes

does anybody know what frequencies producers use to create subliminal tapes??

The script I bought raises the regular spoken word up to 15.5 KHz. Unfortunately the MP3 compression I use cuts out frequencies this high.

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Originally Posted by Tom

The script I bought raises the regular spoken word up to 15.5 KHz. Unfortunately the MP3 compression I use cuts out frequencies this high.

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thanks Tom, btw what MP3 compression do you use?