Sound recording system
First Claim
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1. In a recording system for a sound recorder having an input, the combination of:
- a signal generator for generating an A.C. signal of predetermined amplitude within the frequency range below about 14 Hz.;
means for combining additively with said A.C. signal an audio program signal falling substantially within a frequency range substantially above 14 Hz. and of substantially smaller amplitude than the maximum amplitude of said A.C. signal;
and means for applying the additively combined audio program signal and A.C. signal to the sound recorder input.
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Abstract
In recording an audio program, such as music or voice, on a magnetic tape recorder an A.C. signal generator operating at a frequency below about 14 Hz. provides an A.C. baseline for the audio program signal. This 14 Hz. or lower A.C. signal is sensed by the listener'"'"'s ear to create an Alpha or Theta state in his brain when the tape is played back.
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Citations
9 Claims
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1. In a recording system for a sound recorder having an input, the combination of:
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a signal generator for generating an A.C. signal of predetermined amplitude within the frequency range below about 14 Hz.; means for combining additively with said A.C. signal an audio program signal falling substantially within a frequency range substantially above 14 Hz. and of substantially smaller amplitude than the maximum amplitude of said A.C. signal; and means for applying the additively combined audio program signal and A.C. signal to the sound recorder input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification