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Information signal delay system utilizing random access memory

  • US 4,633,331 A
  • Filed: 06/06/1985
  • Issued: 12/30/1986
  • Est. Priority Date: 06/06/1985
  • Status: Expired due to Term
First Claim
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1. Apparatus for attachment to an operator-actuated audio tape recorder to enable a real-time audio signal to be selectively recorded on a delayed basis, comprising:

  • a microphone for receiving the audio signal and producing an electrical signal related thereto;

    means for converting the electrical signal into a digital signal;

    a solid-state memory device having a plurality of addressable storage locations for storing the digital signal;

    an address generator for sequentially addressing each of said storage locations in synchronism with the digital signal from said converting means;

    control means for causing said memory device to read out information stored at an addressed location and subsequently store the digital signal from said converting means at that location;

    synthesizing means for receiving digital information read out of said memory device and converting said information into an analog signal; and

    output means for connection to an audio tape recorder to couple the analog signal from said synthesizing means to the recorder.

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