KR930001050A - Audio signal recording and reproducing apparatus using semiconductor memory - Google Patents

Abstract

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Description

Audio signal recording and reproducing apparatus using semiconductor memory

Since this is an open matter, no full text was included.

Circuit diagram of the present invention.

Claims (2)

A sample and holder 10 for sampling and maintaining a voice signal passing through the low pass filter 5 for a predetermined time, and an analog digital converter for converting the analog signal held in the sample and holder 10 into digital data. 15), an encoder 25 which compresses the digital data of the analog digital converter 15 and writes it in the semiconductor memory 60, and the data read out from the data written in the semiconductor memory 60 and expanded into original data. A digital analog converter 35 for converting the analog signal into an analog signal and outputting the analog signal to the low pass filter 40, and a display driver 45 for displaying the data expanded by the decoder 30 on the display unit 50. And a voice signal using a semiconductor memory including a digital signal processor 70 which controls the encoder 25 data compression and the decoder 30 data expansion by a key input of the key input unit 20. Recording and playback equipment. The digital signal processor (70) of claim 1, wherein the digital signal processor (70) applies the output of the encoder (25) to the semiconductor memory (60) and the decoder (30) during data writing in response to the key input of the key input unit (20). An audio signal recording and reproducing apparatus using a semiconductor memory configured to control a switch SW1 for interrupting the output of 25. ※ Note: The disclosure is based on the initial application.