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Patent

Portable tape-recorder

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TLDR
In this paper, a sound reflector is used over a microphone on the top face of a chest-pocket size small tape-recorder, so that the voice of a person who is talking to the person who carries the taperecorder is reflected to effectively reach the microphone provided on top face.
Abstract
A sound-reflector, for instance a tilted plate, is set over a microphone on the top face of a chest-pocket size small tape-recorder, so that voice of a person who is talking to the person who carries the tape-recorder is reflected to effectively reach the microphone provided on the top face. By means of the sound-reflector, both the voice of the tape-recorder carrying person and the voice of his companion are recorded with more even levels in comparison with recordings by conventional chest-pocket type tape-recorders without such a sound-reflector.

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