We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
Fig. 3. Binaural recorder in field use by auto manufacturer testing for noise.
sound sources which may be spread around a given area.
Court recording is one very important and useful application of this equipment. With it, accurate records including differentiation between the various persons in a courtroom may be made. A study by Ray Hirst6 of monaural court recording has shown that too often court records are at variance with what actually transpired because the court clerk was unable to follow testimony fast enough to accurately transcribe data as it was presented; or because the clerk heard something wrong; or because the clerk simply made a mistake. On one occasion, to our knowledge, it was necessary to reverse the written record due to a stenographic error. Application of this equipment to a Court of Justice would help to improve the carrying out of justice. We have carried out courtroom tests with very effective results and have some excellent demonstration tapes.
Another application of this binaural
technique is that used by police^and secret-service departments for secret recording of conversations. The standard accepted methods of masking a voice's intelligibility are by the use of continuous tapping noise, by the running of faucet water or by the turning up of a radio for background masking noise. A monaural system cannot distinguish between the masking noise and the intelligence it is desired to detect. A binaural system localizes the attempt at masking and allows the listener to associate direction with the desired sound so that he may achieve intelligibility.
Business, technical or military conference proceedings are a natural for this type of recording since the data may later be transcribed by a stenographer with considerable freedom from error caused by simultaneous talking or masking. A stenographic transcription may be made of two people talking simultaneously since by mental localization the stenographer may concentrate
Otto C. Bixler: Binaural Recorder
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