In phonetic research at the I.P.O. taperecorders are used with tape loops and gates to produce signals, vowels, or consonants. To gate signals, vowels or consonants from a tape, a reference point on the tape is required. As reference point the tick is used which is caused by the joint of the tape loop or a tick which has been taped. In many cases it appeared that unwanted ticks on the tape masked the reference point for the gate so that the experiment failed. To answer this problem the P.O.B.U. x) has been designed. It enables a special pulse to be taped and recognises this pulse only,i.e. it will not accept any other signal as a reference point.
|Number of pages||2|
|Journal||IPO Annual Progress Report|
|Publication status||Published - 1970|