TY - JOUR
AU1 - Jaffe, David L.
AU2 - Morrissette, Diane L.
AB - ten per second used by Dr. Heyes, thus tion. One factor which limits their use is Letters to the decreasing the number of audible clicks high cost. Due to the relatively small by one-half. The degree of annoyance of number of potential consumers who are these clicks to the user may be depen­ visually handicapped, mass production Editors dent on individual tolerance andlor envi­ techniques and the resulting lowered ronmental setting. In work done at the costs are not possible. If, however, effi­ Veterans Administration, the clicking cient aids could be developed which uti­ was noticeable in the initial stages of lize readily available technology, then re­ development while working indoors. In search, development, and manufactur­ outdoor settings, it was not noticeable. ing costs could be reduced considerably. Don't Discount Polaroid Hardware Of the twelve subjects to date who have In view of the experiences of the VAl For Head Protector tried the prototype, not one has men­ Stanford team and the points made tioned that the clicking was annoying or above, we would urge designers, in­ To the Editors: a problem in any way. Nevertheless, structors, and users not to discount the In the article, A 'Polaroid' Ultrasonic 
TI - Don't Discount Polaroid Hardware for Head Protector
JF - Journal of Visual Impairment & Blindness
DO - 10.1177/0145482X8207600809
DA - 1982-10-01
UR - https://www.deepdyve.com/lp/sage/don-t-discount-polaroid-hardware-for-head-protector-YMkjQCEiVe
SP - 328
EP - 328
VL - 76
IS - 8
DP - DeepDyve
ER -