Title :
The pyramid stylus
Author_Institution :
Fidelitone, Inc., Chicago, Ill
Abstract :
A new shape for a phonograph needle stylus is described which greatly improves the reproduction possibilities from phonograph records. The new stylus was specifically produced for use with 45°-45° stereo recordings, but will perform equally well on all microgrooved monaural recordings. The scheme described evolves a shape of reproducing stylus having a basic geometry relating to the cutting stylus used in forming all microgrooves. Computations, experimental data and charts are also used to support the improvements to be expected in reproduction performance.
Keywords :
Acoustic noise; Acoustical engineering; Audio systems; Electronics packaging; Geometry; Mechanical factors; Microscopy; Needles; Production; Shape;
Journal_Title :
Audio, IRE Transactions on
DOI :
10.1109/TAU.1959.1166221
