Stylus-Groove Relations and their Influence on Phonograph Reproducer Design
Frederick Vinton Hunt, J. A. Pierce · The Journal of the Acoustical Society of America · 1940
As part of a continuing study of high fidelity sound reproduction from phonograph records, we have made a survey of the groove shapes being used in current release records. The results of this survey provide data for considering the stresses set up in the record material for various configurations of the stylus-groove contact. In connection with our previous work on tracing distortion, this analysis establishes certain requirements which must be satisfied in order to secure positive tracking in reproduction from lateral-cut records. The structure of currently available “high fidelity” reproducers will be discussed in the light of these requirements. A preliminary report will also be presented concerning an analysis of “translation losses,” harmonic distortion, and other effects of transient elastic deformations of the groove wall by the reproducer stylus.