Universal Phonograph Styli

Data Dictionary: Metadata for Phonograph Records

The creation and maintenance of a metadata data dictionary is essential to large-scale digital repositories. It assists the process of data entry, ensures consistency of records, facilitates semantic compatibility and interoperability between systems, and, most importantly, forms the foundation for efficient and effective information retrieval infrastructure. In this paper we explain in detail ...

Mani and shapur a universal faith for e universal kingdom

Alternative Digitization Approach for Stereo Phonograph Records Using Optical Audio Reconstruction

This paper presents the first Optical Audio Reconstruction (OAR) approach for the long-term digital preservation of stereo phonograph records. OAR uses precision metrology and digital image processing to obtain and convert groove contour data into digital audio for access and preservation. This contactless and imaging-based approach has considerable advantages over the traditional mechanical me...

Acoustical Impedance and the Theory of Horns and of the Phonograph.

The introduction more than thirty years ago of the term 'impedance' by Mr. Oliver Heaviside has been productive of very great convenience in the theory of alternating currents of electricity. Unfortunately, engineers have not seemed to notice that the idea may be made as useful in mechanics and acoustics as in electricity. In fact, in such apparatus as the telephone one may combine the notions ...

FLOWS AND UNIVERSAL COMPACTIFICATIONS

The main purpose of this paper is to establish a relation between universality of certain P-compactifications of a semitopological semigroup and their corresponding enveloping semigroups. In particular, we show that if we take P to be the property that the enveloping semigroup of a compactification of a semitopological semigroup s is left simple, a group, or the trivial singleton semigroup, t...