disc transfer

The gramophone record appeared in the 1920s and was the storage medium for music, until the arrival of the CD. Millions of vinyl discs are still made each year for this now niche format.

The microgroove disc was introduced in 1948 by Columbia and equalisation standardised by the RIAA in 1953. Stereo appeared about 10 years later.

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Introduction

Discs are carefully cleaned then transferred using styli from the Expert Stylus Company, an SME 3009 Mk2 arm and Shure Cartridges.

Stylus selection is essential for 78 rpm discs where groove dimensions vary.

Digitisation

The transfer signal is digitised using a high quality A/D converter to produce the Archive Master file. This file is the most accurate digital copy possible of the analogue original, and is the digital reference for further work.

Restoration

Disc transfer is usually followed by restoration work to remove the clicks and crackles. Bandwidth limited recordings and broadband tape hiss interact making the extent of restoration dependent on final requirements.

Dolby A noise reduction
images © pierhouse
Dolby A noise reduction
images © pierhouse
Dolby A noise reduction
images © pierhouse