Transcription and restoration – Active Transducer Research Ltd

With extensive experience – gained from a lifetime’s love of music, and of the technology that carries it – and using first-rate professional recording and playback equipment, we can transcribe and restore most analogue audio formats.

Gramophone records (to give them their full BBC name!) are transferred using a broadcast standard turntable (Technics SP10-II) and a range of stylii (needles if you must) and pickup cartridges, chosen to extract the best possible sound from the source disc. Disc transfers can then be processed using sophisticated digital algorithms that can pretty much eliminate clicks, rumble and crackle without making the result muffled or dead-sounding.

Audio transcription services include:

Transferring vinyl or shellac gramophone records to digital (cassette or open-reel analogue tape also available), with comprehensive audio restoration as required
Transferring 1/4 inch open-reel tapes to digital (or analogue cassette if you prefer) – we can cope with various different track formats and tape speeds
Transferring cassette tapes to digital
Post-transfer restoration and enhancement (note: we will always give you a copy of the un-processed “open” transfer in addition)

Power Electronics in Audio

With its emphasis on controlling, converting and delivering energy – as opposed to signals and information – switched-mode power electronics originally had little, if any, relevance to the world of audio engineering. The past three decades have, however, seen a dramatic increase in the overlap between these once quite distinct topics, with switching power supplies now ubiquitous and Class D amplification already a mainstream technology. In January 2023, as incoming Chair of the Audio Engineering Society’s UK Section, ATRL’s Mike Turner drew on 35 years’ professional experience spanning both disciplines, to deliver a talk exploring the origins of power electronics and the developments that led to its rapid growth, together with an introduction to some of the key basic technical considerations. The talk concluded with a brief look at some application examples, all, of course, with an emphasis on audio. You can view the presentation here:

You can also download a PDF copy of the slide presentation HERE.

The Audio Engineering Society

The Audio Engineering Society is the only professional society devoted exclusively to audio technology. Founded in the USA in 1948, the AES is now an international organization that unites audio engineers, creative artists, scientists and students worldwide by promoting advances in audio and disseminating new knowledge and research.

12,000+ members are affiliated with 90+ AES professional sections and 120+ AES student sections around the world that provide members valuable opportunities for professional networking and skill and career growth.

Join us today!

https://aes2.org/