Zarbos a écrit : ↑16 juil. 2023, 21:08
Merci beaucoup Bruno
Il semble que pour les enregistrements, Mercury utilisait un unique microphone Telefunken 201
Ce qu'on peut y lire sur le livret de ce cd par exemple paru en 91 made in US
Paul Paray, Detroit Symphony Orchestra – French Opera Highlights.jpg
An Original 35mm Magnetic Film Recording
The Zampa and Crown Diamonds Overtures were recorded November 19, 1960, the Saint-Saëns Bacchanale on March 11, 1961. All were recorded on 3-track half-inch tape. The Faust excerpts, the Bizet Danse Bohemème, the Royal Hunt and Storm, The Phèdre Overture, and the Gavotte from Mignon were recorded on March 17, 1962, using 3-track 35mm magnetic film. All works were recorded at Cass Technical High School in Detroit, using three Telefunken 201 microphones.
Only ORIGINAL MASTERS used for transfer to Compact Disc.
RECORDING ON 35mm MAGNETIC FILM
This compact disc was made directly from the 35mm magnetic film masters, which were recorded on a specially modified magnetic film recorder, using a closed-loop film circuit that guides the film constantly and closely along its route past the recording head. This film (magnetically coated cellulose-acetate perforated motion-picture stock) is nearly an inch and a half wide, which means that each of the three tracks has a width of 220 mils (similar tracks on normal magnetic tape are only 90 mils). The closed-loop path, the low-impedance head assembly, and the faster rate of speed (18 inches per second, in comparison to 15 inches per second for tape) made it possible to record and reproduce both a better transient response and extended frequency range. As in all Mercury Living Presence recordings, no filtering, equalization, limiting, or compression of dynamic range was used on the master recording.
In bringing these historic recordings to compact disc, the aim of the production and engineering team was to capture as accurately and completely as possible the true sound of the original tape and film masters.
For the transfer of these masters to the digital domain, the original Mercury vacuum-tube Westrex film recorder and Ampex 3-track tape machine were restored. In addition to providing the exact reciprocal of the original equalization curve, the tube technology replicated the full rich sound, clarity of instrumental timbre, and solid convincing soundstage preserved on the original tapes or film.
Only the original masters were used for CD transfer, and, as in the recording sessions themselves, no equalization, filtering, compression, or limiting was used. The actual analog-to-digital conversion device used 128 times oversampling with proprietary noise-shaping techniques.
Throughout the CD mastering process, the digital master was compared to and matched against the 3-track master to ensure as true and faithful a digital reproduction of the original as possible.
This combination of classic tube technology and state-of-the-art digital equipment re- creates for compact disc the wide dynamic range, lifelike clarity, and spatial perspective of Mercury Living Presence.
Because of the historical significance of the Mercury Living Presence recordings, and in response to requests from record collectors, it was decided to use the original LP covers and liner notes whenever possible.
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, me too (j'avais craqué il y a des années sur les 3 fameux coffrets Mercury, folle jeunesse dispendieuse 
)
C'est exact pour le film, mais pas que. 
