Renseignements généraux

Nº de série

S/O

Nº de partie

3

Nombre total de parties

7

Ou

S/O

Brevets

S/O

Description générale

Metal connectors with synthetic inserts and a synthetic cable cover and cylinder

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

48,5 cm

Largeur

2,3 cm

Hauteur

2,3 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Communications

Catégorie

Son

Sous-catégorie

S/O

Fabricant

Ou

NEUMANN

Pays

Allemagne

État/province

Inconnu

Ville

Berlin

Contexte

Pays

Canada

État/province

Ontario

Période

ca. 1982-1998

Canada

Bell Northern Research, was the research and development subsidiary of Northern Telecom (later Nortel Networks) and Bell Canada. It was built by Northern Telecom at its Trans-Canada plant in Montreal. Northern Telecom and its predecessor, Northern Electric, was for decades Canada’s largest manufacturer of telecommunications equipment. Originally a subsidiary of the AT&T-owned Western Electric, for which it manufactured American-designed products for the Canadian market, Northern Electric became Canadian-owned in the 1950s and in the 1960s began to design and produce equipment to meet the distinctive needs of Canadian telecommunication companies. In the 1970s, through its new research subsidiary, Bell Northern Research, the company made a concerted shift from conventional analogue equipment into the emerging field of digital communications, becoming in the 1980s the first equipment supplier to provide a complete line of fully digital switching and transmission gear. During this decade the company moved aggressively into export markets, and opened manufacturing and R&D operations in several countries. The company’s sales soared during the internet boom of the 1990s, but a combination of poor financial decisions and a failure to maintain its technological edge led eventually to its bankruptcy in 2009. The original Bell Northern facilities were designed with cutting edge telecommunications research and development in mind with the first three buildings on the campus featuring laboratories, an extensive research library, and an anechoic chamber. The anechoic chamber was the focal point of the Bell Northern Research acoustics research examining both the technology and placement of speakers and microphones in telecommunication devices. The anechoic chamber group was organized under the Industrial Design and working together with design were responsible for the development of the acoustic properties of most products. (From the Acquisition Proposal, see Ref. 1)

Fonction

Used to connect the microphones inside a dummy head to external equipment.

Technique

Shaped to resemble a human head, this binaural dummy, allows for more realistic audio recordings that more resemble real world conditions. (From the Acquisition Proposal, see Ref. 1)

Notes sur la région

Inconnu

Détails

Marques

In recessed letters on both connectors: "A3F SWITCHCRAFT/ U.S. PAT. 3219961/ CAN. PAT. 761114"/ On the proper bottom of the connectors: "SWITCHCRAFT"/ On the green end of the connectors: "2/ 1/ SWITCHCRAFT/ 3"/ On the grey cylinder: "P/ BEYERDYNAMIC/ TR/BV 345 001 001 F-F/ Made in Germany/ 03 84/ S"

Manque

Appears complete

Fini

The cable consists of two silver coloured connectors with green ends connected by a black synthetic cord. There is also a light grey cylinder with black markings attached onto the cord.

Décoration

S/O