Volume control in movie theaters

H - Electricity – 04 – S

Patent

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Details

H04S 3/00 (2006.01)

Patent

CA 2519607

A motion picture soundtrack reproduction system has a center front soundtrack channel and a plurality of other soundtrack channels. A volume control adjusts the gain of all the channels. The volume control has a range of settings from a minimum to a maximum, the gain of the center front channel having substantially a first relationship to the volume control settings and the gain of the other channels having substantially a second relationship to the volume control settings, the relationships being such that for a range of volume control settings less than a first setting the gain of the center front channel remains substantially constant while the gain of the other channels decreases as the setting decreases or decreases more gradually than the gain of the other channels as the setting decreases.

Cette invention concerne un système de reproduction de la bande son d'une production cinématographique comportant un canal de bande son avant central ainsi qu'une pluralité d'autres canaux de bande son. Un bouton de réglage du volume règle le gain de tous les canaux. Le bouton de réglage du volume comprend une gamme de paramètres compris entre un minimum et un maximum, le gain du canal avant central présentant sensiblement une première relation avec les paramètres de réglage du volume tandis que le gain des autres canaux présentent sensiblement une seconde relation avec les paramètres de réglage du volume, lesdites relations étant telles que pour une gamme de paramètres de réglage du volume inférieure à un premier paramètre, le gain du canal avant central demeure sensiblement constant tandis que le gain des autres canaux diminue au fur et à mesure que le paramètre diminue ou diminue plus progressivement que le gain des autres canaux au fur et à mesure que le paramètre diminue.

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