AUTOMATIC ALERT/VOICE ADJUSTMENT BASED UPON AMBIENT NOISE LEVEL
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2001-Oct-25
Pocket pagers as well as other types of portable receivers are required to operate in environments with various audio noise levels ranging from a quiet meeting room to a noisy industrial facility. At present, most of these products require the user to manually set the alert and/or voice volume level. Some improvements to this technology have been made in recent years such as ESCALERT (a patented Motorola pager feature), in which the alert tone is gradually increased from a low setting to the maximum level or until the user hears the alert and resets the radio. However, ESCALERT is used only on tone only and data functions, because with voice messages there is insufficient time between the start of an alert and the voice message to permit this gradual increase in volume level.