| 摘要 |
A portable voice amplifier includes a casing providing a housing and including a flat base, a curved front wall extending from the base upwardly and over the base, when viewed from the side, to the top of the unit. A speaker is mounted in the lower portion of the curved front wall, and the casing includes a lower section partially formed by the lower portion of the curved front wall and having a progressively narrow depth preceding from the base to approximately the midsection of the casing. An upper section of the housing has generally uniform depth and width from the midsection to the top of the unit. The upper section is designed to be held conveniently by the hand of the user, with a microphone located on the rear of the upper housing section so that in normal use the entire unit extends below the face of the user and is conveniently and comfortably held with a single hand. The unit includes a time-of-day clock and elapsed timer, with all of the controls located adjacent the hand of the user when it is held in a normal position. A lanyard may be used to secure the unit around the neck of the user to free the user's hands for demonstrations, hand gestures or writing on a board during a presentation. The unit is designed for clear audio speech delivery for smaller audiences and for medium sized rooms.
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