Alarm clock for directionally propagating sound

Abstract

The invention discloses an alarm clock for directionally propagating sounds. The alarm clock comprises a periodic sound wave generator which is used for periodically generating sound waves; a first-level sound collection cover which is an opened hemisphere, wherein a loudspeaker is set at the center of the bottom of the first-level sound collection cover; a second-level sound collection cover which is the opened hemisphere, wherein an opening size of the second-level sound collection cover is greater than that of the first-level sound collection cover, the first-level sound collection cover and the second-level sound collection cover are set in opposite directions, and a through hole is set at the center of the bottom of the second-level sound collection cover; a sound isolation cover which is the opened hemisphere, wherein the sound isolation cover and the second-level sound collection cover are set in the same direction, and set distance exists between the sound isolation cover and the second-level sound collection cover; and a holder which is used for carrying out connection on the center of the bottom of the first-level sound collection cover and the center of the bottom of thesecond-level sound collection cover, and is connected with the center of the bottom of the sound isolation cover through the through hole at the center of the bottom of the second-level sound collection cover. Through adoption of the alarm clock provided by the invention, the propagation is mainly carried out according to a specific direction, the propagation of prompt sounds out of the specificdirection is reduced, and the interference and influence of the alarm clock on surrounding people are reduced.

Description

technical field [0001] The invention relates to the field of sound wave directional propagation, in particular to an alarm clock for directional sound propagation. Background technique [0002] The alarm clock realizes the regular reminder function by generating a beep at a specific moment, which is widely used in people's daily life, but in some non-private occasions, the alarm beep as noise will cause inconvenience and interference to other people around. This is because traditional alarm clocks mostly use ordinary speakers to generate prompt sounds. Since the sound intensity decreases rapidly with distance, in order to achieve sound transmission within a certain distance, the speaker is set to a higher sound intensity, but the sound propagates in all directions at the same time, so it will affect to other people near the alarm clock. Contents of the invention [0003] The object of the present invention is to provide an alarm clock with directional sound transmission, ...

AI Technical Summary

Problems solved by technology

[0002] The alarm clock realizes the regular reminder function by generating a sound at a specific moment, which is widely used in people's daily life, but in some non-private occasions, the sound of the alarm clock as noise will cause inconvenience and interference to other people around

This is because traditional alarm clocks mostly use ordinary speakers to generate prompt sounds. Since the sound intensity decreases rapidly with distance, in order to achieve sound transmission within a certain distance, the speaker is set to a higher sound intensity, but the sound propagates in all directions at the same time, so it will affect to other people near the alarm clock

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