Ultrasonic Directional Sound Speaker Knowledge - Four Practical Solutions For Directional Propagation Of Sound Waves

Audible sound wave is a rare mechanical wave, which is spherical, divergent in air, and easily attenuated, affecting the transmission effect. At the same time, because the tacit consent of audible sound waves will be transmitted to all parts of the world, it is easy to disturb people. If you can handle the directional transmission of sound waves, the following results can be lost and handled well.
Sound waves are spherical waves conveyed easy to attenuate and easy to disturb the people, the vast majority of speakers we usually hear actually retracted sound waves are 360 degrees radiated out, different frequencies, angles, sound wave energy will be different, but in the air transmission is very easy to attenuate.
At the same time, sound waves (especially low-frequency sound waves) are fundamentally directional, so even if the audience is not on the front of the speaker, but on the front and back of the speaker, the sound feels very loud. High-frequency sound waves, its directionality will be stronger, but its side front (45 degrees/315 degrees) of the speaker is only attenuated by about 3~6dB.
As a result, there are two consequences: sound waves are easily attenuated when transmitted in the air, the transmission interval is short, and when the audible sound waves reach the audience, the sound intensity often becomes very weak, affecting the clarity of speech. At the same time, the sound waves coming out of the speaker are simply directionless, which is easy to form disturbing results.