Acoustic principle of sound.Bar audio set Processor

　　Horn sounding principle

　　The same important equipment of the sound system is the loudspeaker, which is generally composed of a loudspeaker unit and a box. The horn unit acts as the sound generating part, and the box body acts as the supplement of the horn unit to correct the sound. The sound generation principle of the horn unit is a kind of conversion from electrical energy to sound. When different electronic energy is transmitted to the coil, the coil generates an interaction between energy and the magnetic field of the magnet. This interaction causes the vibration of the paper tray. Because the electronic energy changes at any time, the coil of the horn will move forward or backward, so the paper tray of the horn will move with it. These actions change the density of the air and generate sound.

　　Acoustic psychology

　　When a tree in the forest collapsed, it made a loud noise, but no one was in the virgin forest, so it could not be heard. Is there a sound coming out? The sound must have come out, because when the trunk and branches touch the ground, they will produce some sound, but no one can hear it. But the sound is different for humans or other animals, so this is what is called psychology in acoustics.

　　Acoustic history

　　In 1915, an American named E.S. Pridham put a telephone receiver of the time on a horn that played records, and the sound could be heard by a group of people celebrating Christmas in San Francisco. Electroacoustics was born. When the First World War ended, at the inauguration ceremony of President Harding of the United States, Bell Company of the United States connected the dynamic receiver of the telephone to the horn of the record player at that time, and was able to transmit the voice to a large group of people watching the inauguration ceremony of the President. As a result, a lot of professional sound research and development of sound reinforcement engineering were generated. Sound researchers are not only trying to improve sound equipment, but also doing various kinds of sound experiments to understand the human response to hearing. However, people at the highest level of sound research all understand that acoustics is a holistic study. They have made great contributions to understanding every link of sound equipment and human physiological response to hearing.

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