source:Industry News release time:2021-12-11 Hits: Popular:Brand bar audio wholesale
It is an extremely important part of the sound system, because it is responsible for the key task of converting electrical signals into acoustic signals for human ears to listen directly. It has to directly deal with human hearing, which is very sensitive. And has a strong ability to distinguish the timbre of complex sounds.
Since the human ear’s subjective perception of sound is the most important criterion for evaluating the sound quality of a sound system, it can be considered that the performance of speakers plays a key role in the sound quality of a sound system.
We know that the sound component of a speaker is a speaker, but why use a speaker instead of listening directly to the speaker?
The purpose of the speaker box is mainly to prevent the sound wave signals on the front and back of the speaker diaphragm from directly forming a loop, causing only high- and mid-frequency sound with a small wavelength to be transmitted, while other sound signals are superimposed and cancelled Lost.
The physical model of the speaker is to open a hole in an infinite rigid baffle to install the speaker, so as to ensure that the sound signal on the front and back of the speaker will not form a loop, resulting in a sound wave loop.
However, in actual use, the speaker cannot be made infinitely large. Therefore, people use a baffle behind the speaker to form a closed space to ensure the frontal transmission of sound waves.
The ensuing problem: after the speaker is sealed, due to the atmospheric pressure problem, the larger the speaker cabinet, the more conducive to the restoration of low-frequency sound. Therefore, the volume of the general speaker is calculated as a compromise based on the speaker size of the mid-bass unit.
But many environments still do not allow too large cabinets. In order to further reduce the volume, people have designed baffles, inverted tubes, resonators, etc. in the cabinets according to the characteristics of sound waves and the requirements of strengthening low-frequency sound wave reproduction. In the low frequency band, the sound signal of a certain wavelength is enhanced, and the influence of atmospheric pressure on the sound restoration is further reduced.
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