What letters are used to indicate the speaker's high and low notes?

Bass: treble: treble balance: left and right channel balance power amplifier, commonly known as "power amplifier", is the most basic equipment in the sound system. Its task is to amplify the weak electric signal from the signal source (from the mixer in the professional sound system) and drive the speaker to emit ...-bass. A treble is a treble-usually there is a bass volume on the speaker. Treble is treble microphone bass microphone bass-bass treble.

Loudspeaker is a device that converts electrical signals into acoustic signals, and it is an extremely important part of the sound system.

It uses the power amplifier in the box to amplify the audio signal, and then the speaker plays back the sound itself to make it louder.

The sound-producing part of the speaker is the speaker, but why use the speaker instead of listening to the sound directly?

The function of the sound box is to prevent the sound wave signals on the front and back sides of the loudspeaker diaphragm from directly forming a loop, so that only high and intermediate frequency sounds with very small wavelength can be transmitted, while other sound signals are cancelled by superposition.

The physical model of the speaker is to open a hole in an infinite rigid barrier and install the speaker, which can ensure that the sound signals before and after the speaker will not form a loop and produce an acoustic loop.

But in practice, it is impossible to make the loudspeaker infinite, so people use a baffle behind the loudspeaker to form a closed space to ensure the forward propagation of sound waves.

The following problems: Due to the problem of atmospheric pressure, the larger the box of the sound box, the more favorable it is for the reduction of low-frequency sound. Therefore, the volume of the general speaker is calculated according to the speaker size of the bass unit.

But in many circumstances, big boxes are still not allowed. In order to further reduce the volume, according to the characteristics of sound waves and the requirements of strengthening the playback of low-frequency sound waves, people have designed sound insulation boards, inverters and * * resonators in the box, mainly to enhance the sound signal of a certain wavelength in the low-frequency band and further reduce the influence of atmospheric pressure on sound reproduction.