What is a speaker
Speaker is also called "horn". It is a very commonly used electro-acoustic transducer device, which can be seen in sound-producing electronic and electrical equipment.
The speaker is one of the weakest components in audio equipment, and it is the most important component for audio effects. There are many types of speakers, and the prices vary greatly. The audio frequency electric energy makes the paper cone or diaphragm vibrate and resonate (resonate) with the surrounding air to produce sound through electromagnetic, piezoelectric or electrostatic effects. According to the energy conversion mechanism and structure, the moving coil type (electric type), capacitive type (electrostatic type), piezoelectric type (crystal or ceramic), electromagnetic type (compression spring type), electric ion type and pneumatic type speakers, etc., electric type The loudspeaker has the advantages of good electroacoustic performance, firm structure, low cost, etc., and is widely used; according to the sound radiation material, it can be divided into paper cone type, horn type, and diaphragm type; according to the shape of the paper cone, it can be divided into circle, oval, double cone and rubber Folding ring; divided into bass, midrange, and treble according to the working frequency, and some are divided into recorder-specific, TV-specific, ordinary and high-fidelity speakers, etc.; according to the voice coil impedance, it is divided into low impedance and high impedance; according to the effect, it is divided into direct radiation and environment Sound and so on.
What is a speaker
speakers are divided into built-in speakers and external speakers, and external speakers are generally referred to as speakers. The built-in speaker means that the MP4 player has a built-in speaker, so that users can listen to the sound of the MP4 player not only through the earphone jack but also through the built-in speaker. An MP4 player with built-in speakers can eliminate the need for external speakers, and it can also avoid the inconvenience caused by wearing headphones for a long time.
