Electroacoustic components refer to components that use electromagnetic induction, electrostatic induction or piezoelectric effect to realize the mutual conversion of electrical signals and sound signals. Products in the electro-acoustic industry traditionally include two categories of electro-acoustic components and terminal electro-acoustic products. Electro-acoustic components can be divided into general electro-acoustic components and miniature electro-acoustic components. It can be divided into miniature acoustic and electrical transducers (miniature microphones) and miniature electroacoustic transducers (miniature receivers and miniature speakers). It mainly includes three categories – microphone (sound acquisition), audio IC (signal processing), speaker/receiver (sound playback). in:
1. A microphone is a key device that converts sound signals into electrical signals.
2. Speakers, commonly known as “horns”, are output devices that convert electrical signals into sound signals, and can realize functions such as ringtones, hands-free, and external playback.
3. The receiver, commonly known as “earpiece”, is also an output device. The principle is similar to that of the speaker, but the power is smaller, and it is more suitable for use close to the human ear.
4. Audio IC, mainly used to control audio signal, volume, sound quality, etc.
The upstream industries of the electro-acoustic industry include industrial design, software and algorithm development, hardware, structural parts, etc. The small and medium-sized enterprises in the midstream industry are mainly engaged in magnets, diaphragms, voice coils, miniature microphones, speakers, transmission based on labor cost advantages and geographical advantages. Production of microphones, receivers, etc., and provide basic electro-acoustic components to mid- and downstream enterprises. Large and medium-sized enterprises in the electro-acoustic industry have made breakthroughs in core technologies to “vertical development” downstream of the industrial chain, improving their own supporting R&D and production capabilities, and engaged in the research and development of electro-acoustic components and terminal electro-acoustic products such as headphones, microphones, digital audio-visual, combined audio, etc. , design and manufacture.
This industry chain, from upstream to downstream, is as follows:
Upstream – raw materials, mainly including wafers, injection molded parts, hardware components, die-cut parts, diaphragms and magnets, etc. Upstream companies are more complex, and most of them are not listed. Representative companies include Infineon.
Midstream – the representative companies of audio IC include Realtek, Actions Technology, Hengxuan Technology, etc.; while the manufacturers of micro microphones and micro speakers/receivers often overlap, and the representative companies mainly include Goertek, AAC, Meilu, Co., Ltd. up to the sound and so on.
Downstream – terminal applications, mainly used in smart phones, TWS headsets, notebook computers, automotive electronics and other devices that require sound. Representative companies mainly include Apple, Samsung, Huawei, Xiaomi, and Transsion.
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Post time: Jun-30-2022
