Just connect the microphone to this port. When the user plugs the MIC into the audio output interface, HDAudio can detect that the interface has a device connection, and can automatically detect the device type, define the interface as the MIC input interface, and change the original interface properties.
Microphone, scientific name, translated from English microphone, also known as microphone, microphone. Microphone is an energy conversion device that converts sound signals into electrical signals. There are moving coils, capacitors, electrets and emerging silicon microphones, as well as liquid microphones and laser microphones. Most microphones are electret condenser microphones, and their working principle is to use a polymer diaphragm with permanent charge isolation.
Common microphone types
1. According to the principle of acoustoelectric conversion, it can be divided into electric (moving coil type, aluminum strip type), capacitive (DC polarized type), piezoelectric (crystal type, ceramic type), electromagnetic type, carbon particle type, semiconductor type and so on.
2. According to the sound field force, it can be divided into pressure type, differential pressure type, combined type and linear type.
3. According to the transmission mode of electrical signals, it is divided into wired and wireless (wireless microphones are divided into three frequency bands, FM, VHF and UHF).
4. According to the purpose, it is divided into: measuring microphone, voice microphone, musical instrument microphone, recording microphone, etc.
5. According to directivity, it can be divided into heart-shaped, pointed heart-shaped, hypercentric, bidirectional (Figure 8) and omnidirectional (omnidirectional).