What is a USB Headset?
In-line headset refers to the headset that can control the access device on the headset line. For example, controlling the remote MP3 device's power on / off function, play and stop function, volume adjustment function, etc. These functions that control the remote device on the headset line belong to the wired headset.
In-line headset
- Chinese name
- In-line headset
- Foreign name
- Headphone with controller / speaker
- Definition
- Control the headset of the connected device on the headset line
- Classification
- In-line headset refers to the headset that can control the access device on the headset line. For example, controlling the remote MP3 device's power on / off function, play and stop function, volume adjustment function, etc. These functions that control the remote device on the headset line belong to the wired headset.
- There are two types of pulleys and buttons. Some wire-controlled headphones have special functions such as Chinese character display ...
- Regardless of the type of interface (audio interface, USB interface, etc.), the line-controlled headset is basically a four-wire connection. The "shared return line GND" is the shared return line for the left and right channels, microphone, and output of the headset. Certainly, it's just that the manufacturer has done some tricks on the online pole in order to monopolize the interests. For example, the plug has four electrodes from top to bottom. If the first and third electrode wires are reversed, the phenomenon is that a headset is silent and the remote control is invalid and the microphone is invalid. If the third and fourth electrode wires are reversed, the phenomenon is Both headphones are silent. When making changes, you just need to follow the schematic diagram and follow the wiring to the micro switch.
- Wire-control headset principle
- According to the schematic diagram, it is not difficult to determine the function of each electrode of the wire-controlled earphone plug: use an ohmmeter to measure, and one of the electrodes is not conductive with the other three electrodes, then this electrode is the control electrode; If the two electrodes show the maximum resistance value, then these two electrodes are the left and right channel lines of the headset, and the remaining electrodes are the common return line. The maximum value mentioned here is relative to the resistance value between any two electrodes of the remaining three electrodes, the coil resistance of the left and right channel headphones will differ by 0.1 ~ 0.2.