Headphone knowledge small popular science plug types
Generally speaking, our most common is the 3.5mm audio plug, which is almost the standard plug specification for most electronic products. The mobile phones and players we use in life are basically 3.5mm plugs. Of course, 3.5mm also belongs to the very old Wide range of headphone plugs. In addition, what other headphone plugs are there, and which audio products are they used for?
Let's explain TRS first:
TRS is a connector commonly used to connect audio equipment and transmit signals. Its three letters represent Tip (tip), Ring (ring) and Sleeve (sleeve). For example, our common 3.5mm headphone plug, also known as "3.5mm TRS". Because it is often used to plug in mobile phones, it is also called Phone Jack. TS, TRS and TRRS are collectively referred to as TRS, and can be referred to as TS (no ring, that is, the tip and the sleeve each provide one contact point), TRS (one ring, three contact points) according to the number of rings (R) of the specific plug/socket. ), TRRS (two rings, four touch points), etc.
3.5mm TRS: 3-stage, 3.5mm TRS is the most common headphone plug, from top to bottom, it is left channel, right channel and ground, compatible with most mobile phones and DAPs, and belongs to portable audio equipment. commonly used. 3.5mm TRRS: For headphones with in-line control, you will find that the plug is a 4-segment TRRS. In addition to the left channel, right channel, and ground, there is also a segment that can transmit radio microphone signals.
3.5mm TRRS: 4-segment plug, can transmit left channel, right channel, ground and radio microphone signals. Unlike 3.5mm TRS, it can not only make calls, but also control music playback by transmitting signals.
The audio interface can be divided into balanced output and unbalanced output. Generally, the specification of unbalanced output is 3.5mm, while the balanced output is generally found in high-end portable audio equipment. At present, it does not have a unified specification. have their own standards.
