3.5mm interface refers to a coaxial audio plug with a diameter of 3.5mm, and our common mobile phone headphones with wires are 3.5mm interfaces. USB interface, is a universal serial bus interface, our mobile phone charger cable and charger plug is connected by USB interface.
1. 3.5mm interface
Generally speaking, a headset with a MIC (Microphone) has 4 sections, and a headset without a MIC has 3 sections. The 3.5mm 4-segment plug of the national standard version is numbered 1, 2, 3 and 4 sections from the front of the audio line, which are left channel\/right channel \/MIC\/ ground. The 3.5mm plug of the American standard version is numbered 1, 2, 3 and 4 sections from the front of the audio line, which are left channel\/right channel\/ground \/MIC respectively. Therefore, if the standard of the headset and the device is not the same, it cannot be universal.
2, USB interface
advantage
USB port can support more gaming headset features. USB can have built-in DAC decoder (Digital to analog converter). USB headsets usually add special software to the headset to enhance sound performance.
The USB port supports the configuration of an independent sound card. High-end USB interface headphones are equipped with a separate sound card, which is more powerful than the sound card on the motherboard (device). A 3.5mm interface does not support this function.
USB interface Because of the powerful communication function, you can support the headset configuration of a variety of functions, such as multi-function key, light, vibration and so on.
drawback
The USB port has a small application range. USB headsets can only be used on computers or professional devices, not on mobile devices.
In general, USB interface headphones are suitable for use on computers or professional devices, and 3.5mm headphones are suitable for use on mobile devices.
1. Different plugs
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1, USB port: is a new form of USB interface.
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2, 3.5mm interface: refers to the diameter of 3.5mm coaxial audio plug.
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Second, different structure
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1, USB port: there are 4 pairs of TX\/RX difference lines, 2 pairs of USBD \/D-, a pair of SBU, 2 CC, in addition to 4 VBUS and 4 ground lines.
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2, 3.5mm interface: from the end to the root is left channel, right channel, ground, of which the left channel is commonly used red wire leather, the right channel is commonly used white.
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Three, different characteristics
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1, USB port: it is symmetrical, so its insertion and removal and cable direction can be positive and negative.
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2, 3.5mm interface: is a connector commonly used to connect audio equipment to transmit audio signals, the headset is divided into three layers of stereo sound.