The most discussed interfaces for high-end audio and video equipment are optical fiber interfaces and HDMI interfaces. Although they are both commonly used interfaces, what is the difference between them?
1. What is an HDMI cable?
HDMI is a high-definition video and audio simultaneous output interface. It is the mainstream audio and video transmission interface. The advantages are also obvious. It can output video and audio at the same time, but the maximum transmission speed is only 4.5G/S, which is slower than optical fiber. many.
2. What is an optical fiber audio cable?
Optical fiber, also known as optical fiber, its conductor material is quartz glass, which is a kind of conduction medium, and the transmission principle is “total reflection of light”.
Optical fiber cables are suitable for transmitting digital audio signals. The material of quartz glass optical fiber conductors is different from that of traditional copper conductors. Optical cables can transmit high-quality sound and images, and the sound quality of optical fiber transmission is very high. Digital signals can be transmitted through a digital decoder. 5.1 sound The sound effect distribution of the channel realizes the surround sound effect, and the audio equipment that requires extremely high signal fidelity will use the optical fiber cable. However, due to the reflection principle of light in channel transmission, it will cause a certain degree of inherent attenuation.
As a new transmission technology, optical fiber has better transmission performance than traditional 3.5mm and red and white analog signals, improves the signal-to-noise ratio, and can ensure high-quality audio signal transmission. Not only that, the optical fiber interface also supports 5.1-channel transmission. Only one HDMI cable can be connected with 5.1 audio equipment, output high-quality sound quality, easy to use, simple wiring. Now become the mainstream home or office network conductor.
3. The difference between HDMI cable and optical fiber audio cable
The biggest difference between HDMI cable and optical audio cable is the difference in audio compatibility and transmission speed.
HDM cables can transmit high-quality audio signals including Blu-ray audio, Dolby TrueHD and DTS HD Master Audio audio encoding; optical audio cables have fast transmission speeds, but do not support high-quality audio signals including Dolby TrueHD or DTS HD Master Audio Output.
HDMI can also directly transmit video signals, which can simplify the line system structure and have stronger functionality. If the multimedia equipment in the user’s home is a few years old and simply wants to output the normal format sound signal to the TV, then disabling the optical audio cable will suffice.
Since HDMI supports so many high quality audio signals, can I convert optical cable to hdmi?
BONESTEC has been focusing on high-definition optical fiber cables for many years, and now a variety of optical fiber HDMI cables that combine optical fibers and HDMI have been developed. By using BONES’ unique AOC+™ technology, the cable has HDMI to fiber optic cable or fiber optic cable to HDMI converter at the connector， 8K HDMI optical fiber AOC cables can be used between input signals and optical signals. It can be converted between the two to achieve the best high-bandwidth data transmission, and the maximum transmission length is 70 meters (30 meters support eARC). Therefore, it is quickly recognized by the market.