What Is an Optical Sound Card?

External sound card, also called USB sound card. A built-in sound card that is different from the motherboard integration or connected to the motherboard through PCI, ISA, PCI-E and other interfaces.

External sound card

External sound card, also called

Like the built-in sound card of the PCI interface, the external sound card also has the difference between a soft sound card and a hard sound card.

In the ISA era, the sound card has evolved from a simple 8-channel mono sounding device to a 2-channel device that can satisfy music appreciation and elementary creation. The ISA bus only supports up to 16-bit devices, and its data transmission rate is about 8Mpbs, bandwidth not enough.

In the PCI era, the bandwidth has been greatly improved, and the maximum data transmission rate is 133Mpbs. At the same time, it has benefited from the great leap in chip technology of the same era, and the signal processing capability of the sound card has been greatly enhanced. During this period, relatively sound sound processing technology and the computing power of the sound card chip have been developed Get unprecedented promotion.

In the era of PCI-E (PCI Express), the bandwidth has been greatly improved again. Even when the transmission mode is x1, its unidirectional transmission bandwidth can reach 250Mpbs. Some of these PCI-E sound cards are implemented through bridge chips. It's just a PCI sound card inserted in the PCI-E slot.

The USB bus supports hot-swap, easy-to-use, and manufacturing cost advantages. The transmission of audio has broken through technical barriers, making a variety of USB independent sound cards begin to gain popularity. The sound card is subdivided, such as the professional recording sound recording sound card that focuses on sound quality, and the K song sound card that focuses on sound experience. The more famous brands of this kind of products are Lenovo and Kesisi.

The popularity of smartphones, the acceleration of broadband, increased WIFI coverage, and the Internet market shifted to mobile terminals. The anchor and webcast markets have also emerged. Beauty and beauty have become the rigid needs of the anchors in front of the camera. There is also a large demand for recording songs, K songs and cover songs. The original K song sound card on the USB side has another variant. In addition to live broadcasts, the demand for equipment for online K song and mobile K song has also increased.

Like the mobile phone K song app singing it also launched its own microphone. In addition, more top-notch products, such as the sensibly violent K song headset and Lenovo UM10C sound K song microphone, these devices have batteries and a built-in DSP processor, which completely saves precious mobile phone power and CPU usage. It is rumored that Apple's mobile phone will cancel the 3.5mm mobile phone audio interface, so as to avoid audio quality damage when the audio is going up and down. By then, it is expected that more similar products will appear on the market and the main position of the sound card will be transferred again. ^[1]