Audio is an external device of the computer. Most people like to play music when they play computer at home. It is also good to have music when cleaning. So what kind of computer audio is good? If the electronic market is so chaotic, it is still necessary to know more about it. Now the decoration home decoration network Xiaobian will briefly introduce the computer audio purchase knowledge.
Computer audio purchase knowledge
1. In addition to pure music amplifiers, AV amplifiers are more powerful amplifiers for home audio or home theater. However, since the amplifiers of all the speaker units are concentrated here, the performance in high, medium and low sound ranges will be limited, depending on what kind of sound you prefer. It is generally recommended that the maximum output power of the amplifier be 1.5 times the rated power of the speaker, and the multiple of the bass part should be higher.
2. Sensitivity refers to the sound pressure level measured one meter away from the front of the speaker. The unit of measurement is decibel (dB). The sensitivity of the speaker is independent of the sound quality and tone of the speaker. The higher the sensitivity, the higher the volume, the lower the power requirement for the amplifier, but the higher the distortion.
3, now the speaker is mostly inverted design, it has higher power bearing capacity and lower distortion than the closed speaker, the volume is sufficient, the sensitivity is high, and it can be used in most occasions. Because the sound waves behind the speaker are released from the phase-reversed holes, it is also more efficient than the closed box. If a speaker is installed in a suitable inverter box and the bass sound pressure is 3dB higher than that in a sealed box of the same volume, this is an important reason why the inverter box is widely popular.
4, when music enthusiasts choose computer audio, the requirements for audio are also higher, the sound quality of the first sound is better, can restore the fidelity of the song, but also has a certain artistic appeal. The second signal-to-noise ratio is also high, generally greater than 80 dB, and more preferably greater than 85 dB.
5. The impedance value marked by the speaker is actually a pure resistance value. In fact, the impedance of the speaker is not fixed during operation, and the rated impedance is only an intermediate value. When the frequency changes, the impedance will change accordingly. Generally, the impedance will decrease at low frequencies and the impedance will increase at high frequencies.
6. Take the BT-audio audience cinema as an example. The home audio can be divided into three parts: audio source, power amplifier and pronunciation unit. For the home, the sound source can choose a common disc player or a more professional laser singer.
The above is about the introduction of computer audio purchase, we can simply understand, if the audio quality requirements are not very high, the sound on the market is basically OK, everyone pay attention to the quality when buying. More exciting decoration materials knowledge, please pay attention to the decoration home decoration network material selection manual column!
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