Sound quality: The HIFI mentioned earlier determines the sound quality of the earphones with high, medium and low frequency balance. Let alone excellent, the balance is good, and then the resolution is good, but there is no perfect earphone, especially high-end earphones. Every field has it Sony’s noise reduction is very good, and the BOSE looks very good. For most wooden ear friends, the low price is also good. Otherwise, how can there be an "entry-level" argument, I will talk about it in detail later Features of each headset.
Noise reduction capability: Noise reduction is divided into active noise reduction and passive noise reduction. First, passive means physical noise reduction. Through the design of ear pads, the sound insulation material in the ear pads of the earphones tightly isolates external noises, and it feels a little tight. Sometimes because the noise is too loud, the volume is increased, not only loss of hearing, but also There will be discomfort over time. Active noise reduction: The frequency of noise reduction generated by the noise reduction chip inside the earphone through the circuit is opposite to the frequency of the external noise and cancels to achieve a noise reduction principle. Good earphones will produce the opposite frequency according to the different frequencies of the noise to maximize the progress Noise reduction, here it is stated that there is no earphone with 100% noise reduction.
Signal-to-noise ratio: a parameter, in decibels. Generally, the higher the signal-to-noise ratio, the better the earphones and the less noise.
Distortion: The smaller the distortion, the better. The simple understanding is the change of the timbre. Similar to the broken sound of human beings, the smaller the distortion, the smaller the change of the timbre. Of course, it is difficult for ordinary people to hear with wooden ears.
Transient response: a response speed of fast output after signal input. For example, when multiple musical instruments are played, the piano sound suddenly stops, and the violin is quickly connected, there is a response speed at this time, which is the meaning of transient response.
Sensitivity and impedance: the higher the sensitivity value, the smaller the impedance, the faster the music presentation speed, and the faster driving.
Comfortable appearance: If the appearance of the headset is higher, the BOSE is relatively high, and the second is that it is comfortable to wear, not heavy, and does not hold the head, and it will not be uncomfortable to wear for a long time.
