The full name of the frequency response range is
Frequency Response Range
Also called frequency characteristic. The frequency response is defined as the range of allowable amplitudes
The range of frequencies that can be played back and how much the signal changes within that range is called the frequency response. The range that human hearing can reach is about 20Hz-20KHz, noise cancelling earbuds and earphones，and the current mature earphone technology has reached this requirement. The ratio of the maximum value to the minimum value of the output voltage amplitude in a given frequency range, expressed in dB as the ratio of no
. The frequency response of ordinary power amplifiers is about (+/-) l-3dB from 20Hz-20000Hz; the frequency response of high-quality power amplifiers is about +/-0.1dB from 20Hz-20kHz.
Sensitivity, also known as sound pressure level. In layman's terms, the sensitivity of the headphones is also reflected in
required input power.
The higher the input power and the lower the input power, the louder the sound output from a sound source of the same power. For portable devices such as Walkman, sensitivity is a very important indicator. Generally speaking, the sensitivity of Walkman headphones is higher than
Monitor Grade Headphones
High, around 110db, so for the Walkman, the larger the value, the better.
The lower the impedance, the easier the headset is to talk and drive. On desktop computers or power amplifiers, VCDs, DVD TVs and other machines with headphone jack output, it is generally more appropriate to use medium and high impedance headphones. If you use low-impedance headphones, be sure to turn down the volume first, then plug in the headphones, and then turn up the volume little by little to prevent the headphones from being burnt out by overloading the headphones or deforming the voice coil and causing the sound to break. Low-impedance headphones are generally easy to push, so portable, power-saving machines such as Walkmans and Mp3 machines should choose low-impedance headphones. At the same time, we should also pay attention to high sensitivity, which is more important for Walkman and Mp3. Of course, when headphones with higher impedance are paired with audio sources with high output power
sound effect better.