1. has a narrow frequency band and is designed for voice frequency. GN Netcom's headphones have a working bandwidth of 300-3000 Hz, where more than 93% of the voice energy is concentrated. Therefore, it has excellent fidelity to speech and strong suppression to other frequency bands.
2. Microphone adopts professional electret microphone, which works stably. After the ordinary microphone works for a period of time, the sensitivity decreases and the sound is distorted. If you use a professional telephone headset, this will not happen.
3. Light weight and high durability. Because users need to use headphones for a long time, professional flow headphones give consideration to comfort and high performance. GN Netcom's Profile headphones have a quality of only 23g. The quality of other headphones is also less than 60 grams.
4. Safety comes first. Everyone knows that using headphones for a long time will damage hearing. In order to reduce hearing loss, GNNECOM headphones have designed necessary protection circuits, and all GNNECOM headphones have undergone rigorous testing to ensure that they meet international standards *.
* After studying the sudden noise, UL Underwriter's Laboratories determined that its safety limit was 1 18 dB.
* United States Occupational Safety and Health Administration. The Health Association (OSHA) limits the noise intensity of long-term exposure to noise environment to 90dBA.
5. Headphones are light, unique wire design, soft earmuffs, ergonomic, and extreme consideration for ears make the three frequencies more balanced and the sound quality more vigorous.
In short, earphone is the integration of earphone and microphone, which is the abbreviation of microphone and the transliteration of English.