What are FM earphones
This kind of earphone is specially prepared for students, because the listening test will be conducted in the English test now, this kind of FM earphone is specially designed for the middle school entrance examination, It is designed for the college entrance examination or the CET 4 and 6 of the university, and some FM earphones are designed with double FM, which means that there are two channels, one for listening test, and the other for students to listen to music or music in their spare time. It is to relax by listening to other channels, listening to news and cross talk and the like.
Main Features and Uses of FM Headphones
1. Wireless FM Headphones, FM wireless headphones are the company’s target for high school entrance examinations, college entrance examinations, and English CET-4 and CET-6 exams. Headphones are earphones specially designed for listening exams.
2. Dual FM receivers, FM1 is a dedicated frequency band for listening exams, and FM2 is an FM radio frequency band. Students can listen to news, music and other radio programs in their spare time.
3. The internal circuit materials are exquisite, the production is fine, the sound quality is clear, the sound is loud, the sensitivity is high, and the selectivity is good. It is the best choice for foreign language listening test.
What’s the difference between FM headphones and regular headphones
1. FM earphones
FM earphones transmit audio signals by means of frequency modulation. The carrier of the FM wave changes on both sides of the carrier center frequency with the change of the audio modulation signal. Broadcast technology in which the frequency varies with the amplitude of the audio signal. Strong anti-interference ability, small distortion, high equipment utilization, but occupying frequency bandwidth, so it often works in very high frequency band.
2. Ordinary earphones
Ordinary earphones convert the electromagnetically recorded content of the magnetic tape into a weak audio signal after being picked up by the playback head, and then amplified to a certain degree. After the amplitude, it is output from the card holder to the power generator, and after the power is sufficiently amplified, a magnetic field is generated in the space by the load coil. After the user wears the headset, the internal receiving coil senses the electromagnetic field in the air to form a weak audio signal. After appropriate amplification, it is converted into sound energy by the speaker to emit sound.
How to use FM headphones
There are + and – buttons on the ear side, long press the “+” button to enter the automatic search mode, etc. The search stops automatically when the radio station is on. If the radio station you want is lower than the current channel, you need to press and hold the “-” key until the desired frequency point is found. If you need to fine-tune, you can click “+” or “-“. Make short-frequency adjustments.
How to connect the FM headset to the phone
The wired headset can be connected to the audio output of the phone. One important thing is that the interface matches. Wireless FM earphones cannot be wirelessly connected to mobile phones unless mobile phones with FM transmitter function appear in the future.
What should I do if the FM headphones have noises
There may be a problem with the interface wire or coil of the headphones, which will produce a current sound. The defective headset needs to be sent to the repair place for inspection and repair. It is also possible that the headphone jack is not plugged in properly, you can rotate the headphone plug to detect. Or there is a problem with the headset itself, it may be the current sound caused by the surrounding electromagnetic radiation. It is also possible that the performance of the headset itself is not good, and there is current sound.
What are the FM headset radio stations
Different provinces and cities have different FM channels, including emotional radio, traffic radio, etc. You can search in the automatic search mode Listen on your own.
