Question 1: What causes the sound distortion of the mobile phone headset? It is recommended to refer to the following:

1. Change other contacts to make a test call.

2. If it is a Bluetooth headset, please try to reconnect the phone and the Bluetooth headset.

If it is a wired headset, please try plugging it in again.

3. Try changing to other Bluetooth headsets/wired headsets.

4. If noise still occurs after replacing the headset, in order to eliminate problems with third-party software, please back up your data (contacts, text messages, photos, etc.) and try restoring to factory settings.

If the problem persists, it is recommended that you bring the machine, purchase invoice, and repair card to the local Samsung after-sales service center for testing.

Question 2: Can anyone explain in layman’s terms what the sound field of headphones means? What does it feel like? Don’t come if you have no experience! My personal understanding is that the sense of space is the same as when you don’t wear headphones. The sounds are far and near. At the same distance, instrumental music and vocals are divided into different levels. The sounds at each level are different. Different sounds. The angle between time and you is also different. Therefore, the sound field can also be viewed as a three-dimensional figure composed of three axes: x, y, and z. For something more abstract, try to imagine the feeling of sound in front, back, left, right, up, down, and depth. It doesn’t mean that the bigger the sound field, the better. Some professional monitoring headphones have a very small sound field, and they basically feel like they stick to your ears and hurt your face, but they are still professional. When listening to symphonic classical music and the like, it is better to have a larger sound field, otherwise all the music will be mixed together and you will not be able to listen to it. . .

Question 3: How to calculate headphone distortion? The output of the device cannot completely reproduce its input, resulting in waveform distortion or increase or decrease in signal components.

The deviation of a signal from the original signal or standard during transmission. In an ideal amplifier, the output waveform should be exactly the same as the input waveform except for amplification. However, in fact, the output waveform cannot be exactly the same as the input waveform. This phenomenon is called distortion.

Transient distortion is an important indicator of modern acoustics. It reflects the ability of the power amplifier circuit to keep track of transient transition signals, so it is also called transient response. This distortion causes the music to lack layering or transparency, and has two forms of expression:

A. Transient intermodulation distortion.

When a pulsed transient signal is input, the capacitance in the circuit prevents the output terminal from getting the appropriate output voltage immediately, and the negative feedback circuit cannot get a timely response. The amplifier is at this moment. In the open-loop state, the output is instantly overloaded and clipped. This clipping distortion is called transient intermodulation distortion. This distortion is more serious on stone machines.

Transient intermodulation distortion is a dynamic indicator of the power amplifier, which is mainly caused by the deep negative feedback inside the power amplifier. It is the main culprit that affects the sound quality of stone machines and causes "transistor sound" and "metal sound". The main methods to reduce this distortion are: 1. Select good components and adjust the operating point to maximize the open-loop gain and open-loop frequency response of the amplifier. 2. Strengthen the negative feedback of each amplification stage and cancel the negative feedback of the large loop.

B. Distortion caused by too low conversion rate.

As mentioned above, high-level input pulses cause the amplifier to clip and cause transient intermodulation distortion. Will N low-level input pulses cause distortion? This depends on the response time of the amplifier. Because the response time of the amplifier is too long, the changes in the amplifier output signal cannot keep up with the rapid changes in the input signal, which causes transient distortion. , called slew rate too low distortion. It reflects the response speed of the amplifier to the signal. This amplifier with small distortion has good sound quality resolution, layering and positioning.

AC interface distortion

AC interface distortion is caused by the back electromotive force of the speaker (the electric potential generated by cutting the magnetic lines of force when the speaker vibrates) feedback to the circuit. Improvement methods include: 1. Reduce the output impedance of the circuit. 2. Choose appropriate speakers to make the damping coefficient more reasonable. 3. Reduce the internal resistance of the power supply.

Question 4: How do you know the distortion rate of headphones? What can you use to check? This distortion is measured using acoustic instruments.

It is to use a sine wave sweep signal under the rated power of the headphones to test the harmonic distortion. For high-fidelity headphones, this is a must.

However, for headphones currently on the market, the distortion indicated may not be actual measurements. Under normal circumstances, headphone distortion is relatively small, and it is normal to have less than 1.

Question 5: How to judge the sound quality of headphones. First of all, the equipment to be tested should be good, with high sound reproduction and good quality in all aspects. The ideal test is on a desktop audiophile. Good headphones have very low distortion, sound reproduction is accurate, natural, clear, layered and three-dimensional, and the sound rises and falls cleanly. The sound quality of headphones is directly proportional to the price, and good headphones are never cheap.

Question 6: What are the characteristics of a good headset? It should have the following points:

1. Pure sound without any unpleasant "hiss" or " "Weng" and "coax" sounds.

2. It has a good sense of balance, the tone is never too bright or too dark, the energy of high, middle and low frequencies is evenly distributed, and the integration between frequency bands is natural and smooth, without any abruptness or burrs.

3. The high frequency extension is good, delicate and smooth.

4. The low-frequency dive is deep, clean and full, full of elasticity and strength, without any fat or slow feeling.

5. The mid-frequency distortion is minimal, transparent and warm, and the vocals are friendly and natural, thick and magnetic, without exaggeration or nasality.

6. Good resolution, rich details, and even small signals can be played back clearly.

7. Have good sound field portrayal ability, the sound field is wide, the positioning of instruments is accurate and stable, there is enough information in the sound field, and there is no hollow feeling.

8. There is no obvious dynamic compression, a good sense of speed, and no or very little distortion at high volumes.

Question 7: What is headphone sound distortion? Anything that doesn't match the original recording will be counted, whether it's due to equipment defects or intentional rendering.

Question 8: Why do I think all headphones are the same? As long as the hearing is normal, there is still a significant difference between ordinary headphones and high-end headphones. Good headphones generally have low distortion, wide frequency response, and high sensitivity. You will definitely feel amazing when listening to good headphones for the first time.

Question 9: Why is my computer distorted when listening to music through headphones? 5 points I often encounter this problem. It is not a computer problem. The computer is fine. It is a problem with the headphones. Some interfaces have higher requirements for headphones. This is a normal phenomenon. Try changing the headphones. I hope it will be adopted. Thank you. I don’t know. Please continue to ask.

Question 10: Why is the sound distorted when singing with headphones? - -|| When I saw this question, I thought of the man sitting next to me yesterday. He was really disgusting. He was wearing a headset and howling there... I really wanted to slap him. Damn it!!! It's really ugly... worse than the scream of a ghost...!! It's easy to get distortion when singing along with headphones. That's because human hearing comes from the outside world and enters the ear through the ear canal. Part of the sound is the sound that is felt through the "bone conduction" of the human head. After wearing headphones, the sound that is felt by the bone conduction is enhanced. In this environment, the sound you sing is If it cannot be fed back to the headphones and heard by you, you will not be able to judge whether the sound you sing is accurate, so it is easy to be distorted.