Why can I always hear the noise of my monitor speakers? From the beginning of the speaker, the noise has been a thorny problem that has long plagued everyone. The following article can help solve the noise problem, help you find the equipment that is noisy, and eliminate it by some means. Noise defines many types of noise, and the causes are different and the performance varies. Therefore, it is necessary to classify the noise. The following is a classification of the noises commonly found in several audio devices, and a brief description of the causes and solutions.
There are many types of noise, and the causes are different and the performance varies. Therefore, it is necessary to classify the noise. The following is a classification of the noises commonly found in several audio devices, and a brief description of the causes and solutions.
1, white noise (White Noise)
White noise is a kind of random noise in the whole frequency domain. It sounds like an endless “beep†sound, similar to the sound when the TV does not signal the snow. Solution White noise is usually generated by a gain device or amplifier in the device. If the volume is adjusted too high, it is easy to produce obvious noise floor. At this time, you need to check the output volume of the sound card, software and speakers to ensure that no overload occurs in every link. PS: High-sensitivity microphones, such as condenser microphones, can pick up noise that is almost inaudible to the human ear in the room environment, such as air conditioning, outdoor noise, and wind noise. Do not ignore the effects of ambient noise when recording.
2, digital distortion
Digital distortion tends to make a harsh "click" sound that sounds like a sound in nature. In general, it will vary depending on the process used by the computer. For example, when using different software or effects, the digital distortion will change. Solution Digital distortion is usually caused by some problems with the sound card, or the monitor speakers are connected to the same socket on the computer. Make sure that the power of your monitor or other playback device (such as the monitor controller) is connected to a separate power outlet such as a computer. Or use a quality power adapter.
3, feedback whistling
The feedback is usually due to the microphone being too close to the speaker, and the microphone will pick up the sound of the speaker and become self-excited. At this point, there will be a harsh high-frequency whistling, and when some small bands perform tuning, there will often be whistling. Solution When you record, wear headphones instead of the monitor speakers, so that the microphone will not pick up the sound of the speaker. When the headphones are played or played without conditions, you can move away from the speakers and turn down the microphone gain.
4, humming noise
These sounds can usually be divided into the following two types: One is the random distribution of hum, the most likely cause is the software parameter setting problem. Increase the Buffer Size should be done. The second is a rhythmic buzz, such as a half-second squeak, which may be caused by damage to the sound card or the driver is not properly installed. Solution This type of noise is often caused by software or driver incompatibility of the sound card. For example, the Buffer Size is set too low, Bluetooth or wireless devices are connected to the system, or the compatibility of the software is poor. You can check the software compatibility of the sound card on the official website to see if your computer does not meet the lower requirements of the sound card. If this type of noise is heard in your speakers, you can try to unplug the speakers and listen to them to see where the noise comes from.
Noise Elimination Tips
1. Use a balance line. The balance line is more resistant to the environment and provides better fidelity when using longer cables. The balance line is a three-core cable, two of which are used to transmit signals and are wrapped by another shielded cable.
2. Speakers and computers use different power outlets. If the speaker and the computer and sound card use the same socket, it is sometimes easy to generate digital distortion noise.
3. Use a power adapter. A reliable power adapter not only eliminates some of the noise in the line, but also shields the high current pulses from the device.
4. Do not overload the amplifier. The volume of any device or software is too high, which will increase the noise floor and even be heard in the mix. Any audio device that can adjust the gain, when the knob is turned up to a certain level, will make the noise inside the device so large that it can be heard. Therefore, the output gain of the speakers and sound card should not be too high.
5. Don't overuse compression. Over-compression is also easy to make the bottom noise stand out. You can make the compression threshold higher, the compression ratio lower to make the noise less noticeable, and it will give your mix a larger dynamic range. PS: Mainly refers to recording audio files with good recording quality and large noise floor.
6. Exclude the method to find the equipment in question. If you can hear noise in the speakers, then remove one device and then one device to see which one is the noise. For example, you can pull the connection from the sound card and plug it into other playback devices to listen. If the noise is gone at this time, the problem is on the computer or sound card. Using the exclusion method makes it easier to find out where the problem is.
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