Speaker noise (bottom noise) from where, how to eliminate?

Definition of Noise

There are many types of noise, with different causes and manifestations.
Therefore, it is necessary to classify the noise. The following is the classification of the noise commonly seen in several audio equipment, as well as the simple description of its causes and solutions.

01 White Noise

White noise is a full-frequency random noise that sounds like a continuous “hiss,” similar to the sound of snowflakes on a TV when there is no signal.


White noise is usually produced by the gain device or amplifier in the device. If the volume is adjusted too high, it is easy to produce obvious bottom noise.
At this time need to check the sound card, software and speaker output volume, to ensure that each link is not overloaded.

PS: High-sensitivity microphones, such as condenser mics, can pick up noises that can hardly be heard by human ears in the room environment, such as air conditioning, outdoor noise, wind, etc.
Don’t neglect the influence of ambient noise when recording.

02 digital distortion

Digital distortion tends to produce a harsh “buzz” that doesn’t really sound like nature.
In general, it varies depending on the process the computer is using.
For example, digital distortion changes when different software or effectors are used.



Digital distortion is usually caused by some problem with the sound card, or by listening to the speaker connected to the same socket as the computer.
Make sure the power of your listening speaker or other playback device (such as a listening controller) is connected to a separate power outlet for your computer and other digital devices.
Or use a reliable power adapter.

03Respond to the roar

Feedback usually occurs when the microphone is too close to the speaker and the microphone picks up the sound of the speaker.
This produces a shrill, high-frequency noise, often heard when watching small bands perform tuning.


When recording, wear headphones instead of listening to the speaker, so that the microphone will not pick up the speaker sound excitation.
When the performance or performance does not have the condition to use the headset, can be farther away from the speaker, and adjust the microphone gain.

04 A crackling noise

These sounds can usually be divided into two categories:

One is the random distribution of crackles, most likely due to a software parameter setting problem.
Increasing the Buffer Size should do the trick.

The second is rhythmic crackling, such as a half-second crackle, which may be caused by damaged sound cards or improperly installed drives.



Such crackling noise is often caused by incompatible sound card software or drivers.
Such as setting the Buffer Size too low, having bluetooth or wireless access in the system, or poor software compatibility.
Can go up official website the relevant content that inquires the software compatibility of sound card, see oneself computer did not reach the minimum requirement that sound card needs.

If you have this kind of noise coming from your speaker, try unplugging the speaker into your headphones to see where the noise is coming from.

Post time: Dec-31-2020
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