Mic static is background noise while recording with a mic. No calibration or toggling between the inputs can help, but audio static removal is able to make a clear sound. Mic static is a result of the interaction between a microphone and environment and it even doesn’t depend on the mic’s quality sometimes but such of its specs as impedance, pressure sensitivity, etc.
Why does Mic Static Appear?
For example, if making records close to a computer, the static will be substantial. Stay away from a strong electromagnetic source (industrial motors, high-power radio transmitters, etc.) as well as from wireless phone sets and mobile phones.
Another reason for losing sound clarity is a defective mic cable. In this case, it is recommended to open the connector and check all the wires and shield.
Sometimes, the simplest solution can solve the issue. To remove static from audio, it is enough to push gently the jack far enough into the plughole.
If everything is good with the cables, the software app for making records may be adjusted in the wrong way. Check the sound settings to verify the compatibility between the components.
However, there are some effective ways to decrease mic static in-house.
How to Reduce Background Noise on Mic by Yourself
No need to buy a new mic if you follow our tips on how to reduce mic static.
- All mics come with their own impedance. Be sure the mic has the impedance recommended for the recording equipment.
- Try a mic with diverse parameters to check the static. If it is the same, the recording device can cause the problem.
- Replace your mic or headset with mini jack for ones with the USB connection that can fit more tightly in the plughole. Besides, USB connections are earthed and don’t pick up static from the surroundings.
- When using a video camera for recording and noticing static, try to install a regular bulb instead of spare or neon one.
- If using a PC or a laptop during audio recording, consider the quality of its sound card. Note that the most of low-cost cards (under $250) can provoke interferences.
- Use cables with the earthed XLR connection to hook it up to the comp and minimize the static.
Alternative Ways to Remove Mic Static
There is one more interesting and simple secret on how to reduce background noise on mic. Record at 10 –20 seconds of “room tone” – the sounds produced by surrounding home appliances, ventilation, and others but not by the people (talking, breathing, movements, etc.) or even animals. The sensitive mic collects all those noises and uses them as a base for further removal.
One can also use special software (free or paid) to eliminate background noises. It is developed to accept a diversity of audio file types and has a set of tools to remove interferences effectively. Note that different editing software is required to handle noises while audio and video recording.