Record noise refers to the non-musical signals produced in the process of recording, copying and playing, such as noise, burr and noise. These noises will affect the sound quality of the record and make the music sound messy. Noise sources may be recording equipment, production equipment, tabletting process, stylus wear, etc. Noise reduction is a technology to remove the noise of records, which can significantly improve the clarity and quality of music.

Noise reduction technology is to analyze the noise in the singing film through software algorithm, and then eliminate these noises to make the music clearer. However, noise reduction will also have some negative effects. If the noise is not properly reduced, it may destroy the original musical expression and dynamic range of the record and make the music too dull. Therefore, when using noise reduction technology, it is necessary to weigh the relationship between clarity and sound quality in order to obtain the best effect.

Choosing an appropriate noise reduction scheme can significantly improve the quality of recorded music. Among them, software noise reduction is the most commonly used method. It can remove noise through software tools and maintain the original quality of music. In addition, hardware noise reduction is also a good choice. Hardware noise reducer can interfere with the noise in the recorded signal to maintain the original quality of music. However, both software noise reduction and hardware noise reduction need to be used under the correct settings to achieve the best results.