flattorolling

Flattorolling is a technique used in the production of vinyl records, particularly in the mastering process. It involves flattening the dynamic range of a stereo audio signal by reducing the difference between the loudest and quietest parts of the recording. This method is often employed to ensure consistent playback volume across different tracks, which can be particularly useful for DJs mixing records or for creating albums where uniform loudness is desired.

The process typically begins with a stereo audio file, which is then split into two mono channels. These channels are then processed separately to reduce their dynamic range. One common approach is to apply compression or limiting to each channel individually, followed by a process called "mid/side processing." Mid/side processing separates the audio into mid (center) and side (wider stereo field) components, allowing for targeted compression or equalization. The side components are often compressed more aggressively to control the stereo width, while the mid components are treated more gently to preserve clarity.

Flattorolling can also involve the use of specialized software tools designed for vinyl mastering, such as the "Flattoroll" plugin or similar algorithms. These tools automate much of the process, allowing for quick adjustments to achieve a consistent loudness level. The goal is to create a master that plays back at a consistent volume, reducing the risk of sudden loud or quiet sections during playback.

While flattorolling can improve the listening experience for DJs and ensure uniformity across an album, it is important to note that excessive flattening can lead to a loss of dynamic contrast and natural sound. As a result, it is often used judiciously to balance consistency with audio quality. The technique remains a popular choice in vinyl production due to its effectiveness in addressing the unique challenges of analog playback.