In PES 2021, the game's audio—including background music (BGM), stadium chants, and menu sound effects—is often locked within these archived formats. The Eternity Audio Tool acts as an editor that allows modders to: Open and Extract : View the internal structure of
The primary practical application of the Eternity Audio Tool lies in its synergy with , the external server that forms the backbone of advanced PES modding. While Sider can inject custom music and banners, it is the Eternity Tool that enables the deep integration of commentary packs and team-specific chant loops . For example, a modder can use the tool to replace a default goal celebration audio cue with a specific broadcaster’s iconic call, or sync a unique drum beat to a South American stadium’s entrance. The tool allows for the layering of sound, creating a dynamic audio ecosystem where the volume and type of crowd noise react not just to a goal, but to the specific identity of the team that scored. This transforms PES 2021 from a simulation of sport into a documentary of it. eternity audio tool pes 2021
: Custom audio must be pre-formatted (often using software like In PES 2021, the game's audio—including background music
The tool is built to handle the complex audio structures used in Japanese-developed titles like PES. For example, a modder can use the tool
: While popular for PES 2021, it is used across various titles to swap background music (BGM), crowd chants, and sound effects.
Some versions or workflows require the use of supplementary tools (like HCA.exe ) to decrypt encrypted game files before the Eternity Audio Tool can modify them. Common Use Cases in PES 2021
PES 2021 uses audio middleware. All sounds are stored in .acb (Audio Cue Bank) and .awb (Audio Wave Bank) files. The former holds metadata (pointers, loop points, volume); the latter holds compressed audio in .hca format.

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