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Any tool/bms script to convert this custom xlsparam binary file to json cause of this headers: sometimes when i open them in notepad++, some few binary files have Japanese text xlsParam.zip

Hello, i'm here to ask if anyone can help me solve this .spd audio archive format? It's a format used by Honey ∞ Parade Games in games such as Senran Kagura: New Link and Dolphin Wave to store audio files (in the case of DW, it stores a bunch of .ogg files from what i have seen so far from digging the PC version's files). At first i check if my foobar2000 with the vgmstream component can extract the content but failed. I then tried to see if this format have been solved before but all i could find was another format with similar name for some GameCube games. Since i'm a complete noob at reverse engineering, i can only explain things in the header section: From what i have seen so far, every files starts with a bunch of headers like "HEAD", "SNHD", "SNIF" and "SNDT" with some bytes between each header. The amount of "SNHD" is different in each file, which led me to believe that the amount of "SNHD" headers is the amount of files contain inside the archive, and the bytes after each "SNHD" header is some soft of id labelling. If anyone can furthering research this format and share it here, thank you so much for that in advance. The sample included here is from Dolphin Wave (the PC version if anyone's asking) and stores a bunch of sound effects used in the game. Thank you so much in advance. samples.zip