{"success":true,"data":{"ext":"acd","name":"Sonic Foundry Acid Music File","description":"Sonic Foundry Acid Music File (ACD) is a project file format originally created by Sonic Foundry and later associated with Sony and MAGIX through the ACID software line. It stores loop-based music arrangements, tempo information, and editing data for use in digital audio production and multitrack composition. The format is a legacy project type, and files are generally safe to open, though compatibility depends on the software version used.","mime":[],"risk_level":"Safe","signatures":[{"hex":"72 69 66 66","offset":0,"sources":[{"name":"Gary Kessler","url":"https://www.garykessler.net/library/file_sigs_GCK_latest.html"}]}],"related":[],"usage":{"python":"def is_acd(file_path: str) -> bool:\n    \"\"\"Check if file is a valid ACD by magic bytes.\"\"\"\n    signature = bytes([0x72, 0x69, 0x66, 0x66])\n    with open(file_path, \"rb\") as f:\n        return f.read(4) == signature","node":"function isACD(buffer: Buffer): boolean {\n  const signature = Buffer.from([0x72, 0x69, 0x66, 0x66]);\n  return buffer.subarray(0, 4).equals(signature);\n}","go":"func IsACD(data []byte) bool {\n    signature := []byte{0x72, 0x69, 0x66, 0x66}\n    if len(data) < 4 {\n        return false\n    }\n    return bytes.Equal(data[:4], signature)\n}"},"category":"Audio"}}