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ADXlossy compressed audio file

application/octet-stream

Safe

Magic Bytes

Offset: 0
03 00 00 00 41 50 50 52

ADX is a proprietary lossy compressed audio format developed and maintained by CRI Middleware for the interactive entertainment industry. This format is primarily used to store background music and voiceovers in video games, optimized for efficient streaming and seamless looping on hardware with limited resources. Although considered a legacy standard from the Sega Dreamcast and PlayStation 2 eras, the format remains purely an audio container and presents no inherent security risks.

Extension

.adx

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .adx files in Python

Python
def is_adx(file_path: str) -> bool:
    """Check if file is a valid ADX by magic bytes."""
    signature = bytes([0x03, 0x00, 0x00, 0x00, 0x41, 0x50, 0x50, 0x52])
    with open(file_path, "rb") as f:
        return f.read(8) == signature

How to validate .adx files in Node.js

Node.js
function isADX(buffer: Buffer): boolean {
  const signature = Buffer.from([0x03, 0x00, 0x00, 0x00, 0x41, 0x50, 0x50, 0x52]);
  return buffer.subarray(0, 8).equals(signature);
}

How to validate .adx files in Go

Go
func IsADX(data []byte) bool {
    signature := []byte{0x03, 0x00, 0x00, 0x00, 0x41, 0x50, 0x50, 0x52}
    if len(data) < 8 {
        return false
    }
    return bytes.Equal(data[:8], signature)
}

API Endpoint

GET /api/v1/adx
curl https://filesignature.org/api/v1/adx

Related Formats

Frequently Asked Questions

What is a .adx file?

A .adx file is a ADXlossy compressed audio file file. ADX is a proprietary lossy compressed audio format developed and maintained by CRI Middleware for the interactive entertainment industry. This format is primarily used to store background music and voiceovers in video games, optimized for efficient streaming and seamless looping on hardware with limited resources. Although considered a legacy standard from the Sega Dreamcast and PlayStation 2 eras, the format remains purely an audio container and presents no inherent security risks.

What are the magic bytes for .adx files?

The magic bytes for ADXlossy compressed audio file files are 03 00 00 00 41 50 50 52 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .adx file?

To validate a .adx file, read the first bytes of the file and compare them against the known magic bytes (03 00 00 00 41 50 50 52) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .adx files?

The primary MIME type for .adx files is application/octet-stream.

Is it safe to open .adx files?

ADXlossy compressed audio file (.adx) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.