Aud
1s Silence WAV
1s Silence WAV is a Waveform Audio File Format sample generated for file format testing. It can be used to test downloads, parsers, previews, and file type detection.
silence-1s.wavType Sample
86 KB DownloadAudio
WAV Waveform Audio File Format
Waveform Audio File Format is a audio format commonly identified by .wav. Use the listed signatures, MIME types, and structure notes to validate files beyond the extension.
Extensions .wav
MIME audio/wav, audio/x-wav
Magic numbers
Analyze your fileoffset 0 Waveform Audio File Format leading signature
52 49 46 46 RIFFStructure
- RIFF header
- WAVE form type
- fmt chunk
- data chunk
Caveats
- Do not trust the extension alone. Check the MIME type, the first bytes such as 52 49 46 46, and format-specific structure when possible.
- Container formats and damaged files can share the same opening bytes, so deeper validation may be required for production upload, preview, or conversion flows.
Detection example
SIGNATURE = bytes.fromhex("52494646")
OFFSET = 0
def is_wav(path: str) -> bool:
with open(path, "rb") as f:
f.seek(OFFSET)
head = f.read(len(SIGNATURE))
return head == SIGNATUREconst SIGNATURE = [0x52, 0x49, 0x46, 0x46];
const OFFSET = 0;
// bytes: a Uint8Array / Buffer holding the start of the file
export function isWav(bytes) {
return SIGNATURE.every((byte, i) => bytes[OFFSET + i] === byte);
}package fileid
import "bytes"
var iswavSignature = []byte{0x52, 0x49, 0x46, 0x46}
const iswavOffset = 0
func IsWav(b []byte) bool {
end := iswavOffset + len(iswavSignature)
if len(b) < end {
return false
}
return bytes.Equal(b[iswavOffset:end], iswavSignature)
}const SIGNATURE: &[u8] = &[0x52, 0x49, 0x46, 0x46];
const OFFSET: usize = 0;
fn is_wav(bytes: &[u8]) -> bool {
bytes.get(OFFSET..OFFSET + SIGNATURE.len()) == Some(SIGNATURE)
}<?php
$signature = "\x52\x49\x46\x46";
$offset = 0;
function is_wav(string $bytes): bool {
global $signature, $offset;
return substr($bytes, $offset, strlen($signature)) === $signature;
}Practical usage
Use cases
Waveform Audio File Format is used for playback, waveform processing, upload checks, duration handling, and bitrate validation. Short clips, silence, and ambient audio help expose player and conversion edge cases.
Common detection mistakes
- The .wav extension alone does not prove the file contents. Upload and conversion flows should combine extension, MIME type, leading bytes, and format-specific structure checks.
- Waveform Audio File Format can start with signatures such as 52 49 46 46, but related containers and damaged files may require additional validation.
Security notes
Media files can still stress decoders through corrupt metadata, extreme dimensions, long durations, or unusual chunks. Read size, dimensions, and duration before processing.
Using samples
11 samples help test duration handling, playback startup, metadata reads, and download behavior.
Sample files
11 / 11 filesAud
Lake Waves WAV 0.25s
Lake Waves WAV 0.25s is a Waveform Audio File Format sample based on Wikimedia Commons, 0.25s. It can be used to test downloads, parsers, previews, and file type detection.
01-lake-waves.wavDuration 0.25s
43 KB SHA-256
e3db27b5f78e5cfe841ec076fac78d32b7152e1dfe645b341be7707415b5ddf3Aud
Lake Waves WAV 0.5s
Lake Waves WAV 0.5s is a Waveform Audio File Format sample based on Wikimedia Commons, 0.5s. It can be used to test downloads, parsers, previews, and file type detection.
02-lake-waves.wavDuration 0.5s
84 KB SHA-256
f0f0c576ff8e5de3e7c92521333838570d005963278faf986853ea8030f74f9fAud
Lake Waves WAV 1s
Lake Waves WAV 1s is a Waveform Audio File Format sample based on Wikimedia Commons, 1s. It can be used to test downloads, parsers, previews, and file type detection.
03-lake-waves.wavDuration 1s
172 KB SHA-256
ee2bccd91cfb9a1d490a4ce39672e79ba5559d716ab6f2f8311fa01d1e4af13fAud
Lake Waves WAV 1.5s
Lake Waves WAV 1.5s is a Waveform Audio File Format sample based on Wikimedia Commons, 1.5s. It can be used to test downloads, parsers, previews, and file type detection.
04-lake-waves.wavDuration 1.5s
258 KB SHA-256
afea543ba345a6d597f4e1a6902fd295da40cc664b530d96559399d8fc8ecd1bAud
Lake Waves WAV 2s
Lake Waves WAV 2s is a Waveform Audio File Format sample based on Wikimedia Commons, 2s. It can be used to test downloads, parsers, previews, and file type detection.
05-lake-waves.wavDuration 2s
345 KB SHA-256
e52d7191fb7249eecf97a1da6c46f52c6211d5a726c55752ee9202713d7950a5Aud
Lake Waves WAV 3s
Lake Waves WAV 3s is a Waveform Audio File Format sample based on Wikimedia Commons, 3s. It can be used to test downloads, parsers, previews, and file type detection.
06-lake-waves.wavDuration 3s
517 KB SHA-256
d142d896d3b6e0770131aad952142bf3df79da3ce52a6eacbe6b559c65a88660Aud
Lake Waves WAV 4s
Lake Waves WAV 4s is a Waveform Audio File Format sample based on Wikimedia Commons, 4s. It can be used to test downloads, parsers, previews, and file type detection.
07-lake-waves.wavDuration 4s
689 KB SHA-256
ac2b914c0e5a24fe51bdd3eef57e5ccc2ca70292a6bc7f651d1ae95d7deafaf2Aud
Lake Waves WAV 6s
Lake Waves WAV 6s is a Waveform Audio File Format sample based on Wikimedia Commons, 6s. It can be used to test downloads, parsers, previews, and file type detection.
08-lake-waves.wavDuration 6s
1.01 MB SHA-256
0c89fc574fc778f9459f288acb7b19efb684a17af9ae65aadf94ede31b00883bAud
Lake Waves WAV 8s
Lake Waves WAV 8s is a Waveform Audio File Format sample based on Wikimedia Commons, 8s. It can be used to test downloads, parsers, previews, and file type detection.
09-lake-waves.wavDuration 8s
1.34 MB SHA-256
1032ad0b84d973270c3ad472cbdc990217f6c31718a8c8c81f430dcc377c52d8Aud
NASA TV Audio WAV
NASA TV Audio WAV is a Waveform Audio File Format sample based on NASA Image and Video Library, 2s. It can be used to test downloads, parsers, previews, and file type detection.
nasa-tv-audio.wavDuration 2s
345 KB SHA-256
0140391d3296e40a0f5770ae2a51fe675e71aad7a2dd45421ac9edb1a6e5e03cFrequently asked questions
What is the magic number (file signature) of Waveform Audio File Format?
Waveform Audio File Format files begin with the byte signature 52 49 46 46 ("RIFF"). Detect the format by reading these leading bytes rather than trusting the file extension alone.
What is the MIME type of Waveform Audio File Format?
The MIME type for Waveform Audio File Format is audio/wav, audio/x-wav.
What file extension does Waveform Audio File Format use?
Waveform Audio File Format files use the .wav extension. The extension is a convention only and does not guarantee the file contents, so combine it with signature and structure checks.