AAC — ADTS
The clip as raw AAC in an ADTS stream — the codec behind most streaming and mobile audio. For testing AAC decoders and remux into MP4.
Specifications
- Source
- 3 s A-major triad, 44.1 kHz stereo
- Codec
- AAC-LC
- Container
- ADTS
- Lossless
- false
What is a .aac file?
AAC (Advanced Audio Coding) is a lossy audio format that generally outperforms MP3 at the same bitrate, standardized as part of MPEG-2 and MPEG-4. Raw AAC streams use ADTS framing, while AAC is also commonly wrapped in M4A or MP4 containers. It is the default audio codec for Apple, YouTube, and streaming.
How to use this file
Use an example AAC file to test decoder support, ADTS frame parsing, and audio pipelines that must handle both raw streams and container-embedded AAC.
How to use this file for testing
“AAC — ADTS” is a deterministic Novus Examples fixture for Conversion testing, Audio analysis. The same content exported across many formats and linked as a group, so you can convert one and diff against the expected twin.
Documented properties for this file: AAC · 73,653 bytes. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
Media fixtures are short and synthetic by design. Prefer waveform or transcript ground truth in the same group when measuring ASR, trim, upscale, or sync tools; do not assume broadcast-quality masters.
Code examples
<audio controls preload="none" src="triad.aac"></audio>Related files
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Generated by generation/audio_codecs.py. Free for any use, no attribution required — license.