Audio File Requirements
Submitting high-quality audio files ensures your music sounds great on every streaming platform. Here are the requirements and best practices.
Accepted Formats
For your standard stereo release, InterSpace accepts the following audio file formats:
- WAV (recommended) - uncompressed, best quality for delivery
- FLAC - lossless compression, also excellent for delivery
- MP3 - accepted (320 kbps), automatically converted to a 24-bit WAV on upload; use WAV or FLAC where possible for the highest quality
Dolby Atmos (spatial audio) is delivered separately as a paid add-on, using an ADM BWF (.wav) or .atmos master. See How to Deliver Your Music in Dolby Atmos.
Recommended Specifications
- Sample Rate: 44.1 kHz (CD quality) — the industry standard
- Bit Depth: 16-bit minimum, 24-bit preferred
- Channels: Stereo (2-channel). Mono is acceptable for spoken word
- Loudness: Master to approximately -14 LUFS integrated for streaming. Avoid over-normalising.
Common Audio Issues That Cause Rejection
- Clipping/Distortion: Audio that peaks above 0 dBFS will be rejected
- Silence: Tracks with more than 10 seconds of silence at the start or end
- Low bitrate WAV: Files below 320 kbps are not accepted
- Corrupt files: Files that cannot be decoded or played back
- Mismatched file: Uploading a different song than the one named in the metadata
How to Check Your Audio
Before uploading, use free tools to verify your audio:
- Audacity (free) — check levels, clipping, and duration
- LUFS Meter (free) — check integrated loudness for streaming compliance
- MediaInfo (free) — view exact format, bit depth, and sample rate metadata