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HALOWERK Podcast Multi-Track Mixer
x402
HALOWERK Podcast Multi-Track Mixer is a paid API for AI agents from medien.halowerk.com, paid per call via x402, $0.012/call, status unknown (last checked 2026-10-31).
Mixes 2–4 per-speaker audio tracks into a single polished podcast episode with noise gating, loudness normalization, and FFT noise reduction
Price / call$0.012
Success—
StatusUnknown
How this service works
Takes 2 to 4 audio tracks of the same conversation, one per speaker (remote recordings or a multitrack recorder), of up to 20 minutes, and returns one mixed episode. Every track gets a high-pass filter against rumble and hum, light FFT noise reduction, a noise gate that closes while that speaker is silent so that bleed and room noise of the others do not sit twice in the mix, and is brought to a common loudness so nobody is too quiet; then the tracks are summed and the mix is brought to the…
Output
A single mixed audio file (MP3, Opus, WAV, or FLAC) containing all speaker tracks summed together, each having been high-pass filtered to remove rumble, lightly de-noised via FFT, noise-gated to suppress bleed and silence, and individually gain-adjusted before the combined mix is mastered to the requested target loudness (LUFS).
Example use cases
Remote interview podcast episode
“I recorded a podcast interview with two guests remotely — I have three separate WAV files, one per person, each about 45 minutes. Can you mix them into one clean MP3 episode at -16 LUFS with the noise gate on to kill background noise when people aren't talking? The longest track is 45 minutes.”
In-person multitrack podcast master
“We recorded our weekly podcast on a multitrack recorder so I have four separate tracks, one per host. They're all about 30 minutes long. Please mix them into a single Opus file at -18 LUFS — enable the noise gate and make sure nobody is too quiet compared to the others.”
Solo host with co-host cleanup
“I have two audio files from our podcast: my track and my co-host's track. She recorded in a noisy room so there's a lot of bleed. Can you mix them into one MP3, use the noise gate to cut her room noise when she's silent, and bring both of us to the same loudness at -16 LUFS? The episode is about 22 minutes.”
Technical details
Endpoint
POSThttps://medien.halowerk.com/v1/podcast-mix?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you have 2–4 separate per-speaker audio tracks from a podcast recording (remote or multitrack) and need a single broadcast-ready episode with professional-grade noise gating, FFT noise reduction, high-pass filtering, and loudness normalization applied per track before mixing. Prefer it over generic audio converters or transcoders when the goal is a clean, normalized, bleed-free podcast mix rather than simple format conversion or transcription.
Side effects
- Too many tracks: more than 4 tracks submitted returns a validation error
- Duration exceeded: longest track exceeds 20 minutes returns an error
- Invalid audio: unreadable or unsupported audio format at provided URL returns a processing error
- Payload too large: base64-encoded content exceeds 6 MB per track
- Gain out of range: gain_db outside -12 to +12 dB returns a validation error
- Target LUFS out of range: value outside -30 to -10 returns a validation error
- URL unreachable: source URL returns a network/fetch error
- Insufficient tracks: fewer than 2 tracks submitted returns a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| gate | boolean | |
| tracks | array | |
| target_lufs | number | |
| output_format | string | |
| duration_minutes | integer | Length of the longest track in started minutes. |
Tags
x402
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