Free 5-minute sample · no card needed

Two mics, one clock,
perfectly mixed.

Recorded a conversation on two separate recorders? Their clocks drift, they started at different times, and one might be phase-flipped. BiBimBot aligns them to the sample — automatically, across the whole recording.

1Upload
2Account
3Free sample
4Whole recording

🍚 Drop in two microphone tracks

Upload both full recordings. You'll create a free account, then download the first 5 minutes aligned — free.

wav · flac · mp3 · m4a · aac · ogg · up to 1024 MB each
Your files are private to your account, auto-deleted after 30 days — or delete them yourself anytime.
How it works

From two clocks to one timeline.

No timecode, no clapboard, no manual nudging. BiBimBot listens to what the microphones share and rebuilds a single timeline.

1

Upload your tracks

Two mono files from any two recorders. Mic 1 is your reference; Mic 2 gets aligned onto it.

2

Create a free account

Make an account and download the first 5 minutes aligned — free, no card. Hear it lock into sync before you commit.

3

Process the whole thing

Subscribe for $10/mo and BiBimBot aligns your full multi-hour sessions — drift, dropouts, and all — up to 1 GB of audio a month.

Under the hood

Serious DSP, not a fixed nudge.

Most "sync" tools apply one constant offset and call it done — which drifts apart minutes later. BiBimBot models how the delay changes over time.

GCC-PHAT delay tracking

Phase-transform cross-correlation locks onto the shared room sound — robust to bleed, reverb, and noise — down to a fraction of a sample.

Clock-drift correction

Two consumer recorders can slip ~1.7 seconds over an hour. We estimate the sampling-rate offset and resample it away — continuously.

Dropout & jump resilient

If a recorder hiccups mid-session, BiBimBot follows the delay through the gap instead of throwing the rest of the file out of sync.

Polarity & phase match

Detects a flipped track and frequency-dependent phase differences, so summing the two mics reinforces instead of cancels.

$10/month

Process up to 5 GB of audio a month.

The first 5 minutes are always free. Subscribe to align full-length episodes and back-catalogs — any length — plus an API key to automate it. Billed monthly; cancel anytime and keep access through the end of your billing period.

Start — upload your tracks →

Questions? wtf@bibimbot.com