Show HN: Beatsync – perfect audio sync across multiple devices

Hi HN! I made Beatsync, an open-source browser-based audio player that syncs audio with millisecond-level accuracy across many devices.Try it live right now: https://www.beatsync.gg/The idea is that with no additional hardware, you can turn any group of devices into a full surround sound system. MacBook speakers are particularly good.Inspired by Network Time Protocol (NTP), I do clock synchronization over websockets and use the Web Audio API to keep audio latency under a few ms.You can also drag devices around a virtual grid to simulate spatial audio — it changes the volume of each device depending on its distance to a virtual listening source!I've been working on this project for the past couple of weeks. Would love to hear your thoughts and ideas! Comments URL: https://news.ycombinator.com/item?id=43835584 Points: 7 # Comments: 1

Avr 29, 2025 - 19:54

Show HN: Beatsync – perfect audio sync across multiple devices

Hi HN! I made Beatsync, an open-source browser-based audio player that syncs audio with millisecond-level accuracy across many devices.

Try it live right now: https://www.beatsync.gg/

The idea is that with no additional hardware, you can turn any group of devices into a full surround sound system. MacBook speakers are particularly good.

Inspired by Network Time Protocol (NTP), I do clock synchronization over websockets and use the Web Audio API to keep audio latency under a few ms.

You can also drag devices around a virtual grid to simulate spatial audio — it changes the volume of each device depending on its distance to a virtual listening source!

I've been working on this project for the past couple of weeks. Would love to hear your thoughts and ideas!

Comments URL: https://news.ycombinator.com/item?id=43835584

Points: 7

# Comments: 1

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