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New in 6.61 · 50 seconds · the explainer

Speech, on every phone: one phone is the microphone, every other phone a speaker.

SynkEngine plays the same song on every phone in the room, in sync. New: tap Speech, and your phone becomes the microphone while every other phone in the party becomes a speaker. Your voice on all of them, at the same instant, over the Wi-Fi you already share. Here is how, in 50 seconds.

Alpha launch: 11/11 · 11:11 · Official launch: 12/12 · 12:12

What it does

Where it matters

A crowded hall under bunting and light beams: an announcer on a small stage with the phone as the microphone, and in the crowd the pockets of the people on SynkEngine glowing together
A crowded hall · one announcement, every pocket
A conference: a speaker at the lectern with the phone as the microphone, the audience's phones playing the talk
The conference · heard from every seat
A street at night by a venue's marquee: a busker with a guitar, the phone on a box in front as the microphone, the crowd around with the phones in their pockets glowing together
The street · a performance, the phones in their pockets

Key moments

Transcript

  1. 0:00Here's what's new in SynkEngine: Speech, on every phone.
  2. 0:04When your phones are in sync, tap Speech, and your phone becomes the microphone.
  3. 0:08Every other phone becomes your speaker: your voice, on all of them, at the same instant.
  4. 0:13A Bluetooth speaker, paired to a phone in the party, carries your voice too.
  5. 0:18No sound system. No cables. No expensive device, and no account. Just the phones already in the room, on the Wi-Fi you share.
  6. 0:27An announcement, across a crowded hall.
  7. 0:30A talk at a conference.
  8. 0:32A wedding speech.
  9. 0:33Or a performance in the street: the phones in their pockets are the speakers.
  10. 0:38Spread your voice across the room. Your imagination is the limit.
  11. 0:42SynkEngine. Alpha launch: eleven eleven.

Questions

What is the Speech feature?

In a SynkEngine party, tap Speech: your phone becomes the microphone and every other phone in the party plays your voice, at the same instant. The music pauses for the speech and comes back at its place afterwards.

Does it work over Bluetooth?

The voice travels over the Wi-Fi (or the host's hotspot) the party already shares; that is what makes the phones a party at all. A Bluetooth speaker paired to a phone in the party carries the voice too, and a phone on Bluetooth earbuds plays it in the earbuds.

Is there a delay?

A short one, the same for everyone: the party waits for its slowest output so that every phone speaks at the same instant. In our 31 October test the voice reached the room about a quarter of a second after it was spoken with phones only, and about 0.4 s with a Bluetooth speaker in the party. It is a voice channel, built for announcements, speeches and singing, not a hi-fi feed.

Can anyone speak?

The party's master speaks. Anyone else can ask for the microphone, and the master says yes; the countdown then runs on every phone and the mic is theirs.

How many phones can listen?

Every phone in the party, on the same Wi-Fi: a room, a terrace, a hall, a street corner. Our tests ran three phones and a laptop; the design carries dozens. In a crowd, the people on SynkEngine carry the voice for the people around them.

Does it record my voice?

No. Your voice is sent live over the local Wi-Fi only, to the devices in your party, and played; it is never stored or uploaded. Your phone asks for microphone permission the first time.

Which versions have it?

Android 6.61.2 and later (the build on Google Play's test is 6.61.6); a Windows 6.62 laptop can host the party and plays the speech like every other device. iPhone is coming.

When can I get it?

The alpha opens on 11/11 at 11:11 and the official launch is 12/12 at 12:12 (Mauritius, GMT+4). Request the app on synkengine.com; SynkEngine is on Android and Windows now, and iPhone is coming.

The poster

Poster: Speech, on every phone. One phone is the microphone, every other phone is a speaker; announcements, conferences, weddings, live music, public events, parties. Spread your voice across the room.

The poster is on our channels in 9:16, 4:5 and 1:1; the vertical cut of the film is on TikTok, Reels and Shorts.

TikTok Instagram YouTube Facebook X Threads LinkedIn GitHub All official links

Request the app: Android and Windows now, iPhone coming. Alpha 11/11 at 11:11.

Get the app

What the film says is what the app does in 6.61: the Speech button, the countdown on every phone, one microphone and every other phone a speaker, the voice over the party's Wi-Fi, a Bluetooth speaker carrying it, the music back at its place. The places are drawings; in the hall and the street only the people with SynkEngine carry the voice, and the phones in their pockets do. The voice channel is built for speech and singing, and the party waits for its slowest output so that every phone speaks at once. More on how it's built: the geek corner.

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