Latency

Reading your latency bubble

6 min read · Beginner
The gist in 10 seconds
  • Under each musician on the console, a button: bars (the health of the link) and a figure (“21+ms”).
  • Hover it, or tap it: the bubble opens. “At least 21 ms” is what Jamodio measures, from the other person's gesture to your ear.
  • It breaks the figure down: Network, Buffer, Audio. And, set apart, the hardware not counted.
  • It concludes in plain words (“Stable link”, “Tony's network is irregular”, “Your computer is overloaded”) and says, if there is something to do, what and who.

Step 1 — Find the button

1
Look at the bottom of a musician's strip
Under the M / S / R buttons, a small button Link button: four bars and “31+ms”: four bars and a figure. The bars are the health of the link with that musician. The figure is how long their playing takes to reach your headphones, at least.
2
Hover it, or tap it
The bubble opens. It stays open while you hover it; on a touch screen, tap next to it to close it.
3
Your own strip has the same button
It talks about what you send to the others: “You → the others”. More on that below.
Lucas's strip in the mixing console, with the link button at the bottom: four bars and 31+ms
A musician's strip — the link button, at the bottom

Step 2 — Read the figure: “at least”

The bubble: Tony → you, at least 21 ms, as if Tony were playing 7 metres away from you. Chain computer, network, server, network, computer, all fine. Stable link, nothing to do. Network 6.8 ms, Buffer 7 ms, Audio 7.6 ms. Hardware not counted: Tony's sound card 2.6, your sound card 17.4.
The bubble, stable link — what Jamodio measures, and what it does not count

The bubble starts with the direction (“Tony → you”) and the figure: at least 21 ms. “At least”, because Jamodio only adds up what it measures. What the drivers declare without proof is shown separately, uncounted (see below).

Right under it, an equivalent in metres: “as if Tony were playing 7 metres away from you, or more”. Sound travels about 34 cm per millisecond in the air. On a stage, a bass player 7 metres from the drummer hears them with the same delay. It is a landmark, not a grade.

Step 3 — Follow the chain

Between the two names, five stages: the other person's computer, their network, the server, your network, your computer. Each stage carries a tick (“fine”) or an alert sign (“problem”). Under each network, that person's connection type: Ethernet, Wi-Fi, mobile network. It is not an alert, it is information: it explains a buffer that moves.

Step 4 — Read the verdict, and who acts

Under the chain, the bars and a sentence. When all is well: “Stable link — Nothing to do”. When something is off, the bubble names the stage, and says whether it is yours to fix or theirs.

The bubble with the verdict “Tony's network is irregular”: their sound reaches you in bursts and drops out, your buffer is already at its maximum, nothing to do on your side
The other person's network is irregular — nothing to do on your side
The bubble with the verdict “Your computer is overloaded”: close heavy applications
Your computer is overloaded — this one is fixed at your end
What the bubble saysWhat it meansWho acts
Stable linkSound arrives regularly. Nothing to do.Nobody
Tony's network is irregularTheir sound reaches you in bursts and drops out: your buffer is already at its maximum.Tony (an Ethernet cable, most of the time)
Your network is irregularEverything you receive arrives in bursts, not only Tony.You: Ethernet rather than Wi-Fi
Your network is losing packetsPieces of sound never arrive. If you are on Wi-Fi, the bubble says so: a cable usually fixes it.You
Your computer is overloadedYour computer cannot keep up: memory full or processor busy.You: close heavy applications, lighten your plugins
Tony's computer is overloadedTheir sound reaches you chopped up, and it is not the network.Tony

Under the verdict, a line of evidence when there is one: “jitter ≈ 12 ms”, “3 dropouts/min”, “2% lost”, “memory saturated”. That is the measurement that triggered the verdict.

Step 5 — The three detail lines

Step 6 — “Hardware not counted” and “Avoidable”

Under a rule, the bubble lists what the drivers announce: your sound card, theirs, a built-in microphone, a plugin. These values are declared, not verified, and real hardware may add much more. So they are not counted in the figure. This is where you see, for instance, that a built-in sound card declares 17 ms where an external audio interface declares 2 or 3.

On your own bubble, an Avoidable line can appear: “12 ms come from your plugin (latency it declares): bypass removes them”, or “180 ms come from your Bluetooth output: a wired output removes them”. There, you know exactly what to unplug. See Wired headphones.

Step 7 — Your own bubble: “You → the others”

On your strip, the bubble talks about what you send. The figure is that of the slowest link among your musicians (“as if you were playing 8 metres away from Tony”), the chain reads the other way round, and at the bottom, one line per musician: “You → Tony, at least 22 ms”. Last line: Your headphone monitoring, what you hear of yourself.

Two verdicts belong to this bubble only: “Your sending is losing packets” (the others hear you chopped up) and “Your sending is irregular” (your sound leaves in bursts). In both cases, it is fixed at your end: the cable first.

Why never 0 ms?
Because sound takes time to travel, even in a room: 3 metres away, it arrives 9 ms later. The bubble does not tell you whether you “can” play. It tells you how much, where it comes from, and whether it is stable. The playing is up to you.
If it does not work
  • “measuring…” instead of the figure: every stage has to be measured. A few seconds after a musician arrives, that is normal. If it lasts, the bubble says what is missing (“network being measured”, “buffer being measured”).
  • “no sound” and “No sound from Tony for 8 s”: no packet arrives from them any more. Sound resumes on its own as soon as it comes back. Otherwise, ask them to leave and come back.
  • “not sending” on your strip: your sound is not leaving. Check your input in Audio settings, and that your LIVE button is not cut.
  • The figure keeps moving: look at the Buffer line and the connection type under each network. Wi-Fi, almost every time. Switch to Ethernet.

Still stuck? Write to support@jamodio.com with a screenshot of the bubble: we reply within 24 hours.