The difference between audio and clock latency

Audio latency is the time delay between an audio signal entering a system and the same signal coming back out of the system. It’s usually measured in milliseconds (ms) and is often caused by analog-to-digital conversion (and vice-versa) in audio interfaces, as well as digital processing in software. 

Clock latency (in music-gear sync contexts) is the time delay between a timing reference (like MIDI Clock, DIN Sync, analog clock pulses, or a DAW sync signal) being generated and a device actually responding to it (starting, advancing steps, changing tempo, or aligning phase). It’s also measured in ms, but the bigger issue is often not just the delay - it’s the consistency of that delay.

Audio latency and clock latency get mixed up a lot because both show up as “things feel late.” But they’re different problems, measured differently, and fixed with different tools. 

When you’re syncing a DAW with drum machines, sequencers, synths, or modular gear, and something feels off, understanding the distinction helps you figure out what exactly the issue is.

 

How audio latency affects you

Audio latency is most obvious when you, for example:

• Play a MIDI keyboard into a software instrument and the sound feels “behind” your fingers
• Monitor vocals/guitar through the DAW and it feels delayed
• Record audio and notice it lands late on the grid

Common sources could be:

• DAW Buffer size (bigger buffer = more latency)
• A/D and D/A conversion time in the audio interface
• Plugin processing (especially lookahead limiters, linear-phase EQ, oversampling)
• Driver and OS audio pipeline

In other words: audio latency is about the audio path - how long it takes sound to travel through your system.

How clock latency affects you

Clock latency shows up when, for example:

• Your drum machine starts a bit late after you press play in the DAW
• A sequencer’s steps feel consistently behind the beat
• Two devices are “locked” tempo-wise but the groove feels offset

Clock latency can come from:

• Transport and scheduling in the DAW/OS (timing messages aren’t always sent at perfectly even intervals)
• MIDI interface and USB stack delays
• Device input processing (how the receiving gear parses and reacts to clock/start/stop)

MIDI timing can be affected by system timing and synchronization choices inside sequencers, which is why “timing problems” can appear even when audio is fine (source: Sound on Sound)

 

The key difference: delay vs timing stability

Simply put: 

• Audio latency is primarily about how late the sound is
• Clock latency is about how late the timing information arrives and how consistently it arrives

When recording a MIDI machine like a sequencer, a constant delay is often manageable: you can compensate for it (manually or automatically). The bigger headache is unstable latency as well as clock jitter - small variations in timing from one clock pulse to the next. Jitter can make grooves feel unstable even when average latency is low.

Are clock latency and jitter the same?

Clock latency and clock jitter are not the same thing. Clock latency is a fixed offset (everything happens a little late, but consistently). Clock jitter is timing variation (the spacing between clock ticks changes slightly from moment to moment). In real setups, you often experience both as “not locked in,” but they require different fixes.

Learn more about the difference between clock latency and jitter

How to fix your latency issues

It’s common to reduce audio buffer size and think you’ve solved the problem, yet your hardware still feels slightly behind or “wobbly.” That’s because:

• Your monitoring may now be tight (audio latency improved)
• But your sync may still be inconsistent (clock latency/jitter remains)

Likewise, you can have a rock-solid clock to your hardware, but still feel lag when monitoring through the DAW because the audio round-trip latency is high.

 

Quick diagnostics checklist:

• If your playing/monitoring feels delayed (keys, pads, guitar, vocals): it’s likely audio latency.
• If your machines don’t start together, drift, or feel wobbly even when the tempo matches: it’s usually clock jitter (and sometimes clock latency).
• If recorded hardware lands late on the grid: it can be audio latency, clock latency, or both - you’ll need to measure.

 

How to measure audio latency:

1. Send a click out of your interface output.
2. Loop it back into an input.
3. Record both and measure the sample/ms offset.

This gives you round-trip latency and helps validate driver/buffer settings. Most DAWs and audio interfaces also “report” the audio latency as they already know its value based on the settings and the DAW session.

 

How to reduce audio latency (typical fixes)

• Lower buffer size (as low as stable)
• Use direct analog monitoring when recording
• Avoid high-latency plugins while tracking
• Use efficient drivers and a dedicated audio interface

 

How to measure clock latency:

• Record audio from a hardware device that is being clocked (e.g. a drum hit on step 1).
• Compare its timing against the DAW grid across multiple bars.

If it’s consistently late by the same amount, that’s mostly latency/offset. If it drifts or varies hit-to-hit, that’s jitter/instability.

 

How to reduce clock latency (and improve tightness)

• Keep it simple: minimize USB hubs and unnecessary MIDI routing
• Use a dedicated sync/clock solution like the Nome II with U-SYNC rather than relying on “best effort” MIDI timing from a busy computer
• Keep the clock chain simple: one master, clear distribution
• Prefer sync methods that are more stable in your setup (sometimes audio-derived clocking can help)

 

In short (tl:dr)

Is clock latency the same as MIDI latency?

Not exactly. “MIDI latency” is a broad term that can include note-on delays, interface delays, and clock/transport delays. Clock latency is specifically about timing reference signals (clock/start/stop) and how devices align to them.

 

Is MIDI Clock latency the same as jitter?

No, they are not the same. Clock latency is about how late the timing information arrives.. Clock jitter is about how consistent that timing is over time.

To learn more about this, read our article

 

What matters more for groove: audio latency or clock latency?

For performance feel while monitoring, audio latency dominates. For hardware tightness and phase alignment, clock latency, and especially jitter, often matters more.

 

Can you compensate for clock latency like audio latency?

You can often compensate for a consistent offset (delay). But jitter (timing variability) can’t be “offset away,” because it changes continuously.

To address your clock latency and jitter issues, you can get a dedicated clock device such as the Nome II.

 

Does everybody experience clock latency issues?

In one form or another, yes. But the more important questions are: Do they actually bother you? Are they disrupting your workflow? Are they making your music sound worse? 

If no, then keep going - don’t try to solve an issue you don’t have.

If yes, then try some of our suggestions in the article. And if it’s too much hassle, simply get a Nome II and get it to solve the problem for you with very minimal setup. 

 

Summary

Audio latency is the delay in the audio signal path. Clock latency is the delay in timing information reaching and being acted on by devices. If your monitoring feels late, look at buffers and audio routing. If your hardware feels unstable or not properly locked, look at clock delivery, jitter, and sync architecture.