# Audio Latency Test

Audio Latency Test is an English browser tool site at https://audiolatencytest.wiki/. It helps users estimate sound delay in headphones, Bluetooth earbuds, speakers, microphones, games, video calls, streaming, and A/V sync workflows.

## Primary Tools

The homepage provides three practical modes. Tap Test plays a steady beat and compares the browser trigger time with the user response time. Mic Round-Trip mode requests microphone permission, plays short pulses, and attempts to detect the pulse through a microphone for speaker-to-microphone round-trip estimates. A/V Sync mode flashes a visual cue and plays a beep so users can tune a manual offset.

## Core Pages

- /audio-latency-calculator/ calculates estimated one-way and round-trip audio latency from buffer size, sample rate, path stages, and known extra processing delay. It shows the formula, examples for 44.1 kHz and 48 kHz, practical limitations, and links to real audio latency tests.
- /headphone-latency-test/ focuses on wired headphones, earbuds, gaming headsets, and laptop output delay.
- /bluetooth-latency-test/ focuses on Bluetooth audio lag, low-latency modes, wireless earbuds, and video/game sync.
- /bluetooth-audio-delay-fix/ explains how to diagnose and reduce Bluetooth headphone delay across Windows, phones, TVs, games, and calls, including repeatable testing and A/V correction limits.
- /mic-latency-test/ focuses on microphone round-trip delay, recording lag, streaming, and speaker pickup checks.
- /speaker-latency-test/ focuses on practical delay comparisons for laptop speakers, TVs, soundbars, monitors, USB speakers, and Bluetooth playback.
- /audio-sync-test/ focuses on flash-and-beep alignment for sound and video delay.

## Limitations

Browser audio tests are practical estimates, not certified lab measurements. Results can vary because of browser scheduling, operating-system buffers, drivers, Bluetooth codecs, room acoustics, microphone placement, and human reaction time. Users should repeat tests and compare averages across devices. Professional recording or broadcast decisions should be confirmed with dedicated measurement tools.

## Privacy and Support

The normal test workflow runs locally in the browser. Mic Round-Trip mode uses microphone permission only while the test is active. Support email is support@audiolatencytest.wiki. Legal pages are available at /privacy-policy/ and /terms-of-service/.

## What Is Audio Latency?
https://audiolatencytest.wiki/what-is-audio-latency/
Practical guide to audio latency in milliseconds, acceptable thresholds, causes, testing, and fixes.
## How to Test Audio Delay on PC
https://audiolatencytest.wiki/how-to-test-audio-delay/
Step-by-step guide to testing PC audio delay with a repeatable flash-and-beep method, a wired baseline, Bluetooth and microphone path isolation, millisecond interpretation, troubleshooting, and browser-test limitations.
## Audio Drift Fix
https://audiolatencytest.wiki/audio-drift-fix/
Guide to separating a fixed audio delay from a growing audio-video gap, checking the beginning, middle, and end of a recording, diagnosing clock, sample-rate, frame-rate, buffering, and capture-path causes, and verifying repairs in files, OBS, VLC, browsers, and live streams.
## OBS Capture Card Audio Delay Fix
https://audiolatencytest.wiki/obs-audio-delay-fix/
Troubleshooting guide for fixed Sync Offset, capture-card buffering, sample-rate mismatch, USB stability, monitoring echo, and audio drift over time.

## Windows 11 Audio Latency Fix
https://audiolatencytest.wiki/windows-11-audio-latency-fix/

## High DPC Latency Fix
https://audiolatencytest.wiki/high-dpc-latency/

Diagnose repeated DPC and ISR spikes with LatencyMon, map driver filenames to network, GPU, storage or USB device families, apply reversible fixes, and verify audio dropouts under the same workload.
Step-by-step guide for drivers, Windows audio modes, formats, Bluetooth, USB audio, games, recording buffers, and repeatable verification.

## YouTube Audio Delay Fix
https://audiolatencytest.wiki/youtube-audio-delay/

Troubleshooting guide for YouTube sound that is ahead, behind, or drifting out of sync across browsers, mobile apps, Bluetooth headphones, smart TVs, HDMI, and soundbars.

## VLC Audio Delay Fix
https://audiolatencytest.wiki/vlc-audio-delay-fix/

Guide to fixing VLC audio delay with keyboard shortcuts, Track Synchronization, reset steps, and repeatable checks that separate a media-file problem from Bluetooth, HDMI, TV, and soundbar processing.

## Ableton Latency Fix
https://audiolatencytest.wiki/ableton-latency-fix/

Practical guide to Ableton Live latency while recording or monitoring. Covers driver mode, sample rate, buffer size, Reduced Latency When Monitoring, plugin delay compensation, MIDI/input delay, direct monitoring and repeatable verification.