Wireless Microphone Latency Explained

Latency is the delay between speaking and the audio arriving at the computer. It is the main technical limitation of phone-as-microphone setups, and understanding it helps you choose the right connection and settings.

Where the delay comes from

Every stage adds milliseconds: audio capture buffering on the phone, network transmission, decoding on the PC, and the buffer of the application using the microphone. Wi-Fi typically adds 50-150 ms in total; Bluetooth adds another 100-150 ms.

• Phone capture buffer: 10-40 ms
• Wi-Fi transmission: 20-80 ms
• PC decode and driver: 10-30 ms
• Application buffer: 10-50 ms

What latency is acceptable

For voice chat, anything under 200 ms feels natural. For recording where you monitor yourself, under 50 ms is comfortable – which is why USB is preferred. For lip-sync video, either use USB or apply a sync offset in OBS.

How to reduce latency

Use USB instead of Wi-Fi. Switch to a 5 GHz network and disable Wi-Fi power saving on the PC adapter. Lower the buffer size in the app if the option exists. Close bandwidth-heavy applications during calls.

Measuring your latency

Record a clap on camera and the same clap through the microphone in OBS. Compare the waveforms in an editor: the offset between them is your total latency. Set the audio sync offset to that value.

Frequently Asked Questions

Can latency be eliminated entirely?

Not wirelessly. USB gets close to wired microphone latency.

Does 5 GHz Wi-Fi really help?

Yes – less congestion and higher throughput typically cut delay and dropouts.

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