Measuring Lip Sync Error Using the Harkwood Sync-One2

The Harkwood Sync-One2 is a tool designed to measure the lip sync error of a full AV setup involving a source device and sink device, such as a cinema, a video production workstation, a specific Blu-Ray player paired with a TV and sound system, etc. It can be used to calibrate a setup based on the time it takes for sound to travel from the speakers to the listening position.

Measuring the Lip Sync Error of a Sink Device

It may be possible to use this tool to measure the lip sync error of a single audio/video sink device, such as a TV, but care must be taken in selecting a source device, such as an HDMI signal generator.

Unfortunately, if you are using a test file or Blu-Ray disc with your own source device, such as a Blu-Ray player or computer, you are just as likely to be measuring the lip sync error of your source device as you are to be measuring the lip sync error of your sink device.

Author’s note: I do not yet have any recommendations on an HDMI signal generator or a source device that can reliably generate an HDMI signal that precisely matches the audio/video synchronization expected by the Harkwood Sync-One2. Please let me know if you are interested in a thorough review of a source device, such as an HDMI signal generator or Blu-Ray player, for use with the Sync-One2.

Last updated on September 29th, 2021.