Audio Sync and Mixing Workflows: What We Now Offer Studio Teams

What the service covers

Audio Sync and Mixing Workflows is the part of our work that keeps sound and picture aligned from the microphone to the transmission point. We look at how audio is embedded into the video signal, how delay is measured and compensated, and how the mixing desk is arranged so that an operator can work calmly through a long show.

This autumn we have reorganised how we describe that work, so that producers and studio managers can see the stages plainly before they get in touch. Priya Mistry, our audio engineer, leads the technical side. I write here as the person who sits next to her on projects, usually when lighting and sound have to share the same rig and the same patience.

The aim is modest and practical: a workflow that your crew understands, can repeat, and can fix quickly when something drifts.

• Embedded audio planning
• Delay measurement and compensation
• Mixing desk layout and routing
• Written notes your crew can keep

Embedded audio, step by step

Embedding means carrying the sound inside the same cable as the picture. It reduces the number of separate connections, but it also means audio now travels through every piece of video equipment on its way, and each of them may add a small delay or change how channels are arranged.

We begin by drawing the signal path as it really exists in your studio or venue, from sources through routers, converters and monitoring to the output. Then we mark every point where audio is embedded or taken out again, and note which channel pairs carry which signals.

That drawing becomes the reference for everything else. When a fault appears during a rehearsal, the crew can follow it rather than guess.

Delay compensation without guesswork

Picture processing usually takes longer than audio, so sound arrives early unless it is held back. The gap may be a few frames in a simple studio and noticeably more where graphics, scalers and remote feeds are involved. Viewers feel it long before they can explain it.

We measure the delay at the points that matter, using a test signal where the set-up allows it and a visual check against a clapper or a known cue where it does not. We then record the figures against each source so the compensation can be set once and trusted.

Where feeds from different places meet, such as a remote contributor joining a studio programme, we note the extra delay separately, because it changes with the connection and needs its own checking before each broadcast.

Mixing set-ups that suit the show

A good mixing arrangement reflects the programme, not the equipment list. A chat show with four presenters and a band needs different grouping, monitoring and talkback than a live event with spoken inserts and playback.

We discuss how many sources are live at once, who needs to hear what, and what the operator must be able to reach without looking down. Then we propose a layout for the desk, with groups, busses and a clear naming scheme that anyone on the crew can read.

Priya also pays attention to the unglamorous parts: spare channels, a clean fallback if a radio microphone fails, and a level reference that stays the same from rehearsal to transmission.

• Grouping and bus structure
• Monitoring and talkback
• Fallback channels
• Consistent level references

How a project usually runs

Most projects start with an enquiry through the contact page, where you describe the venue, the kind of programme and the problem you have noticed. We then agree the scope in writing, visit or review your drawings, and carry out the measurements and design work.

You receive a written summary: the signal path as found, the delay figures, the recommended mixing arrangement and a short list of changes in order of priority. Where useful, we spend a session with your operators walking through it on the real equipment.

We do not install or supply hardware. The work is advice, measurement and documentation, so your own engineers or your chosen contractor carry out any changes.

What to prepare before you contact us

A few things speed the work considerably. A rough diagram of your video and audio path, even a hand sketch, saves a first visit. A list of the equipment between camera and output, and notes on any symptoms, such as lips that seem late or levels that change between rehearsal and show, help us decide where to measure first.

It also helps to know who operates the sound on a normal day, and who will need to understand the result. We write for the people who will use the documents, so knowing their experience shapes how much detail we give.

If your set-up is changing soon, tell us when. Measurements taken on equipment that is about to be replaced are less useful than a plan made for what will be there.

• Signal path sketch
• Equipment list
• Description of symptoms
• Names of the operators