Sound Checks for Interviews and Panels Before the Dark Evenings

Mid autumn brings a different set of rooms. Heating comes on in venues that sat quiet all summer, windows stay shut against the cold, and evening events start after dark when the building is emptying around you. Each of these shows up in a recording, usually in the first minute of a sound check if you are listening for it.

I treat the sound check as a short, fixed routine rather than a mood. When the steps are always the same, you notice what is different about this particular room, and that difference is the problem worth solving. The routine below is the one I teach in the sound check module, adjusted for the coming months.

Start by arriving earlier than feels necessary. A check squeezed into the ten minutes before doors open turns every fault into a compromise. With thirty minutes in hand, a hum can be traced and a speaker moved rather than tolerated.

Before any cable comes out, stand in the middle of the space and stay quiet for a full minute. Heating systems cycle on and off, fluorescent fittings buzz, and a projector fan can sit just under the level of speech. Note each source and where it comes from.

Autumn rooms often carry a low rumble from ventilation that was switched to winter mode. It rarely sounds loud in the room, but a sensitive microphone and a boosted gain stage will bring it forward. If the system has a timer, ask the venue contact whether it can be set to a quieter mode for the event.

Clap once and listen to the tail. A bare hall with hard walls rings for a long moment, while a room with curtains and carpet swallows the sound. That tells you how close the microphones need to sit to the speakers, because a roomy space punishes distance.

• Stand still for a full minute and note every steady noise
• Check heating, ventilation and lighting for hum or rattle
• Clap once to hear how long the room rings

Ask each speaker to talk at the level they will use on the day, not a polite test voice. Counting up from one works poorly because people shift into a performance. A better prompt is a simple question about their morning or their journey, which gets natural pacing and natural volume.

Work along the table from left to right every time. Set gain while they talk, watch the meter and listen on headphones, then move to the next person. Keeping the order fixed means you never forget someone, and it gives the producer a rhythm to follow.

Listen for clothing rustle on lavaliers. Autumn jackets and knitwear are noisier than summer shirts, and a collar brushing the capsule is easy to miss until the edit. Reposition the clip before you move on rather than promising to fix it later.

• Use a natural question, not a counting test
• Go left to right, one speaker at a time
• Check for knitwear and jacket rustle on lavaliers

Room tone is thirty seconds of the space with nobody speaking. It sounds like nothing, and that is the point. In the edit it fills the gaps between cuts so the background does not jump, and it gives noise reduction a clean sample to work from.

Ask the whole room to hold still and quiet, including the crew. Record it after the speakers are seated and the heating is in the state it will be in during the session, because a tone captured with the system off will not match the finished interview.

Name the file clearly and keep it with the day's material. Panels in particular benefit from a fresh tone for each room change, since a corridor, a stage and a side room each have their own character.

Record a minute of the check with everyone speaking and listen back on headphones, not on the meter. The meter tells you about level, but only your ears tell you about the thing a viewer will notice first, such as a distant door, a chair scrape or a mouth click.

Playback is also the moment to agree small changes with the producer. If one guest sits further from the table than planned, it is far easier to move a microphone now than to explain a thin voice later.

If the venue allows it, walk to where the audience will sit and listen to any live sound reinforcement. A speaker that feeds back at the back of the room can bleed into your microphones, and that is a conversation to have before the event.

• Listen back on headphones, not only on the meter
• Agree seating or microphone changes before recording
• Check that room speakers are not feeding into the mics

Put the steps on one card and keep it in the kit bag: arrive early, listen to the room, check each speaker in order, record tone, play back. It takes about twenty minutes once you are practised, and it fits an interview or a small panel equally well.

Shorter days mean more evening events and more rooms you have never seen. A fixed routine gives you a calm way into an unfamiliar space, and it leaves a record you can compare from one venue to the next.

Later articles on this site go further into mixer setup, backup recording and noise in the venue. This note is only about the check itself, done the same way each time, so that you hear problems while they are still cheap to fix.