Latest / Restaurant Business with Fexingo: Food Service, Hospitality, and Independent Operators / Why Restaurant Sound Design Affects Your Bottom Line
Transcript
- Lucas: You walk into a restaurant, and within thirty seconds, you already know whether you're going to stay for one drink or three courses. And a lot of that decision isn't about the food or the service — it's about what you're hearing. Luna: The sound. And I think most operators treat it as an afterthought — they throw up a couple of ceiling speakers, stream a generic Spotify playlist, call it done. Lucas: Exactly. But the research is pretty clear that audio design — intentional audio design — directly affects check averages, table turnover, and even how staff interact with guests. There was a Cornell study from last year that looked at this in some depth. Luna: The one that found 72 decibels is the sweet spot? I've seen that cited a few times. Lucas: That's exactly it. Researchers manipulated the ambient noise level in a controlled dining environment. At 72 decibels — about the level of a busy cafe — alcohol sales jumped twenty-three percent compared to a quieter room at sixty-five decibels. But here's the kicker: food check size dropped slightly. People ordered more drinks but lighter food. So if your margin is on the bar, that's great. If you're a steakhouse, maybe not. Luna: So the ideal sound level really depends on your concept. A wine bar wants one thing, a family diner wants another. Lucas: Right. And it goes beyond just volume. Tempo matters, genre matters, even the type of speaker and where it's placed. I talked to an acoustic consultant in Chicago who worked with a mid-priced Italian spot in River North. They installed a directional speaker array that created sound zones — louder near the bar, softer at the tables — and they saw a twelve-dollar increase in per-person revenue within two months. Not because the food changed, but because the bar crowd felt more energetic and the diners felt more intimate. Luna: Twelve dollars per head is huge. That's like a thirty percent lift on a forty-dollar check. And it's just from moving sound around. Lucas: Exactly. The same consultant told me about a London cafe that was struggling with dwell time — people camping on laptops for three hours with a single latte. They installed a sound masking system that subtly increased ambient noise by about five decibels and shifted the music to a slightly faster BPM. Average dwell time dropped fourteen minutes. They didn't add any signs or kick anyone out. The sound just made people feel like it was time to go. Luna: That is elegant. It's a nudge, not a shove. And it's invisible to the guest — they just feel a bit less comfortable lingering. Lucas: Right. And it scales. A single speaker upgrade costs maybe a few hundred dollars. An acoustic consultation runs a few thousand. But if it's lifting revenue by even five percent year over year, the payback period is weeks. Luna: What about open kitchens? I feel like those are a huge source of unintended noise. Lucas: Massive. And they're still trendy, so operators are reluctant to wall them off. But a standard open kitchen with hoods running, pans clanging, tickets calling — that can push the noise floor to seventy-eight decibels. That's above the Cornell sweet spot. And it's uneven — tables near the kitchen get blasted, tables far away are fine. The real fix is acoustic treatment in the kitchen itself: sound-absorbing panels on the ceiling, rubber mats, quieter hoods. Some consultants actually recommend a glass partition that's acoustically treated — you still get the visual of the kitchen, but the sound is dampened. Luna: I've also heard that the type of music matters way more than people think. One study showed that playing classical music in a wine bar increased average spend by about twelve percent compared to top forty. Lucas: Yeah, the 'wine bar effect' is well documented. There's a 2019 study from the University of Leicester that found French music led to more French wine sales, German music to more German wine. It's subconscious priming. But in practice, I think the bigger mistake operators make is letting the playlist get stale. The same ten songs on repeat — staff start to hate it, and that affects service quality. Some chains now use dynamic playlists that change tempo by time of day: faster during lunch rush, slower at dinner, quieter late night. Luna: So you're essentially designing a soundtrack that matches the revenue curve. Faster turnover at peak times, higher spend during slow periods. Lucas: Exactly. And the technology to do that is cheap now. A tablet running Spotify or a dedicated service like Soundtrack Your Brand costs maybe thirty dollars a month. The issue is that owners don't think about it strategically. They set it and forget it. Luna: Let's talk about the flip side — when sound goes wrong. I remember a New York restaurant that got sued by neighbors over noise levels, and the city actually forced them to install soundproofing. Lucas: That's becoming more common. In dense urban areas, noise complaints from residents are a real threat to a restaurant's license. So acoustic design isn't just about revenue — it's about regulatory compliance. Some operators are now budgeting for acoustic consultants at the design phase, before they even open. It's cheaper than retrofitting. Luna: And it's not just external noise. Internal noise can affect staff too. High noise levels lead to fatigue, miscommunication, even hearing damage over time. Lucas: That's a point that doesn't get enough attention. In a busy kitchen, you're already in a high-stress environment. Add seventy-five decibels of ambient noise, and you're forcing staff to shout. That increases mistakes, slows service, and raises turnover. Some restaurants have started using noise-canceling earpieces for the expediter — they can hear the tickets clearly without the room being quieter. Luna: That's a clever workaround. Fix the employee experience without changing the customer experience. Lucas: Right. And the ROI on that is hard to measure, but it's real. Lower turnover, fewer comped meals due to errors, faster ticket times. Luna: So what's the first step for an operator listening to this? They're running a thirty-seat bistro, they've never thought about sound — where do they start? Lucas: Walk through the space at peak hour with a decibel meter app — they're free — and map out the hot spots. If you see a ten-decibel difference between the front and the back, you have a problem. Then check your speaker placement. If all the sound is coming from one corner, you're creating a lopsided experience. The cheapest fix is to add a few small speakers spread out, each at low volume, rather than one loud speaker. That gives you even coverage. Luna: And then look at the playlist. Make sure it fits the concept and changes by time of day. Lucas: Exactly. And if you want to get really sophisticated, think about zoning — different sound in the bar versus the dining room. It doesn't have to be expensive. A hundred dollars of wire and two extra speakers can change the whole feel of a room. Luna: It's one of those rare fixes that touches every part of the business: guest satisfaction, revenue, staff retention, even legal risk. Lucas: It is. And yet most operators treat it as an aesthetic choice rather than a financial lever. We talk a lot on this show about menu engineering and table layout — sound design deserves a spot in that conversation. Luna: Quick honest thing — we try to keep this show useful and ad-free, and that's only possible because a handful of listeners chip in monthly through buy me a coffee dot com slash fexingo. It's literally what funds making this many episodes. Lucas: Yeah. If these conversations have moved your work forward in some small way, that's the reason we do it. And the support makes sure we can keep digging into angles like this one. Luna: So, back to sound — if you were going to give one piece of advice to a new restaurateur building their first space, what would it be? Lucas: Design the sound before you open, not after. It costs ten times more to fix a noisy room than to build a quiet one. And don't assume that louder is better — the goal is to create an environment that matches the experience you're selling. For most concepts, that means a controlled, intentional soundscape that you can adjust as your business evolves.