Alexa Doesn't See Your Logo. She Hears It — or Nothing at All

For a hundred years, marketing designed brands for the eyes. Logo, colors, typography, packaging layout — the entire brand book assumes the customer is looking. Meanwhile, a sales channel is growing where the customer doesn't look at all. They talk. And in a conversation with a voice assistant, your brand either has a voice — or it doesn't exist.

The Screen Disappears. What's Left of the Brand?

Researchers call interacting with a voice assistant a "pre-literate" experience. It sounds paradoxical — we're talking about one of the most advanced technologies on the market. But the mechanism is exactly that: the customer doesn't read, doesn't watch, doesn't compare visually. They listen and speak. Just as people experienced the world before writing was invented.

For a brand, this is a fundamental shift. In a brick-and-mortar store, the packaging does the work. In e-commerce, it's photos, banners, and the site's visual identity. In the voice channel, none of that works. Three carriers remain: the name spoken out loud, the voice the brand speaks with, and the sounds it uses.

If a brand hasn't designed any of them, the platform's algorithm represents it in the voice channel. Alexa's or Google Assistant's synthetic voice will read your product's name in the same tone it reads your competitor's. All the distinctiveness you've invested in for years vanishes in a single sentence from an assistant.

Voice Commerce Is Growing. And It's Not Asking Permission

Voice shopping is no longer a tech-expo curiosity. Studies from 2025 — by Sahai and Patil, and by Dhuri and Patil — describe voice commerce as a growing shopping channel headed for a dominant position. So this isn't a "decade from now" scenario. It's a channel that is building share right now.

It's worth understanding why this growth is more dangerous for brands than just another sales platform. A voice interface narrows choice by its very nature. A hypermarket shelf shows dozens of products at once. A website — a dozen or so per screen. A voice assistant reads out one, two, maybe three suggestions. Nobody is going to sit through a list of twenty laundry detergents.

In a funnel like that, a brand has two paths. One: the customer asks for it by name, because they remember and recognize it. Two: the customer asks for a category, and the algorithm makes the choice. Sonic identity works for that first path — it builds brand memory in a channel where there simply are no other cues.

And this isn't just an FMCG problem. The same logic applies to every brand that talks to customers without a screen: through a call center, a customer-service voicebot, an assistant in an app or in a car. If you manage a B2B brand, count how many times a day your company speaks to customers in a voice nobody designed. That's usually more touchpoints than many an ad campaign covers.

The Voice Persona: A New Asset in Your Brand Book

If voice is becoming the brand's interface, it needs to be designed as deliberately as a logo. We call this asset a voice persona — the brand's vocal personality. It comes down to a handful of decisions:

• gender and timbre — who speaks on the brand's behalf,
• accent and pronunciation — where the voice "comes from" and who it's addressing,
• prosody — the pace, melody, and rhythm of speech,
• vocabulary and syntax — does the brand speak in short, concrete sentences, or does it tell stories,
• a signature sound — a distinctive cue that confirms: it's us.

Each of these decisions carries meaning. A low, slow voice communicates something different than a high, energetic one. A premium brand speaks differently than a discount brand — and the customer hears the difference before they can put it into words.

Consistency matters just as much. If a brand speaks in a warm, calm voice in its TV spots but greets customers on the hotline in a completely different tone, the listener's mind doesn't form one brand — it forms two. A consistent voice persona ties those touchpoints into a single experience — and it streamlines production decisions along the way: no more casting a voice actor from scratch for every campaign.

The key word is system. A voice persona is not a single voiceover recorded for one campaign. It's a set of rules that works everywhere the brand speaks or sounds — in the app, on the hotline, in a voice assistant, in advertising. You'll find more on this approach in our case studies.

Warmth and Competence: The Two Conditions Science Sets

So what does a good brand voice sound like? That question is answered by the first systematic study of how voice assistants affect brand engagement — the 2020 paper by McLean, Osei-Frimpong, and Barhorst, published in the Journal of Business Research.

The conclusion is precise: a voice persona needs two attributes at once. The first is warmth — the impression of friendliness and good intentions, which builds the relationship. The second is competence — the impression of knowledge and capability, which builds trust.

That sets the bar higher than it seems. A voice that is only warm sounds pleasant but doesn't convince anyone the brand knows what it's doing. A voice that is only competent sounds like a hotline robot — efficient and cold. Only the combination of both dimensions makes customers want to talk with a brand rather than just get things done.

For a marketer, the practical takeaway is this: casting a voice actor or designing a synthetic voice is not an aesthetic decision — it's a strategic one. Make it based on defined brand attributes, not on which voice "sounds nice" at the audition.

Music That Hears Your Heartbeat

Voice isn't where the changes end. In parallel, adaptive audio technology is taking hold in retail. In 2021, Rodgers and co-authors described systems in which artificial intelligence tunes in-store music to customers' biometrics: heart rate variability (HRV), walking pace, and facial expressions.

The scenario goes like this: the system reads the physiological signals of people in the store and adjusts the music in real time to match their state. A tense customer hears something different than a relaxed one. The sound environment stops being fixed scenery and becomes a dynamic response to what's happening inside a person.

For brands, this is an opportunity and a maturity test at the same time. An opportunity — because sound matched to a customer's state can genuinely improve the shopping experience. A test — because the same technology used without principles stops serving the customer and starts playing them.

Where Influence Ends and Manipulation Begins

The line is worth drawing out loud. Influence is when a brand designs sound that's true to its identity and beneficial to the customer — and the customer can recognize that influence. Manipulation begins where a system uses bodily signals the customer doesn't know are being collected, for purposes they would never accept.

That's why adaptive audio demands the same rules as any processing of customer data: transparency, consent, and a clear purpose. Brands that adopt this technology with principles will build an advantage. Brands that adopt it without them will build the makings of a PR crisis.

The whole picture points to one conclusion. The voice and sound channel is no longer an add-on to "real" marketing. For a growing group of customers, it's becoming the first — and sometimes the only — touchpoint with a brand. The question is no longer whether your brand needs a sonic identity. The question is: who will design it — you, or the algorithm of the platform you sell on.

Sources

• McLean, Osei-Frimpong, Barhorst (2020), Journal of Business Research — the first systematic study of voice assistants' impact on brand engagement; warmth and competence as required voice persona attributes.
• Sahai, Patil (2025) — voice commerce as a growing, soon-to-be-dominant shopping channel.
• Dhuri, Patil (2025) — the development of voice commerce as a shopping channel.
• Rodgers et al. (2021) — AI-driven music tuned to customers' HRV, walking pace, and facial expressions in retail spaces.

We'll design your brand's voice before the platform's algorithm does it for you. Let's talk — we'll start with a simple question: what does your brand sound like today, and would your customer recognize it with their eyes closed?