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Thanks, @urszula!
I got the following AI-generated answer when I prompted the Brave browser with “what science says about the most noticeable ringtone sounds” – an issue important to me yesterday after finishing a race morning with 30,000 participants, many of whom gathered simultaneously in a cavernous building after crossing the finish line, as this made me wonder whether I was missing any incoming calls due to my poor choice in ringtone.
The most noticeable ringtone sounds are influenced by several scientific principles related to human auditory perception, environmental noise, and cognitive processing. To be audible in noisy environments like urban areas, a ringtone should avoid frequencies where background noise is strongest. Traffic noise predominantly has power around 100 Hz, with a steady rolloff at higher frequencies, meaning tones above this range are less likely to be masked. Therefore, ringtones with concentrated energy in the 1,000–3,000 Hz range—where human hearing is most sensitive—are more effective at cutting through ambient noise. Sustained tones, rather than short transients, are perceived as louder due to increased duration, and a rising envelope enhances the perception of proximity and loudness.
Additionally, research suggests that ringtones composed of low-frequency sounds, particularly around 500 Hz, are more detectable in loud environments because humans are most sensitive to this frequency under noise conditions. When ambient noise increases from 70 dB to 80 dB, the ringtone volume should be increased by 10–15 dB on average to maintain detectability, and the required volume adjustment varies depending on the ringtone’s frequency.
From a cognitive and emotional perspective, personally significant sounds—such as one’s own ringtone—are processed rapidly by the brain, with enhanced neural activity detectable as early as 40 milliseconds after sound onset. This rapid processing helps the brain distinguish important signals from background noise, even when the sound is complex. Furthermore, familiar and melodic ringtones can trigger positive emotions and anticipation, improving the user experience, while harsh or repetitive tones may induce irritation and negatively affect communication. Unexpected exposure to familiar song snippets, such as a popular fight song, can impair attention and decision-making for longer durations than standard ringtones, indicating that the emotional and cognitive impact of a ringtone extends beyond mere audibility.
In contrast, high-frequency ringtones above 17 kHz, such as the “Mosquito” tone, exploit age-related hearing loss (presbycusis), making them inaudible to most adults but audible to younger individuals. While not designed for general audibility, these tones are notable for their ability to signal discreetly in environments where adult detection is undesirable.
In summary, the most noticeable ringtones are those with frequencies in the 1–3 kHz range, sustained and rising envelopes, and high perceptual salience, while personal relevance and familiarity further enhance their detectability and effectiveness.
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This is a SUPER fascinating subject. When I was researching the alarm blog & going through the studies, one of the thing that I kept coming up about how people previewed sound is how their nervous system reacts to stimulation. Every person has a slightly different loudness growth function. Two people can hear the same sound at the same dB level and experience it completely differently.
That said, what you wrote does make sense & I can totally understand that some of our ringtones may be too gentle for some individuals. That’s why * custom ringtones and notification sounds are coming to Kompakt in 2026 
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For me, alarm ringtone same as the call ringtone does the trick every time. 
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