Reference
The science
What the tone in Sonor is, how its pulse and its pitch work, and what research has and hasn’t measured. Each page cites its sources. Pages on each band and on each solfeggio frequency belong to this same section.
- Alpha, explained
What alpha is in EEG terms, what studies have measured with alpha-rate sound, and how Sonor sets its 8 to 13 Hz pulse range.
- Beta, explained
What beta is in EEG terms, what studies have measured with beta-rate sound, and how Sonor sets its 13 to 30 Hz pulse range.
- Delta, explained
What delta is in EEG terms, what studies have measured with delta-rate sound, and how Sonor sets its slowest pulse range.
- Gamma, explained
What gamma is in EEG terms, why the 40 Hz brain response is well measured, and how Sonor sets its 30 to 50 Hz pulse range.
- Theta, explained
What theta is in EEG terms, what studies have measured with theta-rate sound, and how Sonor sets its 4 to 8 Hz pulse range.
- Carrier frequencies, explained
A plain-language guide to carrier frequencies: the pitch you actually hear, why Sonor's isochronic tone needs one, and what the research does and doesn't show.
- Isochronic tones, explained
A plain-language guide to isochronic tones: how they work, what the five brain-wave bands mean, and what the research does and doesn't show, with links to 9 sources.
- Solfeggio tones, explained
A plain-language guide to the nine solfeggio frequencies Sonor offers as carrier pitches: where the numbers come from and what the research does and doesn't show.
- 174 Hz, explained
Where the 174 Hz solfeggio pitch comes from, what the literature review found about it, and how Sonor uses it as a carrier pitch.
- 285 Hz, explained
Where the 285 Hz solfeggio pitch comes from, what the literature review found about it, and how Sonor uses it as a carrier pitch.
- 396 Hz, explained
Where the 396 Hz solfeggio pitch comes from, what the literature review found about it, and how Sonor uses it as a carrier pitch.
- 417 Hz, explained
Where the 417 Hz solfeggio pitch comes from, what the literature review found about it, and how Sonor uses it as a carrier pitch.
- 528 Hz, explained
Where the 528 Hz solfeggio pitch comes from, what the studies on it did and did not test, and how Sonor uses it as a carrier pitch.
- 639 Hz, explained
Where the 639 Hz solfeggio pitch comes from, what the literature review found about it, and how Sonor uses it as a carrier pitch.
- 741 Hz, explained
Where the 741 Hz solfeggio pitch comes from, what a 2022 fact-check and the literature review found, and how Sonor uses it as a carrier pitch.
- 852 Hz, explained
Where the 852 Hz solfeggio pitch comes from, what the literature review found about it, and how Sonor uses it as a carrier pitch.
- 963 Hz, explained
Where the 963 Hz solfeggio pitch comes from, what the literature review found about it, and how Sonor uses it as a carrier pitch.
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