FREE · PRIVATE · NO SIGNUP
Analyze 7.83 Hz in audio
Privately validate a direct 7.83 Hz tone, stereo binaural carrier difference, or 7.83 Hz amplitude modulation in your browser.
- 100% private, on-device processing
- Sampled Hann-window FFT
- WAV, MP3, M4A, AAC, OGG, FLAC, or WebM · at least 5 seconds · up to 100 MB
How to analyze 7.83 Hz in audio
Analyzing audio frequency content is straightforward:
1. Select or drag your audio file. The analyzer accepts WAV, MP3, M4A, AAC, OGG, FLAC, and WebM files that are at least 5 seconds long and up to 100 MB.
2. Wait for analysis to complete. The tool decodes your audio and performs frequency analysis across multiple time windows, checking for three different types of 7.83 Hz content: direct tone, binaural carrier difference, and amplitude modulation.
3. Review the results. The analyzer shows whether each type of 7.83 Hz content was detected, displays a frequency spectrum chart, and provides detailed metrics about signal strength and consistency.
4. Optionally create a binaural version. If your audio contains suitable content, you can generate a stereo version with proper binaural carriers and verify it meets full-duration requirements.
Private low-frequency analysis
Your audio is decoded and analyzed on this device with sampled Hann-window power-spectrum averaging. The file, channel samples, and results are not uploaded or stored.
Three separate 7.83 Hz checks
The analyzer independently checks for a prominent direct low-frequency peak, an isolated left/right carrier pair separated by 7.83 ±0.5 Hz, and a 7.83 Hz amplitude-envelope peak on audible content. A match verifies only the digital signal structure, not physical Schumann resonance, audibility, brainwave entrainment, relaxation, or sleep efficacy.
Supported audio and measurement limits
Analyze one WAV, MP3, M4A, AAC, OGG, FLAC, or WebM file that is at least 5 seconds long and up to 100 MB. Long files are sampled across their full duration. Format decoding depends on browser support. This signal measurement does not establish medical or sleep efficacy.
Create and verify a full-duration binaural version
The optional creator adds separate audible carriers to the left and right channels, automatically chooses the lowest common carrier level that clears every continuous 1-second window, then exports 48 kHz / 24-bit PCM WAV. Full-duration creation is limited to 64 MiB of decoded stereo PCM. Stereo headphones and separated channels are required for binaural presentation.
Frequently asked questions
Is my audio uploaded?
No. Decoding, FFT analysis, and chart generation all run in your browser, and nothing is retained after you leave the page.
How is a binaural beat checked?
The analyzer keeps left and right spectra separate, looks for prominent audible carriers whose spacing is 7.83 ±0.5 Hz, and requires each carrier to be isolated in its intended channel. It does not expect a 7.83 Hz acoustic peak.
What does full-duration verification mean?
Every overlapping 1-second window across the created output, including a window aligned to the end, must pass carrier level, local prominence, channel isolation, and carrier-difference checks. Sampled detection of a general uploaded file is reported separately.
Does a passing result prove the audio improves sleep?
No. The result verifies a defined signal property only and is not evidence of a health, relaxation, or sleep outcome.
Which scientific sources informed this page?
These sources informed the distinctions among geophysical Schumann resonance, digital audio signals, binaural beats, infrasonic audibility, and claimed physiological effects. Their inclusion is not an endorsement of product efficacy.
- Nickolaenko, A. P., & Hayakawa, M. (2014). Schumann Resonance for Tyros. Springer Japan.
- Saroka, K. S., Vares, D. E., & Persinger, M. A. (2016). Similar Spectral Power Densities Within the Schumann Resonance and a Large Population of Quantitative Electroencephalographic Profiles. PLOS ONE, 11(1), e0146595.
- Ingendoh, R. M., Posny, E. S., & Heine, A. (2023). Binaural beats to entrain the brain? A systematic review of the effects of binaural beat stimulation on brain oscillatory activity, and the implications for psychological research and intervention. PLOS ONE, 18(5), e0286023.
- Platt, J., & Hammond, L. (2025). Is non-clinical, personal use of binaural beats audio an effective stress-management strategy? A systematic review of randomised control trials. Advances in Mental Health, 23(2), 258-286.
- Møller, H., & Pedersen, C. S. (2004). Hearing at low and infrasonic frequencies. Noise & Health, 6(23), 37-57. PMID: 15273023.
- Huang, Y.-S., Tang, I., Chin, W.-C., et al. (2022). The Subjective and Objective Improvement of Non-Invasive Treatment of Schumann Resonance in Insomnia-A Randomized and Double-Blinded Study. Nature and Science of Sleep, 14, 1113-1124.
- Persinger, M. A. (2014). Schumann Resonance Frequencies Found within Quantitative Electroencephalographic Activity: Implications for Earth-Brain Interactions. International Letters of Chemistry, Physics and Astronomy, 30, 24-32.