Harmonic-Frontier-Audio/Overtone_Harmonic_Formant_Interaction_Preview

Harmonic Frontier Audio – Overtone/Harmonic Formant Interaction (Preview, v0.9)

A high-fidelity human vocal dataset designed for AI training, speech research, and expressive voice modeling.

Overtone/Harmonic Formant Interaction (Preview), created by Harmonic Frontier Audio, provides a compact reference set demonstrating the quality, formatting, and metadata conventions used in the Harmonic Frontier Audio Human Vocality Primitives series.

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🔎 Summary

This dataset provides high-quality, rights-cleared recordings of overtone and harmonic formant interaction behaviors — sustained voiced gestures in which vocal tract configuration is used to emphasize, steer, or partially isolate harmonic energy while maintaining a stable pitch center.

The recordings emphasize:

• neutral harmonic profiles for comparison
• second- and third-formant emphasis
• partial harmonic isolation
• resonance steering through formant alignment
• continuous formant sweeps across adjacent harmonic regions
• mid- and high-register behavior

These characteristics make the dataset valuable for AI voice modeling, phonetics and resonance research, harmonic-aware synthesis, formant and timbre control, and human-aligned vocal control systems.

Developed by Harmonic Frontier Audio, this preview follows The Proteus Standard™ for dataset provenance, transparency, and ethical AI use.
Learn more about the Proteus Standard → https://harmonicfrontieraudio.com/proteus-standard

Full dataset details and licensing information are available at:
https://harmonicfrontieraudio.com/datasets/overtone-harmonic-formant-interaction

If you find this dataset useful, please consider giving it a 🤍 on Hugging Face to help others discover it.

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🎶 About Overtone/Harmonic Formant Interaction

Harmonic emphasis occurs when vocal tract resonance is shaped so that particular regions of the harmonic spectrum become more prominent while the underlying pitch remains stable.
Formant interaction and resonance steering describe deliberate changes in vocal tract configuration that move this emphasis across harmonic regions, ranging from balanced profiles to stronger second- or third-formant emphasis and partial isolation of individual overtones.

These phenomena are foundational to:

• harmonic and formant-aware voice synthesis
• resonance and timbre modeling
• controllable spectral shaping in generative voice systems
• phonetic and acoustic research
• modeling relationships between stable pitch and changing vocal tract resonance

This dataset presents a neutral, non-linguistic, non-performative representation of overtone and harmonic-formant interaction.
It is not designed as musical overtone singing performance, but rather to isolate acoustic primitives underlying harmonic emphasis, partial isolation, and resonance steering.

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📂 Contents

Audio Files (.wav)

• Recorded at 96 kHz / 24-bit WAV format
• Exported as mono
• Fade-ins and fade-outs of 3–5 ms applied for consistency
• No compression, normalization, or creative processing applied
• High-pass filtered at ~40 Hz to remove subsonic rumble

This preview includes 3 representative audio files, selected to demonstrate:

• sustained harmonic emphasis with a stable pitch center
• partial isolation or targeted formant emphasis
• resonance steering across adjacent harmonic regions

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Metadata (.csv)

Includes structured fields for:

• file name
• sound source type
• airflow type
• phonation type
• gesture and articulation descriptors
• microphone and recording chain
• sample rate, bit depth, and dataset version

Metadata follows the Harmonic Frontier Audio – Foundations schema.

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🎤 Recording Notes

• Recorded in a treated studio environment using a single-mic setup:
  • Microphone: Rode NT1-A condenser microphone
  • Recording chain: Rode NT1-A → Zoom F8n Pro
• Captured at 96 kHz / 32-bit float, rendered as 96 kHz / 24-bit mono WAV for release.
• Performer positioned approximately 3.5 inches from the microphone, with the microphone approximately 10–15 degrees off-axis.
• Sustained harmonic states were recorded at approximately 6–8 seconds, with formant sweeps approximately 7–9 seconds.
• Stable pitch centers and natural resonance changes were preserved to retain the acoustic behavior of formant-driven harmonic emphasis.

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🌈 Spectrogram Preview

Below is a spectrogram illustrating concentrated harmonic energy, shifting resonance emphasis, and spectral movement characteristic of formant alignment, partial isolation, and overtone steering:

⚡ Usage

This preview pack is designed for:

• Evaluation of Harmonic Frontier Audio dataset quality and structure
• Testing AI and DSP systems that model harmonic emphasis, formant interaction, and spectral steering
• Research in phonetics, voice synthesis, resonance behavior, and harmonic-aware vocal modeling
• Creative sound design involving controlled overtone emphasis and shifting vocal resonance

👉 Note: This is not a full dataset.
The complete Overtone/Harmonic Formant Interaction dataset includes a substantially larger set of neutral harmonic profiles, second- and third-formant emphasis states, partial-isolation gestures, formant sweeps, and modal anchors across mid and high registers and is available for licensing.

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💡 Full Dataset Availability

This is a preview pack of the Overtone/Harmonic Formant Interaction Dataset.
The complete dataset is available for commercial licensing.

For licensing inquiries:
📩 info@harmonicfrontieraudio.com

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📥 How to Use This Dataset in Python

You can load the Parquet-converted version of this dataset directly with the datasets library:

from datasets import load_dataset

dataset = load_dataset(
    "Harmonic-Frontier-Audio/Overtone_Harmonic_Formant_Interaction_Preview",
    split="train"
)

print(dataset)

⚙️ Note: Parquet conversion and load_dataset() support will be available within 2–3 days of publication.

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🔗 Explore More from Harmonic Frontier Audio

• Human Vocality Primitives Series (Previews)
• Celtic Constellation Series (Previews)
• Extended Vocal Techniques Spectrum (Previews)
• Novelty Gems Cabinet (Previews)

(All datasets follow The Proteus Standard™ for ethical dataset provenance and licensing.)

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📜 License

Released under CC BY-NC 4.0.

• Free for non-commercial use, testing, and research
• Commercial licensing available via Harmonic Frontier Audio
• A formal rights declaration is included in this dataset bundle

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📧 Contact

Harmonic Frontier Audio
📩 info@harmonicfrontieraudio.com
🌐 https://harmonicfrontieraudio.com/

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🗒️ Release Notes

Version 0.9 (March 2026) – Initial Preview Pack release for Overtone/Harmonic Formant Interaction.
See CHANGELOG.md for detailed version history.

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Citation

If you use this dataset in your research, please cite:

Pullen, B. (2026). Overtone/Harmonic Formant Interaction Dataset (Preview) [Data set]. Harmonic Frontier Audio. Zenodo. https://doi.org/10.5281/zenodo.21959889

ORCID: https://orcid.org/0009-0003-4527-0178

BibTeX

@dataset{pullen_2026_overtoneharmonicformantinteraction_preview,
  author       = {Blake Pullen},
  title        = {Overtone/Harmonic Formant Interaction Dataset (Preview)},
  year         = {2026},
  publisher    = {Harmonic Frontier Audio},
  version      = {0.9},
  doi          = {10.5281/zenodo.21959889},
  url          = {https://doi.org/10.5281/zenodo.21959889}
}