SunHi
Female • Korean • South Korea
SunHi is a high-fidelity neural voice specialized in Korean with a natural South Korea cadence. Designed for seamless text-to-speech conversion across audiobooks, YouTube narrations, and e-learning with dynamic pause injection and instant cached delivery.
Click-to-Test Script Presets for SunHi
Click any preset to load the script and acoustic parameters directly into the live synthesizer below.
Literary Narrative Scene
“The morning mist slowly lifted from the harbor, [pause:short] revealing three merchant ships anchored in the bay. [pause:medium] Captain Reynolds studied the horizon through his spyglass, [pause:short] wondering what news they brought from home.”
Dynamic Commercial Hook
“Are you tired of monthly subscription fees just to generate speech? [pause:short] Open Text to Speech gives you studio-grade neural voices [pause:medium] with zero fees, [pause:short] zero sign-up, and instant download.”
Cadence & Pause Demonstration
“This is SunHi, [pause:short] speaking in natural Korean cadence. [pause:medium] Notice how bracket pause tags create clean breathing intervals [pause:long] without breaking phonetic realism.”
Test & Synthesize With SunHi
Type or paste your text below to hear SunHi speak in real time.
SunHi Acoustic Timbre & Formant Profile
Neural vocoder calibrated for Korean speech in South Korea. Produces authentic South Korea regional dialect cadence with natural phoneme transitions, zero robotic clipping, and smooth micro-pause decays.
165 Hz – 450 Hz (Bright Head Register)
F1 centered at 650 Hz, F2 at 1900 Hz delivering crisp vocal presence with minimal sibilance.
Natural 140–155 WPM conversational tempo with realistic micro-cadence breathing.
Polished, crystal-clear high-mid clarity calibrated for modern digital media and e-learning.
Recommended Production Scenarios for SunHi
Optimal media formats where SunHi delivers maximum listener engagement and authenticity.
Deep, fatigue-free tonal stability makes SunHi well-suited for novels, historical biographies, and sustained narrative audiobooks.
Crisp consonantal articulation ensures voice intelligibility when mixed over background music beds in YouTube, Reels, and corporate promos.
Clear, measured explanatory pacing helps adult learners absorb complex procedural training modules and technical concepts.
Authoritative presence and broadcast fidelity establish instant brand identity for weekly episodic shows and sponsor reads.
SunHi Modulation Cheat-Sheet
Recommended parameter ranges for pitch, speed, volume gain, and cadence syntax.
Pitch Modulation
-10 to +15 (Optimal: -2 for soothing, +4 for energetic)
Speed / Pacing
-25 to +25 (Optimal: -6 for audiobooks, +10 for YouTube Shorts, 0 for natural conversation)
Digital Gain
85% (meditation) to 130% (commercial voiceover cutting through music beds)
Pause Cadence Syntax
Supports [pause:short] (~0.5s), [pause:medium] (~1.0s), [pause:long] (~1.6s), and custom tags like [pause:1.5s].
Acoustic Engineering Specifications
| Sampling Frequency | Master Audio Bitrate | Audio Stems Layout | Zero-Buffer Latency | Cache Protocol |
|---|---|---|---|---|
| 24,000 Hz Studio Neural Synthesis (Transcodable to 44.1kHz / 48kHz) | 48 kbps MP3 (Streaming) / 768 kbps 16-bit Linear PCM WAV (Mastering) | Mono / Center Channel (Industry standard for voiceover dialog stems) | < 1ms from Tier 1 RAM LRU Cache / Instant Chunked Zero-Copy Stream | Deterministic SHA-256 Content-Addressable Storage |
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SunHi (voice-191) Frequently Asked Questions
Audio production, parameter adjustments, and commercial licensing details for SunHi.
SunHi is powered by a high-definition neural vocoder trained on authentic Korean speech in South Korea. It captures subtle vocal formants, realistic consonant transitions, and contextual pause cadences.
Yes! All audio synthesized with SunHi on OpenTTS is 100% royalty-free and cleared for commercial monetization, client work, e-learning, and broadcasts.
Use the interactive modulation controls to adjust pitch (-50 to +50) and speed (-50 to +50). For audiobooks or tutorials, a speed of -4 to -8 adds warmth; for YouTube shorts, +6 to +12 increases energy.
Yes. OpenTTS allows immediate download in streaming MP3 or lossless 16-bit PCM WAV (24kHz / 48kHz), OGG, AAC, and FLAC without requiring an account or API key.