Voice AI Indistinguishable from Human Speech. Real-Time Latency Under 300ms.
Synthesize natural human speech with emotional depth, deploy conversational phone agents, and clone voices with cryptographic verification. Engineered for global languages and the nuances of Bengali speech.
40ms ASR + 120ms LLM + 110ms Sono Streaming TTS
24-bit uncompressed lossless linear PCM export
Word Error Rate benchmarked on real-world Dhaka audio
Dedicated GPU clusters across SG, Frankfurt & US-East
Turn Written Text into Expressive, Studio-Master Speech.
Control emotion, pacing, breath intervals, and pitch inflection with granular precision. Synthesize audiobooks, video narrations, and in-game dialogue in seconds.
Acoustic Pillars of Ultra-Realistic Speech
Modulate vocal delivery from calm corporate narrations to dramatic readings with natural vocal fry, laughter, and breath intervals.
Full support for W3C-compliant PLS dictionaries and inline International Phonetic Alphabet (IPA) tags for complex brand names and medical jargon.
Multi-speaker engine tracks character dialogue across 500+ page manuscripts with zero timbre drift or energy decay.
Stream audio chunks as fast as LLMs produce tokens. First-chunk playback begins in the listener's ear before sentence two generates.
Conversational Voice Agents That Speak and Listen Like Humans.
Sub-300ms glass-to-glass latency, natural turn-taking, intelligent interruption handling, and native SIP/PBX integration for customer service phone lines.
Agent: “Welcome to Premier Medical. How may I assist you today?”
Caller: “I need to move my appointment to Thursday at 4 PM.”
Agent: “Done! Rescheduled for Thursday at 4:00 PM. A confirmation text was sent.”
Conversational Audio Capabilities
Sono listens continuously while speaking. When a caller interrupts, audio playback halts in under 50ms without audio collisions.
Inserts natural acoustic confirmations ('Got it, checking that now') while fetching records, eliminating awkward phone silence.
Connect directly to Twilio Voice, Asterisk, FreeSWITCH, Vonage, and Genesys via standard SIP URI forwarding and WebRTC.
Agents query SQL databases, verify caller identity via SMS OTP, mutate order tables, and schedule calendar appointments mid-call.
Clone Any Voice with 60 Seconds of Audio. Protected by Cryptographic Ownership.
Replicate authentic vocal timbre, accent, and emotional resonance for personal agents or custom brand identities. Backed by mandatory voice captcha verification and neural watermarking.
“I authorize Zunn Sono to generate a synthetic model of my voice today, October 17, 2026. Security Passcode: 710-928.”
Every synthesized second embeds an imperceptible, tamper-evident cryptographic watermark. Origin: Zunn Sono | Verified Owner: Validated.
Ethical Voice Replication Architecture
Upload a clean 60-second audio sample. Sono's zero-shot acoustic encoder extracts deep vocal embeddings for immediate speech synthesis.
Dedicated neural checkpoint fine-tuned on 30+ minutes of studio recordings, capturing extreme vocal dynamics, whispers, and acting.
Zero unauthorized cloning. Speakers must read a dynamic, cryptographically signed challenge aloud to prove live consent.
Every generated second embeds an imperceptible, tamper-evident neural watermark for instantaneous provenance detection.
Speech-to-Text That Understands Accents, Jargon, and Background Noise.
Transcribe audio in real time with sub-150ms streaming latency. Unrivaled accuracy for complex Bengali conjuncts, mixed English code-switching, and multi-speaker conferences.
“You may proceed with the witness testimony, Counselor.”
Speech-to-Text Intelligence Features
Stream audio over WebSockets and receive structured JSON transcription tokens with interim hypotheses in milliseconds.
Trained on authentic conversational South Asian speech, beating global models on real-world noisy audio environments.
Automatically separates multiple speakers in conference calls and podcasts, providing millisecond-accurate word timestamps.
Converts phonetic speech into readable prose with proper capitalization, dates, and Bengali currency symbols ('৳৫০০').
Integrate World-Class Voice AI with 10 Lines of Code.
Official SDKs for Python, Node.js, and Next.js. Bi-directional WebSockets for real-time streaming, comprehensive webhooks, and predictable per-character pricing.
import { SonoClient } from "@zunn/sono-sdk";
const sono = new SonoClient({ apiKey: process.env.SONO_API_KEY });
// Stream generative speech with real-time audio playback
const audioStream = await sono.textToSpeech.stream({
voiceId: "farhan-conversational-bn",
text: "স্বাগতম! যুন সোনোর এপিআই ব্যবহার করে অ্যাপ্লিকেশনে যোগ করুন বাস্তবসম্মত ভয়েস।",
outputFormat: "mp3_44100_128",
voiceSettings: { stability: 0.75, similarityBoost: 0.85 }
});
audioStream.pipe(responseStream);Developer Infrastructure Specifications
Stream raw PCM audio frames over persistent WebSockets, eliminating HTTP handshake latency for live voice agents.
Type-safe client libraries for TypeScript/Node.js, Python (uv-compatible), and Go with built-in retry and streaming helpers.
Automate high-volume audiobook conversion or transcription pipelines with HMAC-signed webhooks upon completion.
Track character counts and streaming minutes in real time. Set budget hard limits to ensure total cost predictability.
Proven Across Media Production, Gaming, and Scaled Telephony.
Discover how leading organizations leverage Zunn Sono's generative audio models to produce rich content faster and resolve customer inquiries over the phone.
Automated Customer Service Telephony
Long customer hold times, expensive offshore BPO staffing, high IVR abandonment rates.
- Sub-300ms Conversational Voice Agents connected directly to existing SIP telephony trunks.
- Natural multilingual turn-taking in English, Bengali, and regional dialects.
- Real-time integration with CRM databases and order mutation APIs.
- 55% First-Call Resolution on routine inquiries
- Zero hold time during seasonal traffic surges
- 60% reduction in per-minute telephone support costs
Industry Solutions Matrix
Deflect 50%+ of routine inquiries with fluid phone agents that handle order status, cancellations, and appointment booking.
Convert 500-page book manuscripts into multi-speaker audiobooks in hours, keeping character voice timbre completely consistent.
Empower game non-player characters to speak contextual dialogue dynamically in real time without pre-recorded voice clips.
Enable individuals with vocal impairments or ALS to communicate using their authentic digital voice twins.
Pure, Unedited Audio. Hear the Difference.
Listen to raw studio exports synthesized with Zunn Sono across genres, accents, and emotional deliveries. Zero post-processing, zero artificial enhancements.
Farhan
Dhaka Conversational · Age 28Nadia
Standard Formal · Age 34Julian
Global Neutral Baritone · Age 32Priya
Urban Dhaka Code-Switching · Age 26Dr. Maya
South Asian Professional · Age 40Thorne
Cinematic Dramatic · Age 55Enterprise-Scale Voice AI with Dedicated Global Infrastructure.
Deploy dedicated GPU clusters, run on-premises in air-gapped environments, and maintain strict data residency with custom SLAs tailored for telecommunications and banking.
Dedicated Cloud Cluster
Multi-Tenant Cloud IsolationEnterprise Voice Infrastructure Guarantees
Reserved NVIDIA H100/A100 compute lanes with zero-queue concurrency guarantees, handling 10,000+ concurrent calls.
Run Sono inside sovereign clouds or air-gapped bare-metal datacenters with zero outbound network calls.
Fine-tune foundational models on historical enterprise call center recordings with private encrypted weights.
Signed Business Associate Agreements (BAA), end-to-end TLS 1.3 encryption, and automated zero-data-retention pipelines.
Zero Unauthorized Voice Cloning. Provenance Protection in Every Stream.
Enterprise audio security built from first principles: dynamic voice captchas, neural audio watermarking, encrypted biometric embeddings, and zero-data-retention compliance.
Biometric vector embeddings are encrypted using AES-256-GCM. We never retain customer audio data or use voice clones to train public foundation models.
Biometric Safety & Provenance Pillars
Clone creation requires reading a dynamic, time-sensitive cryptographic challenge aloud to guarantee live consent.
All synthesized audio embeds an imperceptible, tamper-evident acoustic watermark that survives re-recording and compression.
Developer and enterprise audio bytes are processed in volatile memory only and never stored to train public models.
Vocal vectors are encrypted using AES-256-GCM and customer-managed keys (CMK) with strict tenant isolation.
Clear Answers to Technical, Commercial, and Ethical Questions.
Everything you need to know about our audio generation latency, commercial voice licensing, cryptographic verification, and Bengali linguistic accuracy.