> ## Documentation Index > Fetch the complete documentation index at: https://developer.sanas.ai/llms.txt > Use this file to discover all available pages before exploring further. # Models Overview Explore Sanas's Human ↔ Human and Human ↔ Machine models and their capabilities. Sanas delivers world-class AI models across two categories: Human ↔ Human and Human ↔ Machine. Sanas currently offers Noise Cancellation and Speech Enhancement capabilities. Accent Translation, Language Translation, and Speech Intelligence coming soon. ## Who is listening? You need a **Human ↔ Human** model. Voice quality and naturalness matter. You need a **Human ↔ Machine** model. Relative Word Error Rate (RWERR) reduction and ASR accuracy matter. ## Agentic Speech Enhancement Models | Model | Use Case | Description | Best For: | | ------------------- | ------------------------------------------------------- | ---------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------ | | AGENTIC\_VI\_G\_SE | Agentic — Voice Isolation (General) — Human ↔ Machine | Removes all background noise and non-primary voices for complete speaker isolation | Voice agents, IVR, and phone bots that need a single, noise-free speaker isolated from everything else on the line | | AGENTIC\_VI\_GT\_SE | Agentic — Voice Isolation (Telephony) — Human ↔ Machine | Telephony-optimized variant of VI\_G for 8kHz narrowband audio | Telephony-based voice agents and IVR in contact centers running on narrowband (8kHz) call audio | | AGENTIC\_ST\_SE | Agentic — Standard — Human ↔ Machine | Removes background noise while keeping all human speech audible | Multi-party calls or meeting/triage agents where overheard background speech still adds useful context | ## Speech Enhancement Models | Model | Use Case | Description | Best For: | | --------- | ----------------------------------------- | ----------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------- | | SE1.2 | SE Enhanced (Telco) — Human ↔ Human | Enhances voice quality for narrowband telephony audio and adds comfort noise; mainly intended for Telco use cases | Telco and carrier-grade voice applications needing lightweight enhancement with natural-sounding comfort noise | | SE2.1 | SE Standard — Human ↔ Human | Restores and enhances voice quality for telephony audio, outputting 8kHz | High-volume contact centers and IVR systems needing lightweight, low-latency voice cleanup on telephony audio | | SE2.2 | SE Full-Fidelity — Human ↔ Human | Full-Fidelity speech enhancement with bandwidth extension to 24kHz | Premium contact centers, conferencing, and telemedicine where full-fidelity audio quality is essential | | VI\_G\_SE | Voice Isolation (General) — Human ↔ Human | Isolates intended speech by removing background noise and voices | Contact center agents, conferencing, and live/gaming voice chat where listeners need clean, isolated speech | ## Accent Translation Models | Model | Use Case | Description | Best For: | | ----- | ---------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------ | | AT5.2 | Accent Translation — Human ↔ Human | Accent Translation modifies global accents in real-time, allowing your teams to be instantly understood while preserving what makes every voice unique. | Contact centers and global teams who need instant, natural-sounding accent translation in meetings and daily calls | ## Language Translation | API | Use Case | Description | Best For: | | ----------------------------------------- | ----------------------------------- | -------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------- | | [LT](/Docs/Language-Translation/Overview) | Language Translation— Human ↔ Human | Real-time language translation that preserves your speakers' voices, tone, and intent. | Cross-language customer support and international meetings that need real-time translation while preserving the speaker's voice and tone | Hear samples and learn more about each model's specifications, use cases, and code examples below. ## Human ↔ Human ### Speech Enhancement · Enhanced (Telco) **SE1.2** — Enhances voice quality for narrowband telephony audio and adds comfort noise. Mainly intended for Telco use cases. ### Speech Enhancement · Standard **SE2.1** — Restores and enhances voice quality for telephony audio. Low CPU footprint. * Latency: 120ms * Sample rate: 16kHz → 8kHz ### Speech Enhancement · with full-fidelity **SE2.2** — Full-fidelity speech enhancement with bandwidth extension to ultra-fidelity 24kHz. * Latency: 160ms * Sample rate: 16kHz → 24kHz ### Speech Enhancement · Voice Isolation (General) **VI\_G\_SE** — Isolates intended speech by removing background noise and voices. Optimized for human listeners. * Latency: \~40ms * Sample rate: Up to 24kHz * Range: Primary speaker within \~1m ### Accent Translation **AT5.2** — Accent Translation modifies global accents in real-time, allowing your teams to be instantly understood while preserving what makes every voice unique. * Latency: \~200ms ### Language Translation [**LT**](/Docs/Language-Translation/Overview) — Real-time language translation that preserves your speakers' voices, tone, and intent. * Latency: \~3-5s ## Human ↔ Machine ### Agentic Speech Enhancement · Voice Isolation (General) **AGENTIC\_VI\_G\_SE** — Removes background noise and distant voices for complete voice isolation of the primary speaker's audio stream. * Latency: \~100ms * Sample rate: 16kHz * Relative Word Error Rate Reduction (RWERR): 5–30% (average) ### Agentic Speech Enhancement · Voice Isolation (Telephony) **AGENTIC\_VI\_GT\_SE**— Telephony-optimized variant of Voice Isolation for 8kHz narrowband audio. * Latency: \~100ms * Sample rate: 8kHz * Relative Word Error Rate Reduction (RWERR): 5–30% (average) ### Agentic Speech Enhancement · Standard **AGENTIC\_ST\_SE** — Removes background noise while preserving all human speech for multi-speaker environments. * Latency: \~100ms * Sample rate: 16kHz * Relative Word Error Rate Reduction (RWERR): 5–30% (average)