> ## 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.

# Agentic SE Voice Isolation (Telephony)

> ASR-optimized speech enhancement for telephony audio pipelines

The Voice Isolation Telephony Agentic SE (`AGENTIC_VI_GT_SE`) model is a telephony-optimized variant of the [`AGENTIC_VI_G_SE`](/Docs/Models/Human-Machine/Agentic-NC-Voice-Isolation) model, purpose-built for 8kHz telephony audio. It improves Automatic Speech Recognition (ASR) accuracy by isolating the primary speaker and removing background noise and voices from narrowband telephony streams.

<Note>
  **Which model should you use?**

  * **16kHz input:** Use [`AGENTIC_VI_G_SE`](/Docs/Models/Human-Machine/Agentic-NC-Voice-Isolation) (General)
  * **8kHz input:** Use `AGENTIC_VI_GT_SE` (Telephony)
</Note>

## Hear the Difference

Removes environmental background noise and distant human voices from telephony audio for complete voice isolation, ensuring ASR processes only the primary speaker's input.

<div style={{ display:"flex", gap:"0", width:"100%" }}>
  <div style={{ flex:1, paddingRight:"16px", borderRight:"1px solid #E3E3E3" }}>
    **Before** · Primary speaker + background noise

    <video controls={true} src="https://d3uqx5l8cluzaz.cloudfront.net/Agentic_NC_VIG_Input.wav" style={{ width:"100%",height:"54px" }} />
  </div>

  <div style={{ flex:1, paddingLeft:"16px" }}>
    **After** · Primary speaker only

    <video controls={true} src="https://d3uqx5l8cluzaz.cloudfront.net/Agentic_NC_VI_GT_Output.wav" style={{ width:"100%",height:"54px" }} />
  </div>
</div>

### Performance Benchmarks

The following transcripts are generated from the audio samples above. The **Oracle Transcript** is the ground truth — the actual words spoken. The **Source Transcript** is the raw audio passed directly through the ASR system. The **Sanas Transcript** is the audio processed through the Sanas model first, then passed through the same ASR system. The **Word Error Rate (WER)** is calculated relative to the Oracle Transcript (0% WER), based on insertion, deletion, and substitution errors — bolded words below indicate these errors. WER percentage for each is shown at the bottom of the table.

#### Test Environment

* **Background**: Contact center with background office chatter and ambient noise
* **ASR System**: Deepgram Nova3 Streaming

| Oracle Transcript                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | Source Transcript                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | Sanas Transcript                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| good morning welcome to sun bank fraud prevention desk this is partha speaking how can i assist i completely understand let's check your account immediately uh for verification may i have the last four digits of your card thank you i will review your account i see an o t p multiple request attempted today but no transaction went through did anyone recently ask for your o t p or card details good please remember we will never ask for your o t p to keep your account safe i recommend blocking the card immediately and issuing a replacement would you like me to proceed done your card has been blocked successfully your replacement card will reach your uh reach your registered address in three to five business days okay yes i'm also enabling security alerts for your account you are welcome anything else i can help you with today | good morning welcome to sunbank fraud prevention desk this is speaking how can i assist i completely understand let's check your account immediately for verification may i have the last four digits of your card thank you i will **remove the** account **i'll** see a **particular** request your replacement card will reach your reach your registered address three to five business days enabling security alerts for your account **will you write me the change this to you** you **were** welcome anything else i can help you with **changes to your account** | good morning welcome to sun bank fraud prevention desk this is **pasa** speaking how can i assist i completely understand **there's** check your account **in the details** for verification may i have the last **digits** of your card thank you i will **mhmm** your account attempted today **the new** transaction went through did anyone recently ask for **the otp of paralytus** good remember we will never ask for **the** o t p to keep your account safe i recommend blocking the card immediately and **issue you had a placement** would you like me to **give sir** your card has been blocked successfully your replacement card **has** reach**ed** your reach**ed** your registered address in three to **5%** i'm also enabling security **alert** for your account you are welcome anything else i can help you with **sir** |