> ## 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.

# SE with full-fidelity

> Real-time speech enhancement with bandwidth extension to 24kHz ultra-fidelity audio

The Speech Enhancement Ultra (`SE2.2`) model delivers full-fidelity speech enhancement with bandwidth extension. It takes 16kHz input and outputs ultra-fidelity 24kHz audio, performing all the restorative capabilities of SE Standard while extending bandwidth for a richer, more natural listening experience — designed for environments with larger CPU budgets.

## Hear the Difference

### Various Accents

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

    <video controls={true} src="https://d3uqx5l8cluzaz.cloudfront.net/SE2.2_various_accents.wav" style={{ width:"100%",height:"54px" }} />
  </div>

  <div style={{ flex:1, paddingLeft:"16px" }}>
    **After** · Enhanced with SE Ultra

    <video controls={true} src="https://d3uqx5l8cluzaz.cloudfront.net/SE2.2_output_various_accents_SE2.2.wav" style={{ width:"100%",height:"54px" }} />
  </div>
</div>

### Codec Degradation

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

    <video controls={true} src="https://d3uqx5l8cluzaz.cloudfront.net/SE2.2_codec__female1_opus_6kbps.wav" style={{ width:"100%",height:"54px" }} />
  </div>

  <div style={{ flex:1, paddingLeft:"16px" }}>
    **After** · Enhanced with SE Ultra

    <video controls={true} src="https://d3uqx5l8cluzaz.cloudfront.net/SE2.2_output_codec__female1_opus_6kbps_SE2.2.wav" style={{ width:"100%",height:"54px" }} />
  </div>
</div>

### Packet Loss

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

    <video controls={true} src="https://d3uqx5l8cluzaz.cloudfront.net/SE2.1_packet_loss__female1_40p.wav" style={{ width:"100%",height:"54px" }} />
  </div>

  <div style={{ flex:1, paddingLeft:"16px" }}>
    **After** · Enhanced with SE Ultra

    <video controls={true} src="https://d3uqx5l8cluzaz.cloudfront.net/SE2.2_output_packet_loss__female1_40p_SE2.2.wav" style={{ width:"100%",height:"54px" }} />
  </div>
</div>

### Overlapping Speech

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

    <video controls={true} src="https://d3uqx5l8cluzaz.cloudfront.net/SE2.1_overlapped__male1.wav" style={{ width:"100%",height:"54px" }} />
  </div>

  <div style={{ flex:1, paddingLeft:"16px" }}>
    **After** · Enhanced with SE Ultra

    <video controls={true} src="https://d3uqx5l8cluzaz.cloudfront.net/SE2.2_output_overlapped__male1_SE2.2.wav" style={{ width:"100%",height:"54px" }} />
  </div>
</div>

### Background Noise

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

    <video controls={true} src="https://d3uqx5l8cluzaz.cloudfront.net/SE2.2_signal__female1.wav" style={{ width:"100%",height:"54px" }} />
  </div>

  <div style={{ flex:1, paddingLeft:"16px" }}>
    **After** · Enhanced with SE Ultra

    <video controls={true} src="https://d3uqx5l8cluzaz.cloudfront.net/SE2.2_output_signal__female1_SE2.2.wav" style={{ width:"100%",height:"54px" }} />
  </div>
</div>

## Key Features

<CardGroup cols={2}>
  <Card title="Bandwidth Extension" icon="arrow-up-right-dots">
    Extends audio to ultra-fidelity 24kHz for a richer, more natural voice experience beyond standard telephony quality.
  </Card>

  <Card title="Removes Noise and Speech" icon="volume-slash">
    Eliminates background noises and background speech while preserving the primary speaker.
  </Card>

  <Card title="Restores Voice Fidelity" icon="microphone">
    Restores foreground voice to high-fidelity, enhancing clarity, articulation, energy, and vocal presence.
  </Card>

  <Card title="Corrects Degradation" icon="wrench">
    Fixes codec degradation, packet loss from poor connections, reverb, and room acoustics.
  </Card>
</CardGroup>

## Specifications

**Model ID:** `SE2.2`<br />**Category:** Speech Enhancement<br />**Type:** Human ↔ Human

<CardGroup cols={2}>
  <Card title="160ms" icon="bolt">
    Streaming latency
  </Card>

  <Card title="16kHz → 24kHz" icon="waveform-lines">
    Input / Output sample rate
  </Card>
</CardGroup>

<Note>
  Remote Server currently outputs at 16kHz. Full 24kHz output support coming soon.
</Note>

## Use Cases

<CardGroup cols={2}>
  <Card title="Contact Centers" icon="headset">
    Premium voice quality for agent-customer calls where clarity and presence matter most.
  </Card>

  <Card title="Conferencing" icon="users">
    Ultra-fidelity audio for video conferences and virtual meetings.
  </Card>

  <Card title="Voice Recording" icon="circle-dot">
    Restore and upscale archived or degraded voice recordings to studio-like quality.
  </Card>

  <Card title="Telemedicine" icon="stethoscope">
    Crystal-clear audio for doctor-patient consultations where every word counts.
  </Card>
</CardGroup>

<Note>
  **Known Limitations**

  * Speaker identity may occasionally differ slightly from the original.
  * Although pronunciations are unchanged, there may be a subtle perception of an Americanized accent.
  * Requires a larger CPU budget compared to SE Standard (`SE2.1`).
</Note>

## Code Example

Create an audio processor with the SE Ultra model:

```python theme={null}
audio_params = sanas_remote_sdk.AudioParams()
audio_params.modelName = "SE2.2"
audio_params.sampleRate = 16000

processor, create_result = sdk.CreateAudioProcessor(audio_params)
```

<Info>
  Input sample rate: 16 kHz. The model outputs 24 kHz ultra-fidelity, but Sanas Cloud downsamples it to 16 kHz to match the input sample rate.
</Info>

For full setup and initialization, see the [Quick Start →](/Docs/Getting-Started/Quick-Start)

## Next Steps

<CardGroup cols={3}>
  <Card title="Quick Start" icon="rocket" href="/Docs/Getting-Started/Quick-Start">
    Get up and running with Sanas SDK in under 5 minutes.
  </Card>

  <Card title="API Reference" icon="book" href="/API-Reference/Overview">
    Full SDK documentation for classes, enums, and callbacks.
  </Card>

  <Card title="Processing Multiple Streams" icon="layer-group" href="/Docs/Tutorials/Processing-Multiple-Streams">
    Handle multiple concurrent audio streams.
  </Card>
</CardGroup>