## Speech Enhancement Ultra (SE2.2) Model

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

**Before** · Original audio  
**After** · Enhanced with SE Ultra

### Codec Degradation

**Before** · Original audio  
**After** · Enhanced with SE Ultra

### Packet Loss

**Before** · Original audio  
**After** · Enhanced with SE Ultra

### Overlapping Speech

**Before** · Original audio  
**After** · Enhanced with SE Ultra

### Background Noise

**Before** · Original audio  
**After** · Enhanced with SE Ultra

## Key Features

### Bandwidth Extension

Extends audio to ultra-fidelity 24kHz for a richer, more natural voice experience beyond standard telephony quality.

### Removes Noise and Speech

Eliminates background noises and background speech while preserving the primary speaker.

### Restores Voice Fidelity

Restores foreground voice to high-fidelity, enhancing clarity, articulation, energy, and vocal presence.

### Corrects Degradation

Fixes codec degradation, packet loss from poor connections, reverb, and room acoustics.

## Specifications

**Model ID:** `SE2.2`  
**Category:** Speech Enhancement  
**Type:** Human ↔ Human

## 160ms

Streaming latency

## 16kHz → 24kHz

Input / Output sample rate

Remote Server currently outputs at 16kHz. Full 24kHz output support coming soon.

## Use Cases

### Contact Centers

Premium voice quality for agent-customer calls where clarity and presence matter most.

### Conferencing

Ultra-fidelity audio for video conferences and virtual meetings.

### Voice Recording

Restore and upscale archived or degraded voice recordings to studio-like quality.

### Telemedicine

Crystal-clear audio for doctor-patient consultations where every word counts.

**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`).

## Code Example

Create an audio processor with the SE Ultra model:

```
audio_params = sanas_remote_sdk.AudioParams()
audio_params.modelName = "SE2.2"
audio_params.sampleRate = 16000

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

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.

For full setup and initialization, see the Quick Start.

## Next Steps

- **Quick Start:** Get up and running with Sanas SDK in under 5 minutes.
- **API Reference:** Full SDK documentation for classes, enums, and callbacks.
- **Processing Multiple Streams:** Handle multiple concurrent audio streams.