The purpose of the NSP Center Extraction is to estimate the similar content in from two audio input signals (Left and Right) and provide an output with the estimated center channel.
The NspCenterExtraction (Natural Surround Processing Center Extraction) audio object receives a two-channel signal (Left and Right, L and R) and produces five output signals.
- 1 – Center (C)
- 2 – Residual L (L minus C)
- 3 – Residual R (R minus C)
- 4 – Delayed Left (L)
- 5 – Delayed Right (R)
An example of a signal flow design.

The first output signal is the estimated C channel.
Features
- Available in the Immersive Audio section of GTT
- Supports sample rates: 11025, 12000, 22050, 24000, 44100, 48000 and 96000 Hz
- Supports block lengths: 32, 64, 128 and 256.
- Supports both Win64 and GUL platforms.
NSP Center Extraction Properties

| Properties | Description |
| Display Name | Display name of the NSP Center Extraction audio object in signal flow design. It can be changed based on the intended usage of the object. |
Input and Output: The number of input channels is fixed to 2 and the number of output channels is fixed to 5.
Mode
The audio object doesn’t support any mode.
Additional Parameters
The audio object doesn’t have any additional parameters.
Tuning Parameters
The audio object doesn’t have any tuning parameters.
Control Parameters
The audio object doesn’t have any control parameters.
Native Panel
NSP Center Extraction audio object does not support native panel.