---
title: vDSP_DFT_Direction.INVERSE
framework: accelerate
role: symbol
role_heading: Case
path: accelerate/vdsp_dft_direction/inverse
---

# vDSP_DFT_Direction.INVERSE

A constant that specifies an inverse transform.

## Declaration

```swift
case INVERSE
```

## Discussion

Discussion Use vDSP_DFT_Direction.INVERSE to transform a signal from the frequency domain to the time domain.

## See Also

### Constants

- [vDSP_DFT_Direction.FORWARD](accelerate/vdsp_dft_direction/forward.md)