---
title: vDSP_desampD
framework: accelerate
role: symbol
role_heading: Function
path: accelerate/vdsp_desampd
---

# vDSP_desampD

Performs double-precision FIR filtering with decimation and antialiasing.

## Declaration

```occ
extern void vDSP_desampD(const double *__A, vDSP_Stride __DF, const double *__F, double *__C, vDSP_Length __N, vDSP_Length __P);
```

## Mentioned in

Resampling a signal with decimation

## Discussion

Discussion This is the same as vDSP_desamp, except for the types of the A, F, and C parameters.

## See Also

### Real Vectors

- [Resampling a signal with decimation](accelerate/resampling-a-signal-with-decimation.md)
- [vDSP_desamp](accelerate/vdsp_desamp.md)