---
title: Bandpass Unit Parameters
framework: audiotoolbox
role: collectionGroup
role_heading: API Collection
path: audiotoolbox/1390144-bandpass_unit_parameters
---

# Bandpass Unit Parameters

Parameters for the Bandpass unit.

## Topics

### Constants

- [kBandpassParam_Bandwidth](audiotoolbox/kbandpassparam_bandwidth.md)
- [kBandpassParam_CenterFrequency](audiotoolbox/kbandpassparam_centerfrequency.md)

## See Also

### Filters

- [Audio Unit Filter Subtypes](audiotoolbox/1584153-audio-unit-filter-subtypes.md)
- [AUHipass Parameters](audiotoolbox/1389948-auhipass_parameters.md)
- [AULowpass Parameters](audiotoolbox/1389999-aulowpass_parameters.md)
- [AULowShelf Parameters](audiotoolbox/1389995-aulowshelf_parameters.md)
- [AUHighShelfFilter Parameters](audiotoolbox/1389967-auhighshelffilter_parameters.md)
- [AUNBandEQ Filter Types](audiotoolbox/1389965-aunbandeq_filter_types.md)
- [AUNBandEQ Property IDs](audiotoolbox/1534022-aunbandeq-property-ids.md)
- [AUNBandEQ Parameters](audiotoolbox/1389745-aunbandeq-parameters.md)