ACX_MICROPHONE_CONFIG structure (acxpin.h)

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The ACX_MICROPHONE_CONFIG structure is used to configure a microphone.

Syntax

typedef struct _ACX_MICROPHONE_CONFIG {
  ULONG                                     Size;
  ULONG                                     Flags;
  LONG                                      MicrophoneSnrDB;
  LONG                                      MicrophoneSensitivityDB;
  ACXMICARRAYGEOMETRY                       MicArrayGeometry;
  PACX_INTERLEAVED_AUDIO_FORMAT_INFORMATION InterleavedFormat;
} ACX_MICROPHONE_CONFIG, *PACX_MICROPHONE_CONFIG;

Members

Size

The size of all of the data in the ACX_MICROPHONE_CONFIG structure in bytes.

Flags

A combination of values from the ACX_MICROPHONE_CONFIG_FLAGS enum that describe the microphone.

MicrophoneSnrDB

A 16.16 fixed point decibel (dB) value specifying the microphone's signal-to-noise ratio. Setting this to LONG_MIN_VALUE means that this field is unsupported.

MicrophoneSensitivityDB

A 16.16 fixed point decibel (dB) value specifying the microphone's sensitivity. Setting this to LONG_MIN_VALUE means that this field is unsupported.

MicArrayGeometry

An optional ACX_MIC_ARRAY_GEOMETRY structure that describes the geometry of the microphone if it is a microphone array.

InterleavedFormat

An optional pointer to an ACX_INTERLEAVED_AUDIO_FORMAT_INFORMATION structure that specifies how loopback audio is interleaved with the microphone audio.

Remarks

The ACX_MICROPHONE_CONFIG structure should be assigned to the MicrophoneConfig member of the ACX_PIN_CONFIG structure and AcxPinConfigMicrophoneConfigSpecified should be included in the Flags member of the ACX_PIN_CONFIG structure.

To initialize an ACX_MICROPHONE_CONFIG structure, your driver should call ACX_MICROPHONE_CONFIG_INIT.

ACX requirements

Minimum ACX version: 1.0

For more information about ACX versions, see ACX version overview.

Requirements

Requirement Value
Header acxpin.h

See also