MIC_ARRAY_MODE Enumeration

Specifies how the voice capture DSP performs microphone array processing. This enumeration is used with the MFPKEY_WMAAECMA_FEATR_MICARR_MODE property.

Syntax

typedef enum  {
  MICARRAY_SINGLE_CHAN   = 0x0000,
  MICARRAY_SIMPLE_SUM    = 0x0100,
  MICARRAY_SINGLE_BEAM   = 0x0200,
  MICARRAY_FIXED_BEAM    = 0x0400,
  MICARRAY_EXTERN_BEAM   = 0x0800 
} MIC_ARRAY_MODE;

Constants

• MICARRAY_SINGLE_CHAN
  Use a single channel. Specify the channel number in the last 8 bits of the value.

• MICARRAY_SIMPLE_SUM
  Sum all of the channels.

• MICARRAY_SINGLE_BEAM
  Use beam forming with a beam selected by the DSP. After processing starts, you can query which beam was selected by reading the MFPKEY_WMAAECMA_FEATR_MICARR_BEAM property.

• MICARRAY_FIXED_BEAM
  Use beam forming with the center beam.

• MICARRAY_EXTERN_BEAM
  Use beam forming with a beam selected by the application. If you set this value, set the MFPKEY_WMAAECMA_FEATR_MICARR_BEAM property to specify the beam.

Requirements

See Also

Enumeration Types

Using the Voice Capture DSP

Voice Capture

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Build date: 4/7/2010