Struct AudioFrame

Single raw uncompressed audio frame.

Namespace: Microsoft.MixedReality.WebRTC
Assembly: Microsoft.MixedReality.WebRTC.dll
Syntax
public struct AudioFrame
Remarks

The use of ref struct is an optimization to avoid heap allocation on each frame while having a nicer-to-use container to pass a frame accross methods.

Fields

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audioData

Buffer of audio samples for all channels.

Declaration
public IntPtr audioData
Field Value
Type Description
IntPtr
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bitsPerSample

Number of bits per sample, generally 8 or 16.

Declaration
public uint bitsPerSample
Field Value
Type Description
UInt32
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channelCount

Number of audio channels.

Declaration
public uint channelCount
Field Value
Type Description
UInt32
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sampleCount

Number of consecutive samples in the audio data buffer. WebRTC generally delivers frames in 10ms chunks, so for e.g. a 16 kHz sample rate the sample count would be 1000.

Declaration
public uint sampleCount
Field Value
Type Description
UInt32
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sampleRate

Sample rate, in Hz. Generally in the range 8-48 kHz.

Declaration
public uint sampleRate
Field Value
Type Description
UInt32