Namespace Microsoft::CognitiveServices::Speech::Audio

Summary

Members	Descriptions
enum PresetMicrophoneArrayGeometry	Types of preset microphone array geometries. See Microphone Array Recommendations for more details.
enum MicrophoneArrayType	Types of microphone arrays.
enum SpeakerReferenceChannel	Defines speaker reference channel position in input audio.
enum AudioStreamContainerFormat	Defines supported audio stream container format. Changed in version 1.4.0.
enum AudioStreamWaveFormat	Represents the format specified inside WAV container.
class Audio::AudioConfig	Represents audio input or output configuration. Audio input can be from a microphone, file, or input stream. Audio output can be to a speaker, audio file output in WAV format, or output stream.
class Audio::AudioInputStream	Represents audio input stream used for custom audio input configurations.
class Audio::AudioOutputStream	Represents audio output stream used for custom audio output configurations. Updated in version 1.7.0.
class Audio::AudioProcessingOptions	Represents audio processing options used with audio config class.
class Audio::AudioStreamFormat	Class to represent the audio stream format used for custom audio input configurations. Updated in version 1.5.0.
class Audio::PullAudioInputStream	Pull audio input stream class.
class Audio::PullAudioInputStreamCallback	An interface that defines callback methods for an audio input stream.
class Audio::PullAudioOutputStream	Represents memory backed pull audio output stream used for custom audio output. Updated in version 1.7.0.
class Audio::PushAudioInputStream	Represents memory backed push audio input stream used for custom audio input configurations.
class Audio::PushAudioOutputStream	Push audio output stream class. Added in version 1.4.0.
class Audio::PushAudioOutputStreamCallback	An interface that defines callback methods for an audio output stream. Updated in version 1.7.0.
struct Audio::MicrophoneArrayGeometry	Represents the geometry of a microphone array.

Members

enum PresetMicrophoneArrayGeometry

Values	Descriptions
Uninitialized	Indicates that no geometry specified. Speech SDK will determine the microphone array geometry.
Circular7	Indicates a microphone array with one microphone in the center and six microphones evenly spaced in a circle with radius approximately equal to 42.5 mm.
Circular4	Indicates a microphone array with one microphone in the center and three microphones evenly spaced in a circle with radius approximately equal to 42.5 mm.
Linear4	Indicates a microphone array with four linearly placed microphones with 40 mm spacing between them.
Linear2	Indicates a microphone array with two linearly placed microphones with 40 mm spacing between them.
Mono	Indicates a microphone array with a single microphone.
Custom	Indicates a microphone array with custom geometry.

Types of preset microphone array geometries. See Microphone Array Recommendations for more details.

enum MicrophoneArrayType

Values	Descriptions
Linear	Indicates that the microphone array has microphones in a straight line.
Planar	Indicates that the microphone array has microphones in a plane.

Types of microphone arrays.

enum SpeakerReferenceChannel

Values	Descriptions
None	Indicates that the input audio does not have a speaker reference channel.
LastChannel	Indicates that the last channel in the input audio corresponds to the speaker reference for echo cancellation.

Defines speaker reference channel position in input audio.

enum AudioStreamContainerFormat

Values	Descriptions
OGG_OPUS	Stream ContainerFormat definition for OGG OPUS.
MP3	Stream ContainerFormat definition for MP3.
FLAC	Stream ContainerFormat definition for FLAC. Added in version 1.7.0.
ALAW	Stream ContainerFormat definition for ALAW. Added in version 1.7.0.
MULAW	Stream ContainerFormat definition for MULAW. Added in version 1.7.0.
AMRNB	Stream ContainerFormat definition for AMRNB. Currently not supported.
AMRWB	Stream ContainerFormat definition for AMRWB. Currently not supported.
ANY	Stream ContainerFormat definition for any other or unknown format.

Defines supported audio stream container format. Changed in version 1.4.0.

enum AudioStreamWaveFormat

Values	Descriptions
PCM	AudioStreamWaveFormat definition for PCM (pulse-code modulated) data in integer format.
ALAW	AudioStreamWaveFormat definition A-law-encoded format.
MULAW	AudioStreamWaveFormat definition for Mu-law-encoded format.

Represents the format specified inside WAV container.