1.      Definition

Audio Data entering an AIW or AIM.

 2      Functional Requirements

Input Audio shall have a Qualifier for use in different application domains.

In the Connected Autonomous Vehicle domain, Microphone Array is used to:

  1. Provide the location of sound sources.
  2. Enable extraction of speech addressed to CAV by humans
  3. Incorporate outdoor Audio information into the Basic Environment Representation.
  4. Remove unwanted noise from the passenger cabin.

3      Syntax


 4       Semantics

Label Size Description
Header N1 Bytes Input Audio Header
– Standard 9 Bytes The characters “CAE-IAU-V”
– Version N2 Bytes Major version – 1 or 2 characters
– Dot-separator 1 Byte The character “.”
– Subversion N3 Byte Minor version – 1 or 2 characters
MInstanceID N4 Bytes ID of the Virtual Space.
InputAudioID N5 Bytes ID of Input Audio.
AudioSensorID N6 Bytes ID of Audio Sensor.
InputAudioData Ny Bytes Set of Input Audio Data
– InputAudioQualifier N12 Bytes The Qualifier of Input Audio
– InputAudioPayload N13 Bytes The Payload of Input Audio
– InputAudioDataLength N14 Bytes The Length of Input Audio Data in Bytes
– InputAudioDataURI N15 Bytes URI of Input Audio Data
DescrMetadata N16 Bytes Descriptive Metadata

5         Data Formats

Audio Qualifiers (Sub-Types, Formats, and Attributes) are required.

 6       To Respondents

Respondents are invited to propose Sub-Types, Formats, and Attributes.