PortAudio Audio Interface

Table of Contents

• Audio Interface Configuration
• Configuration Syntax
• Configuration Example

Audio Interface Configuration

The following options can be provided when using PortAudio as our top level component’s Audio Interface:

• sampleformat: Specifies PortAudio sample format. Possible values are:
  • signedInt8Bit
  • unsignedInt8Bit
  • signedInt16Bit
  • unsignedInt16Bit
  • signedInt24Bit
  • unsignedInt24Bit
  • signedInt32Bit
  • unsignedInt32Bit
  • float32Bit .
• interleaved: Enable/disable interleaved mode, possible values are true, false.
• hostapit: Used to specify PortAudio backend audio interface. Possible values are:
  • default
  • WASAPI : Supported OS: Windows.
  • ASIO : Supported OS: Windows.
  • WDMKS : Supported OS: Windows.
  • DirectSound : Supported OS: Windows.
  • CoreAudio : Supported OS: MacOs.
  • ALSA : Supported OS: Linux.
  • JACK : Supported OSs: MacOs, Linux.

Other deprecated or unused backends which are available within PortAudio are SoundManager(MacOs), OSS(Linux), AL, BeOS, AudioScienceHPI(Linux).

Configuration Syntax

This is the configuration syntax, expressed in json language:

{
  "sampleformat": "", 
  "interleaved": "", 
  "hostapi" : ""
}

Configuration Example

This configuration is an example of usage of PortAudio, with Jack audio interface as backend.

{
  "sampleformat": "float32Bit", 
  "interleaved": "false", 
  "hostapi" : "JACK"
}