The Plural Node architecture is an implementation architecture for professional audio devices that adhere to the “Audio and Music (A/M)” protocol. The A/M protocol determines how audio and MIDI data are transported over IEEE 1394 (firewire). The Plural-Node implementation architecture comprises two components on separate IEEE 1394 nodes – a “Transporter” component dedicated to A/M protocol handling, and an “Enabler” component that controls the Transporter and provides high level plug abstractions. Low level control of individual Transporters occurs within the “Hardware Abstraction Layer” (HAL) of the Enabler. Device manufacturers write their own plug-ins for the HAL to interact with their Transporters. The Open Generic Transporter specification provides an open interface between the HAL and Transporter for the convenience of device manufacturers.
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