User Manual
Table Of Contents
- Title Page
- Quick Start Guide
- LP32 Front Panel
- LP32 Rear Panel
- MOTU Pro Audio Control Web App
- Overview
- It’s not on your hard drive
- Use your favorite web browser
- Control from multiple devices
- Run the installer, get the app
- Make hardware and network connections
- Launching the web app
- Device tab
- Device tab (continued)
- Device tab (continued)
- Routing tab
- Mixing tab
- Aux Mixing tab
- Mixer input channel strips
- Main Mix and Monitor channel strips
- Aux bus channel strips
- Group and Reverb channel strips
- 1 About the LP32
- Comprehensive I/O
- Flexible optical I/O
- Network I/O
- Other MOTU AVB interfaces
- Universal computer connectivity
- On-board DSP with mixing and effects
- 32-bit floating point processing
- Modeled vintage effects processing
- AVB/TSN system expansion and audio networking
- Matrix routing and multing
- Web app control
- Stand-alone mixing with wireless control
- Comprehensive metering
- Headphone output
- Rack mount or desktop operation
- Audio analysis tools
- AudioDesk
- 2 Packing List and System Requirements
- 3 Software Installation
- 4 Hardware Installation
- Overview
- USB or iOS audio interface setup
- AVB Ethernet audio interface setup
- Setup for two interfaces
- Setup for three to five interfaces
- Setup for a multi-switch network
- Setup for multiple interfaces
- Setup for web app control
- Setup for AVB Ethernet audio interface operation
- Audio connections
- Synchronization
- Syncing optical devices
- Syncing word clock devices
- Syncing an AVB network
- Syncing multiple AVB audio interfaces connected to a Mac
- 5 Presets
- 6 The Front Panel LCD
- 7 Working with Host Audio Software
- Overview
- Preparation
- Run the web app
- Choose the MOTU Pro Audio driver
- Reducing monitoring latency
- Monitoring through the LP32
- Direct hardware playthrough / Direct ASIO monitoring
- Monitoring through your host audio software
- Adjusting your host software audio buffer
- Adjusting buffer size on Mac OS X
- Adjusting buffer size on Windows
- Lower latency versus higher CPU overhead
- Transport responsiveness
- Effects processing and automated mixing
- Working with the Routing grid
- Enabling and disabling input/output banks
- Specifying the number of computer channels
- Making inputs and outputs available to your host software
- Configuration presets
- Naming computer input and output channels
- Streaming computer audio to and from the onboard mixer
- Working with AVB network streams
- Mirroring computer channels to multiple outputs
- Combining multiple sources to one output
- Routing grid tutorials
- Working with on-board mixing and effects
- 8 Mixer Effects
- 9 MOTU Audio Tools
- 10 Networking
- A Troubleshooting
- B Audio Specifications
- C Mixer Schematics
- D Updating Firmware
- E OSC Support
- Index
CHAPTER
87
10 Networking
OVERVIEW
The Audio Video Bridging (AVB) network port on
the LP32 opens up a world of possibilities for
creating expanded, customized audio network
systems.
About AVB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
MOTU’s AVB implementation . . . . . . . . . . . . . . . . . . . . . . . . 88
Networking examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
A quick guide to networking . . . . . . . . . . . . . . . . . . . . . . . . 90
Setting up a MOTU AVB interface for networking. . . . 91
Mapping audio to network streams . . . . . . . . . . . . . . . . . 91
Mapping computer channels to network streams . . . 91
Device presets and AVB stream connections. . . . . . . . . 92
Bridging to Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
The MOTU AVB Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
ABOUT AVB
Audio Video Bridging (AVB) is an extension of the
Ethernet standard developed by the IEEE (802.1
standards committee) specifically to add high-
performance audio and video networking.
☛ You may also hear AVB referred to as
AV B / T S N or simply TSN because the IEEE is in the
process of renaming the standard to Time Sensitive
Networking to accommodate the expanding scope
of the specification to applications beyond audio
and video.
AVB brings together the worlds of networking
technology and high-end audio. Here is a brief
summary of some of the immediate benefits of
AVB for you, as a MOTU AVB interface user:
■ An open industry standard — AVB has been
developed by the IEEE as an international standard
specification. It is not proprietary or controlled by
one company.
■ High channel counts — AVB provides hundreds
of network channels.
■ Extremely low latency — AVB guarantees low-
latency, real-time performance.
■ Guaranteed Quality of Service (QoS) — AVB’s
Stream Reservation Protocol provides Guaranteed
Quality of Service for each and every audio stream.
If the network cannot continuously maintain every
bit of every sample in the audio stream, it will not
allow you to make the network connection in the
first place. AVB streams are prioritized over other
network traffic to ensure high performance.
■ Network-wide clocking and sync — AVB
devices all clock together over your network for
better-than-sample-accurate phase lock across all
connected devices. Timing accuracy is down to the
nanosecond.
■ True plug-and-play operation — AVB has been
designed from the ground up to provide automatic
device discovery, enumeration, and connection
management. Just plug the LP32 into a standard
AVB switch and go. If you wish to make stream
connections and have the ability to select media
clock, you must use the web app, or some other
AVB controller. You don’t need an IT professional
to configure the network. AVB is a self-managing
network protocol.
■ Bridging to standard Ethernet — AVB
cooperates with standard Ethernet networks, for
connecting traditional Ethernet devices like
wireless routers, switches, or any other non-AVB-
aware device.
■ Support for existing network infrastructure —
Replace your existing switches with standard AVB-
compatible switches, and your CAT-5e or CAT-6
wired infrastructure now supports AVB.