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Tutorial 7

In this tutorial, we are demonstrating on Raspberry Pi to control the L-Acoustic L-ISA Controller software using python osc messaging protocol.

System Flowchart

graph LR
A[Raspberry Pi] --OSC--> B[L-ISA Controller]
B --Spatial Metadata--> C[L-ISA Processor]
C --Spatial Metadata--> B
D[Digital Audio Workstation<br>DAW] --L-ISA Bridge--> C
C --3.5mm/DVS--> E[Output Interface]
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Configuration (L-ISA)

  1. Navigate to Setting (pink), OSC (cyan).
  2. Change the IP Address of Incoming OSC control device. Note that L-ISA allows multiple OSC control device
  3. Ensure the following parameters are enabled Receive From (to allow OSC packet to receive by L-ISA) and Level Control (allow OSC to control level parameters in L-ISA Controller) (orange).
  4. Note L-ISA receiving OSC port number is fixed at 8880.

alt text

Sample of L-ISA OSC Setting page

  1. Navigate to Sources
  2. Enable OSC control for the following parameters (cyan)
    • Pan
    • Width
    • Distance
    • Elevation
    • Aux Send
  3. Configure OSC control ID for each source (green)

alt text

Sample of L-ISA Sources page

Configuration (Raspberry Pi)

  1. Create a directory folder for the required python files. In this particular case, we are going to name the folder lisa.
mkdir lisa
  1. Please copy the following files into the folder directory ~/lisa
lisa_mv.py
lisa_snap.py
  1. Go to the directory lisa
cd ~/lisa
  1. Edit the IP Address of the Laptop (running L-ISA Controller) in the respective python files
  • Line 19 of lisa_mv.py
PI_A_ADDR = "10.10.10.10"
  • Line 19 of lisa_snap.py
PI_A_ADDR = "10.10.10.10"
  1. Run the python files lisa_mv.py or lisa_snap.py (please ensure you have configured 2 or more snapshots in L-ISA). If the script is executed successfully, pan value of source 1 in L-ISA (lisa_mv.py) or fire next snapshot in L-ISA (lisa_snap.py).
python3 lisa_mv.py
python3 lisa_snap.py

L-ISA OSC API

In this tutorial, we are using the OSC API in L-ISA Controller. The API will contain controllable function for ezternal device to interact with L-Acoustic L-ISA software. To access API Documentation

  1. Press F1
  2. Search OSC API