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OSC Streaming

Stream Muse data to other applications using Open Sound Control (OSC) protocol.

What is OSC?​

OSC (Open Sound Control) is a protocol for communication between computers, synthesizers, and other multimedia devices. It's widely used in:

  • Music and audio software (Max/MSP, Pure Data, Ableton Live)
  • Visual programming (TouchDesigner, Processing)
  • Research tools (MATLAB, Python)
  • Game engines (Unity, Unreal)

Enabling OSC Streaming​

  1. Open Settings → Output
  2. Find the OSC Streaming section
  3. Toggle Enable OSC
  4. Configure host and port:
    • Host: IP address of receiving application (default: 127.0.0.1)
    • Port: UDP port number (default: 9000)
    • Stream Name: Identifier for your stream (default: PetalStream)
Settings Persistence

Your OSC configuration is automatically saved and will be restored the next time you launch the app.

OSC Addresses​

Petal Metrics sends data to the following OSC addresses:

EEG Data​

/muse/eeg [float, float, float, float]

Four channels: TP9, AF7, AF8, TP10 (in microvolts)

Accelerometer​

/muse/acc [float, float, float]

Three axes: X, Y, Z (in g units)

Gyroscope​

/muse/gyro [float, float, float]

Three axes: X, Y, Z (in degrees/second)

PPG (Muse S only)​

/muse/ppg [float, float, float]

Three channels: Ambient, IR, Red

Battery Level​

/muse/batt [float]

Battery percentage (0-100)

Example: Receiving in Python​

from pythonosc import dispatcher, osc_server

def eeg_handler(address, *args):
    tp9, af7, af8, tp10 = args
    print(f"EEG: TP9={tp9:.2f}, AF7={af7:.2f}, AF8={af8:.2f}, TP10={tp10:.2f}")

def acc_handler(address, *args):
    x, y, z = args
    print(f"Accelerometer: X={x:.2f}, Y={y:.2f}, Z={z:.2f}")

disp = dispatcher.Dispatcher()
disp.map("/muse/eeg", eeg_handler)
disp.map("/muse/acc", acc_handler)

server = osc_server.ThreadingOSCUDPServer(("127.0.0.1", 9000), disp)
print("Listening for OSC on port 9000...")
server.serve_forever()

Example: Receiving in Max/MSP​

  1. Create a udpreceive 9000 object
  2. Connect to OSC-route /muse/eeg /muse/acc /muse/gyro
  3. Unpack the data with unpack f f f f (for EEG) or unpack f f f (for motion)

Example: Receiving in TouchDesigner​

  1. Add an OSC In CHOP
  2. Set the port to 9000
  3. Data appears as channels automatically

Network Streaming​

To stream to another computer on your network:

  1. Find the IP address of the receiving computer
  2. Set Host to that IP address (e.g., 192.168.1.100)
  3. Ensure the port is open in the receiving computer's firewall
Firewall Settings

You may need to allow UDP traffic on your chosen port through your firewall.

Troubleshooting​

No data received​

  • Verify OSC is enabled in Settings
  • Check host and port match your receiving application
  • Ensure firewall allows UDP on the specified port
  • Confirm your subscription includes streaming features

Data is choppy or delayed​

  • Use a wired network connection if streaming to another computer
  • Reduce the number of applications processing the data
  • Check CPU usage on both computers

Availability​

OSC streaming is available on all subscription plans (Basic, Standard, Advanced).