Basically, it is a fix for macOS Dictation not working with external microphones (USB mics, AirPods, etc.) by automatically terminating corespeechd by running killall corespeechd every 3 hours in the background using LaunchAgents in macOS.

The easiest way to automate this process is by running the provided setup script.

1. Download the script or create it manually by saving the following as setup_kill_corespeechd.sh:

   #!/bin/bash
   
   # Define the LaunchAgent path
   PLIST_PATH="$HOME/Library/LaunchAgents/com.user.killcorespeechd.plist"
   
   # Create the LaunchAgents directory if it doesn't exist
   mkdir -p "$HOME/Library/LaunchAgents"
   
   # Write the plist file
   cat <<EOF > "$PLIST_PATH"
   <?xml version="1.0" encoding="UTF-8"?>
   <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
   <plist version="1.0">
   <dict>
       <key>Label</key>
       <string>com.user.killcorespeechd</string>
   
       <key>ProgramArguments</key>
       <array>
           <string>/usr/bin/killall</string>
           <string>corespeechd</string>
       </array>
   
       <key>StartInterval</key>
       <integer>10800</integer> <!-- 3 hours in seconds -->
   
       <key>RunAtLoad</key>
       <true/>
   </dict>
   </plist>
   EOF
   
   # Load the LaunchAgent
   launchctl load "$PLIST_PATH"
   
   # Enable the LaunchAgent for persistence across reboots
   launchctl enable user/$(id -u)/com.user.killcorespeechd
   
   # Check status
   launchctl list | grep com.user.killcorespeechd && echo "Service successfully installed and running." || echo "Failed to start service."
   
   echo "Setup complete. The corespeechd process will be terminated every 3 hours."

2. Make the script executable

   chmod +x setup_kill_corespeechd.sh

3. Run the script

   ./setup_kill_corespeechd.sh

Run the following command to create and open a .plist file:

mkdir -p ~/Library/LaunchAgents
nano ~/Library/LaunchAgents/com.user.killcorespeechd.plist

Copy and paste the following XML into the file:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>com.user.killcorespeechd</string>

    <key>ProgramArguments</key>
    <array>
        <string>/usr/bin/killall</string>
        <string>corespeechd</string>
    </array>

    <key>StartInterval</key>
    <integer>10800</integer> <!-- 3 hours in seconds -->

    <key>RunAtLoad</key>
    <true/>
</dict>
</plist>

• StartInterval is set to 10,800 seconds (3 hours).
• RunAtLoad ensures it runs immediately upon loading.

Save the file and run:

launchctl load ~/Library/LaunchAgents/com.user.killcorespeechd.plist

To make sure it persists across reboots, use:

launchctl enable user/$(id -u)/com.user.killcorespeechd

Verify that it’s running with:

launchctl list | grep com.user.killcorespeechd

If you ever need to stop it, run:

launchctl unload ~/Library/LaunchAgents/com.user.killcorespeechd.plist

If you prefer using cron, add the following line to your crontab (crontab -e):

0 */3 * * * /usr/bin/killall corespeechd

This will execute the command every 3 hours.

• LaunchAgents is preferred for macOS since cron has been deprecated in favor of launchd.
• If you encounter issues, check logs using:

  log stream --predicate 'subsystem == "com.apple.launchservicesd"'

Let me know if you have any questions! 🚀