To create a repetitive backup beep sound for an autonomous mobile robot operating in an industrial environment, you can customize the following parameters in the Beep Sound Effect Generator:

1. Frequency: Set the frequency to a range between 800 Hz to 1200 Hz for a melodious tone.
2. Duration: Choose a duration of around 0.5 seconds for each beep to ensure clarity and attention-grabbing quality.
3. Repetition Rate: Set the repetition rate to 1 beep every 1 second to maintain a consistent and repetitive sound pattern.
4. Modulation: Apply slight modulation to the pitch to create a less mechanical and more pleasant sound. A subtle vibrato effect can enhance the melodious quality.
5. Volume: Adjust the volume to a level that is clearly audible in an industrial environment without being overly harsh.

By configuring these settings, you will generate a clear, attention-grabbing, and melodious backup beep sound suitable for safety in an industrial setting.