My 9 week old infant makes high pitched gasping noises occasionally is this normal?

Windpipe flexible: Sounds like the noise you describe is stridor. Babies can make this noise occassionally when they breath in deep or suddenly because their traceas (windpipe) doesn't have its full rigidity yet, so it tends to collapse down, leading to that high pitched noise. Most babies outgrow this as they age. As long as not interfering with breathing or feeding, just mention it to doc at your next visit.

Workup/Mgt: If the baby is growing, developing and feeding normally, the symptom can be followed carefully by your pediatrician. I would advise having your pediatrician observe the baby feeding and bringing a recording of the gasping noise to the office. If you notice rapid chest movement, cough, color changes, these indicate respiratory distress,and requires evaluation immediately, in association w gasping.