Question

why whistling sound disappears when blown with high speed of air from mouth...?​

Answer 1

Answer:

The critical skill in whistling is using your tongue to shape your mouth cavity so that it resonates with those pressure pulses, amplifying them into a single pure tone. That's the whistle you hear.

Explanation:

The critical skill in whistling is using your tongue to shape your mouth cavity so that it resonates with those pressure pulses, amplifying them into a single pure tone. That's the whistle you hear.

Answer 2

Answer:

because that is not actual force need for whistling. for whistling we need constant flow of air.