The material below is Open Game Content from a 3PP Source
School transmutation [air]; Level bard 2, inquisitor 2, sorcerer/wizard 2, witch-4wfg 2
Casting Time 1 standard action
Components V, S
Range 1 mile/level
Area 10-ft.-radius spread
Duration no more than 1 hour/level or until discharged (destination is reached)
Saving Throw none; Spell Resistance no
You send a message or sound on the wind to a designated spot. The whispering wind travels to a specific location within range that is familiar to you, provided that it can find a way to the location. A whispering wind is as gentle and unnoticed as a zephyr until it reaches the location. It then delivers its whisper-quiet message or other sound. Note that the message is delivered regardless of whether anyone is present to hear it. The wind then dissipates.
You can prepare the spell to bear a message of no more than 25 words, cause the spell to deliver other sounds for 1 round, or merely have the whispering wind seem to be a faint stirring of the air. You can likewise cause the whispering wind to move as slowly as 1 mile per hour or as quickly as 1 mile per 10 minutes.
When the spell reaches its objective, it swirls and remains in place until the message is delivered. As with magic mouth, whispering wind cannot speak verbal components, use command words, or activate magical effects.