Problem is caused by a source BASA fillets source BASA fillets, airflow, low pressure less than outside, where the outside air inlet and have access to interactive voice source BASA fillets occur source BASA fillets.
Basa Basa problem is caused by the flow of air under pressure which is less than the outside. The air strike took place in the entrance and a sound Basa Basa.
Burst into burst into a problem is caused by low pressure air flow which within less than outside. The outside air strike through and have formed sound burst into a snapping sound.