꾸러미:
com.remind4u2.dog.whistle
다운로드:
100K
크기:
3.7 MB
지원되는 android 버전:
2.3 이상
업데이트 날짜:
2016년8월3일
It use different sonic sounds of high frequency. Dogs can hear sound at higher frequencies than humans can. A Dog Whistle exploits this by emitting a high frequency sound to call to a dog. Many dog whistles emit sound in the upper audible range of humans, but some, such as the silent whistle, emit ultrasound at a frequency in the range 18–22 kHz.
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