directional directionalproducing or receiving sound only from certain angles or directions Related Articles: Glossary: DIFARGlossary: projector arraysGlossary: beamformingTutorial: Projector (Sound Source)How is sound measured?Reference List: Animals and SoundHow do people and animals use sound in the sea?Hydrophone/ReceiverSpecialized Sounds in Cetacean CommunicationVector Sensors Chris Knowlton2017-02-26T20:09:58-05:00