downsweep
Falling arc motion
A downsweep is a downward sweeping motion or stroke—the arc of a bird's wing on its descent, the curve of a hairstyle brushed down, or the declining trajectory on a graph.
In acoustics, a downsweep is a sound that drops in frequency over time, like a falling whistle or certain whale calls.
Decrease or refuse
- decreaseBecome or make smaller
- dropFall or release
- fallDescend under gravity
- descentDownward slope or lineage
downturn · dip · slope · trend · curve · trajectory · plunge · regression
Baleen whale species
- vocalizationProducing sounds with voice
- callContact by phone
- songMusical piece with words
- communicationExchanging ideas or information
migration · ocean · marine · mammal · pod · calf · breeding · diving
Navigation through reflected sound
- pingBrief metallic tone
- pulseArterial blood throb
- chirpShort, high avian sound
- signalMessage-conveying cue
detection · submarine · hydrophone · transducer · underwater · propagation · reflection · scanning
decline
Decrease or refuse
descent · downturn · dip · slope · trend · curve · trajectory · plunge · regression · downward
glissando
Rapid pitch sweep
frequency · drop · falling · slide · portamento · bend · dip · contour · inflection · modulation
humpback
Baleen whale species
- vocalizationProducing sounds with voice
- callContact by phone
- songMusical piece with words
communication · migration · ocean · marine · mammal · pod · calf · breeding · diving · feeding
echolocation
Navigation through reflected sound
signal · detection · submarine · hydrophone · transducer · underwater · propagation · reflection · scanning · range