Circuit
with Julia Kim
5.6 - 5.10.2024
The Cooper Union
41 Cooper Square, New York, NY
sound
with Julia Kim
5.6 - 5.10.2024
The Cooper Union
41 Cooper Square, New York, NY
sound
An industrial 555nm yellow-green laser diode is attached to the gourd on the right. Meanwhile, the gourd in the middle has an ultrasonic transducer tied to its top, emitting frequencies beyond human hearing (20 Hz - 20 kHz): The transducer attempts to communicate with its counterpart — a receiver clinging to the plant's climbing bracket. Two transducers, functioning as oscillators, are also clipped to the bracket, sending out periodic electrical signals ranging between 39 kHz and 40 kHz. These oscillators regulate the conversation between the transducer and receiver, keeping it within this range.
While ultrasonic transducers are designed for 40 kHz operation, this setup achieves better sensitivity and interaction within the specified range. Within the ultrasonic field, any movement of objects or transducers is detected and amplified through computer speakers. The system operates effectively when the transducer and receiver are between 2 to 450 centimeters apart. Physical movements of objects within this field cause variations in tone.
The gourd on the left is a rattle.
展览写作，由MISPLACED PRESS出版
工业级555nm黄绿色激光二极管安装在右侧葫芦上。同时，中间的葫芦顶端绑有超声波换能器，发出超出人类听觉范围的频率（20赫兹至20千赫兹）：该换能器试图与另一端接收器—附着在植物攀爬支架上的它的同类—进行通信。支架上另夹有两枚振荡器功能的换能器，周期性发出39千赫至40千赫的电信号。这些振荡器调控着换能器与接收器间的对话，确保其始终维持在此频率区间内。
尽管超声波换能器设计工作频率为40千赫，但此装置在指定范围内实现了更优的灵敏度与交互效果。在超声波场中，任何物体或换能器的移动都会被探测到，并通过计算机扬声器放大。当换能器和接收器相距2至450厘米时，系统运行效果最佳。该区域内物体的物理移动会导致音调变化。
左侧的葫芦是一个沙槌。
工业级555nm黄绿色激光二极管安装在右侧葫芦上。同时，中间的葫芦顶端绑有超声波换能器，发出超出人类听觉范围的频率（20赫兹至20千赫兹）：该换能器试图与另一端接收器—附着在植物攀爬支架上的它的同类—进行通信。支架上另夹有两枚振荡器功能的换能器，周期性发出39千赫至40千赫的电信号。这些振荡器调控着换能器与接收器间的对话，确保其始终维持在此频率区间内。
尽管超声波换能器设计工作频率为40千赫，但此装置在指定范围内实现了更优的灵敏度与交互效果。在超声波场中，任何物体或换能器的移动都会被探测到，并通过计算机扬声器放大。当换能器和接收器相距2至450厘米时，系统运行效果最佳。该区域内物体的物理移动会导致音调变化。
左侧的葫芦是一个沙槌。
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