| sound(noun, technology, study, science, device) |
| acoustics(noun, study, sound, science, audio) |
| appliance(noun, technology, device, machine, gadget) |
| device(noun, technology, machine, gadget) |
| equipment(noun, technology, device, machine, gadget) |
| gadget(noun, technology, device, machine) |
| piece of equipment(expression, technology, device, machine, gadget) |
| apparatus(noun, technology, device, machine, gadget) |
| creation(noun, technology, device, machine, gadget) |
| gear(noun, technology, device, machine, gadget) |
| auditory range(expression, sound, audio, acoustics) |
| music(noun, technology, device, radio, computer) |
| sound properties(expression, sound, audio, acoustics) |
| telecommunication(noun, technology, device, radio, computer) |
| telephony(noun, technology, device, radio, computer) |
| accessory(noun, technology, device, machine, gadget) |
| construction(noun, technology, device, machine, gadget) |
| contraption(noun, technology, device, machine, gadget) |
| contrivance(noun, technology, device, machine, gadget) |
| implement(noun, technology, device, machine, gadget) |