Tag: Laser
The Acoustic-Optical Microphone
A relatively new development from VocalZoom, a voice communications company based in Israel, involves the use of a combination of microphone and optical sensor to drastically improve voice communication in noisy environments.
Named “SEEON” or Speech Enhancement Electro Optical Microphone, the new technology aims to offer 20-40dB of noise reduction in situations such as high volume industrial workplaces, busy cityscapes and parties.
Acousto-Optic Scanning: Seeing Sound
Being able to visually interpret sound would be an extremely useful function, one that could aid people in the understanding of wave propagation and how those waves interact with each other. As well as this, visualising sound could aid loudspeaker design as manufacturers are able to more accurately study the interference patterns that determine the directivity and frequency response of their products.
Researchers at the National Physical Laboratory seem to have done just that, using a scanning laser Doppler vibrometer that can measure the minute changes in optical phase as the laser passes through an acoustic field.