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But their sound beam was grossly distorted.
The directional sound beam was realised with an array of controlled acoustic moving coil sources.
But in a cluttered living room, as the sound beam expands, it can bounce off furniture or other surfaces, which can lead to inaccurate readings.
The paper compares different methods to generate the sound beam and investigates their effectiveness for this application by simulation and experimental results.
This method of control aims to form a directive sound beam within a short distance while widening the frequency range of the beamforming.
Each speaker has slight variations in the sound it emits, and since focusing a sound beam requires extreme precision in timing, these slight variations can cause large distortions in sound.
Similar(33)
It is also the reason why "sound beams" cannot generally be produced like light beams.
Dr. McLaren, as commander of the Queenfish, in 1970 probed the Arctic deep with sound beams.
DaimlerChrysler is looking into installing sound beams in a truck so that passengers can listen to their own music.
As for consumers, Terry Conrad, president of ATC, estimates they will start being hit by sound beams within two years.
Air-coupled acoustic detection, when other methods are employed to generate high-amplitude sound beams is also reviewed.
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