FACILITIES FOR WORKING

PURPOSE:To improve work efficiency by giving insignificant noise (sound whose spectrum is continuous and has a small timewise change) to an operator under an environment in which a surrounding sound (sound coming toward the operator) being one of causes to decrease the work efficiency of the operato...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YAMAMORI KAZUHIKO, SAWAKI MINAKO
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS SOUND-PRODUCING DEVICES TELEPHONIC COMMUNICATION
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