SOUND CONTROL MATERIALS USED

Brand Owner Address Description
DB SHIELD KDI Technologies, Inc. 2206 Pine Ridge Drive Jenison MI 49428 Sound control materials used in vehicle interiors, namely, sound absorbers and sound barriers;DB;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. A sound-amplification apparatus comprises: an acoustic signal source for outputting an acoustic signal; an amplified sound source for receiving the acoustic signal from the acoustic signal source and radiating an amplified sound; a control sound source provided in a vicinity of the amplified sound source for radiating a control sound; and signal processing means for producing a control sound signal by controlling at least one of an amplitude and a phase of the acoustic signal from the acoustic signal source so that an acoustic space having a desired directionality is formed by interference between the amplified sound and the control sound, and providing the control sound signal to the control sound source.