Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Acoustic reproducing apparatus










Image Number 3 for United States Patent #5412733.

The present invention relates to an acoustic reproducing apparatus which is suitable particularly for listening to reproduced sound with noise through an open-air-type head phone. A sound leakage frequency band, when a head phone is loaded is measured in advance, and operation of a filter attenuating that sound leakage frequency band is changed-over. Thereby the sound leakage from the head phone to the outside in the loaded state is controlled. Also, a noise frequency characteristic is measured in advance, the low frequency band is intensified so as to correspond to that characteristic, and operation of the filter for attenuating the high frequency band containing the above-mentioned sound leakage frequency band is controlled to be changed-over.








 
 
  Recently Added Patents
Toilet bowl
Hot-press cushion material and manufacturing method of the same
Processing color and panchromatic pixels
Etching apparatus and methods
Method and apparatus for secure transfer and playback of multimedia content
Method and laser receiver for acoustically indicating a laser beam
Adaptive period network session reservation
  Randomly Featured Patents
Paulownia.times.Elongata tree named `Carolonia`
Austenitic ductile cast iron
Process for preparation of chewing gum
Route calculation system, network management device, route calculation engine, route calculation method and program product
Trim for light fixture
Double perovskite catalysts for oxidative coupling
Casing for noise attenuation in a rock drilling rig
Methods for enhancing segregation of transgenes in plants
Integrated semiconductor device for scanning an image
Lockdown and support structure for agricultural particulate tank