System for providing multi-channel supply to four-channel stereo headphones
DE4237710A1
Improving head related sound characteristics for TV audio signal playback - using controlled audio signal processing for conversion into stereo audio signals
DE4213779A1
Headphone with pressure redn. and audio signal transmission system - is based on metallic bi-layer corrected for elasticity to linearise force exerted by headband on various size heads
DE4213793A1
Sound prodn. system using natural polysaccharide diaphragm - benefits from electrical feedback control giving positive and negative amplitudes of deflection for spherical acoustic radiation pattern
DE4203436A1
Data reduced speech communication based on non-harmonic constituents - involves analogue=digital converter receiving band limited input signal with digital signal divided into twenty one band passes at specific time
DE4125893A1
Audio reproduction system for motor vehicle - has multiple loudspeakersoperated to compensate for insufficiencies of acoustics insidevehicle
DE4110902A1
Stereo headphones with adjustable frequency response - use directional pattern of outer ear and post equalises response of headphone sound transducers by rotation of transducer positions
DE4091279D2
System zur vorneortung von mittels stereokopfhoerern erzeugten hoerereignissen
DE4007841A1
Audio signal processing for stereo headphone - adjusting stereo spectrum width or original audio signal and feeding back variable intensity
DE3922118A1
Direction variable ear adapting for stereo audio transmission - involves outer ear transmission function tuning for binaural adapting
DE3912582A1
Objective evaluation of headphone quality - employs graphs and experience guide data to determine ability to reproduce 3 dimensional sound without subjective factor
DE3903246A1
Detection and reduction of defects in sound irradiation in headphones
