60 results about "Distortion minimization" patented technology

The present invention relates to a bone conduction speaker module and bone conduction earphones having bone conduction speaker modules and, more specifically, to a bone conduction speaker module and bone conduction earphones having bone conduction speaker modules, which can accurately output sound by minimizing the distortion of an inputted signal, can stably output sound with little vibrations, enable a user to use the earphones in a comfortable state by minimizing the vibrations transmitted to the user, prevent a strain from being put on the user's body even when the earphones are used for a long time, by minimizing the influence thereon, which a magnetic force of a magnet provided therein exerts on the user, facilitate the wearing thereof since the earphones are formed as an in-ear type, and can prevent an accident from occurring when the user does not hear an external sound, by allowing the user to naturally hear the external sound. To this end, the present invention relates to the bone conduction speaker module used for earphones, headphones and hearing aids, the bone conduction speaker module comprising: a housing comprising a first case for covering a part coming into contact with the human body, and a second case for covering the other side of the first case; a magnet part provided inside the housing; and a voice coil part positioned at the top of the magnet part.

A method acquires compressed videos. Intra-, or inter-frames of each compressed video are acquired at a fixed sampling rate. Joint analysis is applied concurrently and in parallel to the compressed videos to determine a variable and non-uniform temporal sampling rate for each compressed video so that a combined distortion is minimized and a combined frame rate constraint is satisfied. Each compressed video is then sampled at the associated variable and non-uniform temporal sampling rate to produce output compressed videos having variable temporal resolutions.

An attenuation circuit uses a voltage controlled variable resistance transistor as a signal attenuator for receivers operating in the zero Hz to about 30 MHz range. The transistor functions in the linear region to linearize the transistor resistance characteristics used for signal attenuation. In an exemplary application, the attenuation circuit is used as an RF attenuator for AM radio broadcast receivers and amplifiers with automatic gain control. Multiple attenuation circuits can be coupled in parallel, each attenuation circuit having a different sized variable resistance transistor, to form sequentially activated stages that increase the range of attenuation while minimizing distortion.