MICROSEMI SEMICONDUCTOR CORP. Patent applications |
Patent application number | Title | Published |
20130188797 | Over-Sampled Single-Sided Subband Echo Cancellation - A method of echo cancellation, particularly for use in high definition applications, splits an input signal and reference signal into M single-sided sub-band. The subbanded signals are downsampled at a downsampling rate N, where N≦M, adaptively filtered, and recombined to produce an output signal. The sub-bands are preferably oversampled such that N07-25-2013 | |
20120294437 | AUTOMATIC GAIN CONTROL FOR TELE-PRESENCE VOICE ECHO CANCELLERS - In a closed loop acoustic system with forward and return paths, gain is controlled with different instantiations of a common gain control engine on each path. The gain control engine computes a first gain based on near-end signal levels, computes a second gain based on the output of the gain control engine, computes a third gain based on a howling condition, and computes a final gain as the product of the first, second and third gains. | 11-22-2012 |
20120154610 | MOTOR NOISE REDUCTION CIRCUIT - A method of reducing noise in an environment where the noise source is in a fixed location relative to a pair of microphones, such as in a camera with a zoom motor, involves receiving signals x | 06-21-2012 |
20120146689 | DIFFERENTIAL SIGNAL TERMINATION CIRCUIT - A multi-mode differential termination circuit has a pair of differential input terminals for receiving external differential signals, a pair of series-connected load elements coupled between said differential input terminals, and an analog interface terminal coupled a common junction point of said load elements. A bias circuit is coupled to the common junction point of the load elements for selectively applying a bias voltage thereto in response to a digital control signal. A control input receives the digital control signal to activate the bias circuit. | 06-14-2012 |