Company Filing History:
Years Active: 2007-2014
Title: Innovations by Walter Zuluaga
Introduction
Walter Zuluaga is an accomplished inventor based in Rochester Hills, MI (US). He holds two patents that showcase his expertise in the field of audio technology. His innovative contributions have significantly impacted the way we experience sound.
Latest Patents
One of Zuluaga's latest patents is an Active Noise Cancellation (ANC) controller for Bluetooth headphones. This controller is designed to perform noise attenuation over a predetermined frequency range. It comprises several components, including a first input for a reference signal indicative of noise levels, a second input for receiving an error signal indicative of remnant noise levels, and an output for providing a noise cancellation signal. The controller also features a fixed feedback controller for processing the error signal, a fixed feed-forward controller for processing the reference signal, and an adaptive feed-forward controller equipped with a digital adaptive finite impulse response filter for operation on both the reference and error signals.
Another significant patent by Zuluaga focuses on acoustic shock prevention. This invention reduces acoustic shock by attenuating an input signal based on tones detected through frequency domain analysis. The spectrum of the input signal is obtained, and a relative energy signal is created, which includes multiple relative energy elements representing the energy in corresponding frequency bins of the input signal spectrum. A difference signal is also generated, representing the difference between corresponding frequency bin values and adjacent frequency bin values. Detection signals are determined to identify the presence of sound elements in the