Ylva Ellen Maria Bjork

Title: Ylva Ellen Maria Bjork: Innovator in Loudspeaker Technology

Introduction

Ylva Ellen Maria Bjork is a notable inventor based in Solna, Sweden. He has made significant contributions to the field of loudspeaker technology, holding a total of 3 patents. His innovative work focuses on methods and apparatuses that enhance the performance and reliability of electromechanical transducers.

Latest Patents

One of his latest patents is titled "Temperature monitoring for loudspeakers - Methods and Apparatus for estimating a temperature of an electromechanical transducer." This method involves receiving an audio signal and providing an output signal to the electromechanical transducer based on that audio signal. It includes determining whether a first magnitude of the audio signal in a specific frequency band exceeds a predetermined threshold. If the magnitude is above the threshold, the method calculates the first impedance of the transducer and estimates its temperature accordingly. Conversely, if the magnitude is below the threshold, a pilot tone is inserted into the audio signal to facilitate the estimation of temperature based on the second impedance.

Another significant patent is "Linear and non-linear speaker excursion modeling." This method characterizes a loudspeaker by filtering an input test signal using a linear model that describes the speaker's excursion in response to a given input signal. The filtered signal is then applied to the loudspeaker, and the excursion is measured to determine non-linear parameters for a more accurate model.

Career Highlights

Ylva Bjork is currently employed at Cirrus Logic Inc., where he continues to develop innovative solutions in audio technology. His work has been instrumental in advancing the understanding and functionality of loudspeakers.

Collaborations

He has collaborated with notable colleagues such as Erik Vilhelm Lindahl and Jason William Lawrence, contributing to a dynamic and innovative work environment.

Conclusion

Ylva Ellen Maria Bjork's contributions to loudspeaker technology through his patents and work at Cirrus Logic Inc. highlight his role as a leading inventor in the field. His innovative methods for temperature monitoring and excursion modeling are paving the way for advancements in audio technology.