Company Filing History:
Years Active: 2008
Title: Symon Ronald Appel: Innovator in Telecommunications
Introduction
Symon Ronald Appel is a notable inventor based in Haarlem, Netherlands. He has made significant contributions to the field of telecommunications, particularly in measuring the quality of telephone links.
Latest Patents
Symon Ronald Appel holds a patent for "Measuring a talking quality of a telephone link in a telecommunications network." This invention focuses on assessing the influence of noise on the talking quality of a telephone link. The process involves feeding a talker speech signal and a degraded speech signal into an objective measurement device. This device produces an output signal that represents an estimated value of the talking quality. The degraded signal includes a returned signal originating from the network during the transmission of the talker speech signal. The measurement provided by the device is a modified PSQM-like measurement, which accounts for masking effects caused by noise present in the returned signal. The modeling includes noise suppression performed on a difference signal in a loudness density domain using noise estimation.
Career Highlights
Symon Ronald Appel is associated with Koninklijke KPN N.V., a leading telecommunications company in the Netherlands. His work has contributed to advancements in the quality of telecommunications services.
Collaborations
He has collaborated with notable colleagues, including John Gerard Beerends and Andries Pieter Hekstra, enhancing the impact of his innovations in the field.
Conclusion
Symon Ronald Appel's contributions to telecommunications through his innovative patent demonstrate his commitment to improving communication quality. His work continues to influence the industry positively.