Ronald Aarts
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Ronald M. Aarts, (Amsterdam, 1956), is a Dutch electrical engineer and physicist, in the field of electroacoustics and in biomedical signal processing technology .
Biography
Ronald M. Aarts received a BSc degree in electrical engineering in 1977 and a PhD in physics from Delft University of Technology in 1995. He joined the Optics group at Philips Research Laboratories (formerly known as the Natlab), Eindhoven, Netherlands, in 1977. His research initially ubvovled servo systems and signal processing for use in both Video Longplay players and compact disc players. In 1984 he joined the Acoustics Group at Philips working on developing CAD tools and signal processing for loudspeaker systems. In 1994 he became a member of the Digital Signal Processing (DSP) group at Philips and has led projects on the improvement of sound reproduction by exploiting DSP and psychoacoustic phenomena..[1].
In 2003 he became a Philips Fellow [2] and extended his interests in engineering to medicine and biology in particular sensors and their signal processing for ambulatory monitoring, sleep, cardiology, perinatology, drug response monitoring (DRM) systems. and epilepsy detection. He is the author or co-author of more than 400 published papers and reports and has been credited with more than 250 patent applications, including more than 175 U.S. (more than 100 of which were granted). For his creative contributions at Philips, he received the company's Gold Invention Award (2012) [3] and the Diamond Invention Award (2018) [4]
He became an IEEE Fellow in 1997 [5] [6] (2007) and receiving their Chester Sall Award (2017) [7]and in 2010 he was awarded the AES (Audio Engineering Society's Silver Medal [8] He was also co-organizer and chairman of several international conventions.
Aarts has been a part-time professor at Eindhoven University of Technology(TU/e) since 2006, where he mainly supervises Master and PhD students. Since 1990 he has been president of the Aarts Consultancy. In 2019, he retired from Philips and now focuses mainly on his academic and consultancy work, the latter encompassing both technical and intellectual property (IP) advice.
Bass sound enhancement
Aarts and his collaborators at Philips [9] [10] have been involved in the development, improvement and hardware implementation of bass enhancement/restoration systems exploiting the natural psycho-acoustic phenomenon known as the "missing fundamental". Small loudspeakers are in general not capable of reproducing low frequency notes, but by exploiting auditory illusions one can use either the virtual pitch phenomenon to shift the low frequencies to a higher frequency band where the loudspeakers are capable, this is sometime referred to as Ultra Bass[11]; or, one can map the very low frequency to one single frequency where the loudspeaker is designed for a high efficiency, this is sometime referred to as Bary Bass[12]. On the other hand, if the loudspeaker is capable of radiating low frequencies, but if they are not present in the music, those frequencies can be derived from the music using a bandwidth extension scheme, this is sometime referred to as Infra Bass [13]. Finally, the audio quality, especially from high Q low frequency sound transducers, can be improved by attenuating decay parts of bass signals thereby reducing sustain or ringing for bass notes, this is sometimes referred to as punchy bass [14]
Publications
A list of published articles (PDF) and US-patents can be found on the homepage of Ronald M. Aarts
References
- ^ http://resolver.tudelft.nl/uuid:25ffb323-b94d-465a-87dd-2dbfeab9a82a Beyond physics for superior sound
- ^ http://hjmwijers.nl/AAE/EE-Aarts-RM-lemma1.pdf
- ^ https://adoc.pub/benoemingen-en-onderscheidingen-op-het-natlab.html
- ^ https://www.cursor.tue.nl/en/news/2018/mei/week-1/part-time-professor-ee-has-a-hundred-patents-to-his-name/
- ^ https://services27.ieee.org/fellowsdirectory/menuALPHABETICAL.html (2007)
- ^ https://services27.ieee.org/fellowsdirectory/menuALPHABETICAL.html
- ^ https://ctsoc.ieee.org/awards/sall.html Award voor 2015
- ^ https://aes2.org/about/awards In recognition of outstanding development or achievement in the field of audio engineering
- ^ https://www.newscientist.com/article/mg15420863-000-pump-up-the-bass-and-let-others-sleep/
- ^ [1] What the ear doesn't hear.
- ^ U.S. patent 6,134,330
- ^ [2] Hardware for ambient Sound Reproduction
- ^ U.S. patent 6,961,435
- ^ U.S. patent 8,934,643