missed this one earlier this year. Mixtapes the way we knew them wouldn't existed without this guy:
Lodewijk Frederik "Lou" Ottens (21 June 1926 – 6 March 2021) was a Dutch engineer and inventor, best known as the
inventor of the cassette tape, and for his work in helping to develop the compact disc. Ottens was employed by Philips for the entirety of his career.
The Dutch engineer credited with inventing the audio cassette, Lou Ottens died at the age of 94. While working as the head of product development for Philips in 1960, he led a team that developed the initial portable tape recorder. Three years later, he introduced the first cassette tape at a Berlin electronics fair. The invention would revolutionize music consumption, as fans were soon able to listen to their favorite tapes on the go. "We expected that it would be a success, but not a revolution," Ottens later remarked of his invention. The engineer also contributed to another popular music format. In 1979, he led a team that developed the compact disc.
In 1960, Ottens became the head of the new product development department in Hasselt. While in this position, he led the development of Philips' first portable tape recorder, the EL 3585. This project proved to be quite successful, with over 1 million units being sold.
Building on the success of the EL 3585, Philips Hasselt started working on plans to develop a portable cassette recorder. The goal for this "pocket recorder," as it was nicknamed, was to be inexpensive and small, with low battery consumption but reasonable sound quality. Originally, Philips planned on working with RCA and using their RCA tape cartridge system cassette, but Ottens found that the dimensions and tape speed of the set made it not suitable for their desired product.
Philips eventually decided to develop their own cassette, with RCA's cassette as a starting point. Ottens started the design of the cassette by cutting a block of wood to fit into his jacket pocket. This wood block would become the model for what became the first portable cassette recorder, the EL 3300.
Ottens managed a team of ten or twelve workers who had experience in designing gramophones and tape recorders to develop the cassette and its equipment. While developing the cassette, the group often utilized resources and knowledge from the nearby Eindhoven location.
In 1963, Philips decided to publicly introduce the cassette system at IFA Berlin. This introduction was not immediately very widely received and did not spark much interest among those in the audio world. However, some photos were taken of the system, which would later be used in the production of Japanese copies of Ottens' system, which were notably larger in size than the original. WFA Heylands, a Dutch civil engineer and inventor in Ottens' team at Philips Hasselt, who graduated from TH Aachen (Germany), often explained that the reason for Philips' break through with the Compact Cassette, was the fact that they offered this patent and invention for free to other manufacturers of similar hardware such as National and Sony. Without this, the Compact Cassette, would have never become the world standard. WFA Heylands was born on the same day as Lou Ottens.