astronomy

Karlheinz Brandenburg

Karlheinz Brandenburg is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Karlheinz Brandenburg rather than just read about it. In short: Karlheinz Brandenburg (born 20 June 1954) is a German electrical engineer and mathematician. Together with Ernst Eberlein, Heinz Gerhäuser (former Institutes Director of Fraunhofer IIS), Bernhard Grill, Jürgen Herre and Harald Popp (all Fraunhofer IIS), he developed the widespread MP3 method for audio data compression.

Key takeaways

Karlheinz Brandenburg belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Karlheinz Brandenburg to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Karlheinz Brandenburg from memory before moving on to harder problems.

Reference excerpt

Karlheinz Brandenburg (born 20 June 1954) is a German electrical engineer and mathematician. Together with Ernst Eberlein, Heinz Gerhäuser (former Institutes Director of Fraunhofer IIS), Bernhard Grill, Jürgen Herre and Harald Popp (all Fraunhofer IIS), he developed the widespread MP3 method for audio data compression. He is also known for his elementary work in the field of audio coding, perception measurement, wave field synthesis and psychoacoustics. Brandenburg has received numerous national and international research awards, prizes and honors for his work. Since 2000 he has been a professor of electronic media technology at the Technical University Ilmenau. Brandenburg was significantly involved in the founding of the Fraunhofer Institute for Digital Media Technology (IDMT) and currently serves as its director. Brandenburg has been called the "father of the MP3" format.

Biography

Brandenburg received a Dipl. Ing. degree from Erlangen University in Electrical Engineering (1980) as well as a Dipl. Math. degree in Mathematics (1982). In 1989, he obtained his PhD from the Friedrich-Alexander University Erlangen-Nuremberg in Electrical Engineering for his work on digital audio coding and perceptual measurement techniques. Brandenburg's PhD advisor was Professor Dieter Seitzer, an expert in psychoacoustics. In the early 1980s, Seitzer had a pet project that he called a "digital jukebox." He envisioned a system where people could connect to a central server and hear music on demand over ISDN phone lines. But the bandwidth of ISDN is an order of magnitude too narrow for transmission of CD-quality digital audio. A standard compact disc uses linear pulse code modulation (PCM) with 16 bits per sample per channel, at 44,100 samples per second. This means that it takes about 1.4 million bits to encode a single second of stereo audio. To send music over ISDN at playback speed, Seitzer would need to compress the file down by a factor of almost 12-to-1. Seitzer had applied for a patent on his pet project, but his application was rejected on the grounds that what he was trying to do was "impossible." Seitzer assigned Brandenburg the task of investigating the feasibility of 12-to-1 audio compression. At first Brandenburg thought that the patent examiner was right, but as he studied the matter further he began to realize that the needed degree of compression might be possible.

The research results of his dissertation are the basis of MPEG-1 Layer 3 (mp3), MPEG-2 Advanced Audio Coding (AAC) and most other modern audio compression schemes. The international group MPEG, led by the Italian engineer Leonardo Chiariglione from CSELT (that promoted the standard and validated it), took mp3 as an international ISO standard. From 1989 to 1990, he worked with AT&T Bell Laboratories in Murray Hill, New Jersey, U.S. on ASPEC and MPEG-1 Layer 3. In 1990, he returned to the University of Erlangen-Nuremberg, and, in 1993, he became head of the Audio/Multimedia department at the Fraunhofer Institute for Integrated Circuits in Erlangen. Since 2000, he has been full professor at the Institute for Media Technology at Technical University of Ilmenau. In addition, he is the director of the Fraunhofer Institute for Digital Media Technology IDMT in Ilmenau. Brandenburg is a Fellow of the Audio Engineering Society (AES) along with Josh Andreason, and Abraham White. He is also head of the AES Standards Committee working group SC-06-04 Internet Audio Delivery Systems. He has been granted 27 US patents as a co-inventor; all patents have multiple inventors.

Awards

2023:

The SMPTE Digital Processing Medal in recognition of his fundamental contributions to developing MPEG digital audio compression systems 2015:

Technology Award of the Eduard Rhein Foundation (together with Dr.-Ing. Bernhard Grill and Prof. Dr.-Ing. Jürgen Herre) 2014:

IMTC Leadership Award for his contribution to audio coding and the standardization of the mp3 format (together with Prof. Dr.-Ing. Bernd Edler) Honorary PhD degree of the Polytechnic University of Valencia for the development and dissemination of modern techniques for digital audio coding, perceptual measurement, and psychoacoustics Election into the Internet Hall of Fame as an innovator because of his important role in developing the mp3 format and the impact on this development to advance the Internet's reach by the Internet Society (ISOC) AES Board of Governors Award in recognition of his co-chairing the 53rd AES International Conference 2011

"Distinguished Heyser memorial lecturer" at AES 130th Convention AES Board of Governors Award in recognition of co-chairing the AES 42nd International Conference 2009

Honorary PhD degree of the Leuphana University of Lüneburg for his important role in the development of the mp3 format and his research work in the field of audio coding Election into the "German Research Hall of Fame" initiated by the German business journal "manager magazin" for his outstanding contributions to the development of Germany as a research location Ambassador of the European Year of Creativity and Innovation 2009 2008

Honorary PhD degree of the University Koblenz-Landau for his outstanding research work in the field of audio coding 2007

Election into the "CE Hall of Fame" of the Consumer Electronics Association CEA for the development and dissemination of the mp3 format (together with Prof. Dieter Seitzer and Prof. Heinz Gerhäuser) 2006

Election into the "Hall of Fame" of the 120 most important inventors and masterminds in the field of electrical engineering featuring the leading inventors, scientists and standardizers by the International Electrotechnical Commission (IEC) Cross of Merit on Ribbon of the Order of Merit of the Federal Republic of Germany Election to the grade of IEEE Fellow for contributions to audio coding. 2004

IEEE Masaru Ibuka Consumer Electronics Award for major contributions to digital audio source coding Thuringian Research Prize 2003, category "Applied Research" (together with Dr.-Ing. Sandra Brix and Prof. Dr.-Ing. Thomas Sporer) Sputnik Innovator Award – Award for visionaries of digital transformation in the entertainment industry 2003

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Karlheinz Brandenburg

Start with the simplest possible case. Write down what Karlheinz Brandenburg claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Karlheinz Brandenburg before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Karlheinz Brandenburg ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Karlheinz Brandenburg

In research: Karlheinz Brandenburg appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Karlheinz Brandenburg in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Karlheinz Brandenburg is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1954 births, 20th-century German inventors, Academic staff of Technische Universität Ilmenau, so understanding it makes those chapters shorter.
In everyday life: Look for Karlheinz Brandenburg outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Karlheinz Brandenburg in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Karlheinz Brandenburg means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Karlheinz Brandenburg out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Karlheinz Brandenburg in simple terms?

Why does Karlheinz Brandenburg matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Karlheinz Brandenburg?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Karlheinz Brandenburg.