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SoundDroid

SoundDroid is a computer science 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 SoundDroid rather than just read about it. In short: The SoundDroid is an early digital audio workstation designed and developed between 1980 and 1987 by a team of engineers led by James A. Moorer at Lucasfilm.

Key takeaways

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

Reference excerpt

The SoundDroid is an early digital audio workstation designed and developed between 1980 and 1987 by a team of engineers led by James A. Moorer at Lucasfilm. It was a hard-disk–based, nonlinear audio editor developed on the Audio Signal Processor (ASP), a large-scale digital signal processor for real-time, multichannel equalization and audio mixing. The ASP was connected to a Sun-1 workstation, and with a physical console, could replace multi-slider mixers and provide new tools for audio spotting, editing, and mixing.

History George Lucas hired Ed Catmull as The Empire Strikes Back began production, charging him with building a computer division to solve a number of problems that were painful and expensive during the original Star Wars production. Catmull built an in-house project to produce 3 specific digital tools for filmmaking--an image compositor, a nonlinear picture editor, and a digital audio workstation. Experts were drafted to lead each project, and Catmull hired James A. Moorer, at the time one of the leading figures in the new realm of digital audio. The audio project that became SoundDroid was done in close collaboration with the Lucasfilm post-production division, Sprocket Systems, and in 1985 spun out along with the editing project as part of a joint venture called The Droid Works to market new tools for post production. The graphics project--what became Pixar was more complicated and sold off separately, to Steve Jobs in this same period. In the early 1980s the audio signal processor (ASP) was tested to solve a number of post production problems. Noteworthy was the development of noise subtraction where a "fingerprint" of recorded noise could be subtracted from an audio wave, resulting in an otherwise-impossible cleaning. This was used on the Milos Foreman film Amadeaus being post produced in Berkeley, and for which one scene would have been unusable if not for the technology. For Lucasfilm, the ASP was utilized to add Doppler shift to recordings-- to arrows being shot at Indiana Jones in "Temple of Doom." Moorer developed an acoustic logo for the SoundDroid, a sound that would run through all the frequencies and spin through a range of speakers and would be dramatic. The SoundDroid development was closely aligned with the TAP/THX program at Lucasfilm to improve movie theater sound and experience. The sound Moorer invented for THX he called "Deep Note." It was the sound played by the SoundDroid when it was booted up. Deposits for SoundDroids were taken from a few big players in digital audio--Stevie Wonder and Michael Jackson-- but only one SoundDroid prototype was ever built and the product was never commercialized. EditDroid and SoundDroid were the beginnings of the desktop tools digital revolution. The executive team at The Droid Works left Lucasfilm in 1986 to start Sonic Solutions, and along with James Moorer developed the NoNoise product to denoise the corpus of analog audio recordings that were about to be transferred to the new CD digital format.

Capabilities Complete with a trackball, touch-sensitive displays, moving faders, and a jog-shuttle wheel, the SoundDroid included programs for sound synthesis, digital reverberation, recording, editing and mixing.

References

Sources Kunkes, Michael (January 1, 2006), Digital Dreamcatcher: Droidmaker Chronicles the Early Years of Lucasfilm, The Motion Picture Editor Guild, archived from the original on June 13, 2016. Leider, Colby (2004). Digital Audio Workstation: Mixing, Recording, and Mastering on Your Mac Or PC. McGraw-Hill. p. 398. ISBN 0-07-142286-2. Rubin, Michael (2005). Droidmaker: George Lucas and the Digital Revolution. Triad. p. 518. ISBN 0-937404-67-5. Tracy, Eleanor Johnson (1985), "Droids for Sale: Star Wars' George Lucas is pushing new technology", Fortune, CNN, archived from the original on April 17, 2008.

Worked examples

Example 1 — a first encounter with SoundDroid

Start with the simplest possible case. Write down what SoundDroid claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, 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 SoundDroid 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 SoundDroid 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 SoundDroid

In research
SoundDroid appears in computer science 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 SoundDroid 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
SoundDroid is common in secondary-school and first-year university syllabi. It links to neighbouring topics Digital audio workstation software, Digital signal processing, Lucasfilm, so understanding it makes those chapters shorter.
In everyday life
Look for SoundDroid 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 SoundDroid in 20 minutes

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

Frequently asked questions

What is SoundDroid in simple terms?

The SoundDroid is an early digital audio workstation designed and developed between 1980 and 1987 by a team of engineers led by James A. Moorer at Lucasfilm.

Why does SoundDroid matter?

Because it connects several computer science 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 SoundDroid?

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 SoundDroid.

Tags

  • Digital audio workstation software
  • Digital signal processing
  • Lucasfilm

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