science

Phone-sync

Phone-sync is a 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 Phone-sync rather than just read about it. In short: A phone-sync (also known as a tape-sync, a simul-rec, or a double-ender) was a technique used to conduct televised interviews over long distances in the 1980s before satellite television became commonplace, in order to provide video to what would otherwise be an audio-only interview. It was commonplace in such news programs as The Journal on CBC Television.

Key takeaways

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

Reference excerpt

A phone-sync (also known as a tape-sync, a simul-rec, or a double-ender) was a technique used to conduct televised interviews over long distances in the 1980s before satellite television became commonplace, in order to provide video to what would otherwise be an audio-only interview. It was commonplace in such news programs as The Journal on CBC Television. A standard Tape sync works as follows: an interviewer, usually in a television studio, is videotaped conducting an interview via a long-distance phone call to the interviewee in another part of the world. This interviewee, often in a studio in front of a background representing the city in which he or she is located, is videotaped as he or she participates in the interview. The two videotapes are then sent to the interviewer's production team to be synchronized through video editing. Cuts between shots of the interviewer and interviewee are made accordingly, and the higher-quality sound of the videotapes are used instead of the telephone audio. For effect, the interviewer may be taped looking into a bluescreen or greenscreen, into which the video of the interviewee would at this point be resized if necessary and inserted using chroma key. The double-ender technique has become much less commonplace with the proliferation of live satellite television feeds and video over Internet (Skype, etc.), but is still used today when such technology is not available. The double-ender technique can also be done with audio-only mediums, such as radio or podcasting. Syndicated radio show interviews are often done as a double-ender, with the host in their studio, and the guests recording in their own city, in the studio of their local affiliate. Double-ender audio interviews have become more common with the rise in popularity of podcasting. The result is a cast that sounds like the hosts and guests are in the same room, when they're actually in different cities.

References

Further reading Marcus D. Rosenbaum; John Dinges & Deborah Amos (1992). Sound reporting: the National Public Radio guide to radio journalism and production. Kendall/Hunt Pub. Co. pp. 286, 320, 323. ISBN 978-0-8403-7202-4. Larry Josephson (1983). "The Phone-Sync". Telling the story: the National Public Radio guide to radio journalism. Kendall/Hunt Pub. Co. p. 213. ISBN 978-0-8403-2861-8. "THE PHONE-SYNC". DB: The Sound Engineering Magazine. Vol. 17. March 1983. p. 116.

Worked examples

Example 1 — a first encounter with Phone-sync

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

In research: Phone-sync appears in 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 Phone-sync 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: Phone-sync is common in secondary-school and first-year university syllabi. It links to neighbouring topics Broadcast journalism, Television technology, so understanding it makes those chapters shorter.
In everyday life: Look for Phone-sync 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 Phone-sync in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Phone-sync 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 Phone-sync out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Phone-sync in simple terms?

Why does Phone-sync matter?

Because it connects several 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 Phone-sync?

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 Phone-sync.