soundeffectspad

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HOW THE SOUNDS ARE MADE

Not what
it sounds like.

Many sounds in films and on radio were made by someone else, later.

Feet in leather shoes stepping across a gravel pit on a Foley stage, surrounded by props, doors and different floor surfaces
AI-generated image, not a photograph of a real person or place.

Footsteps, rustles and crunches are often performed in a studio after filming. Others were built by slowing, reversing and splicing tape. Here is how sound effects have been made, and where whole libraries of them live.

FOLEYperformed to picture

Pick a technique

Keep in mind

  • Record dialogue clean
  • Add the rest later
  • Anything can make a sound
  • Small sounds, big pictures

THE SHORT ANSWER

Performed, built
or recorded.

Most effects come from one of three places:
a Foley stage, a manipulated recording, or a library.

FOLEY

Footsteps added afterwards

Filming focuses on capturing dialogue clearly, so footsteps and prop handling are often performed and recorded later on a Foley stage, matched to the picture.

Pick a technique

TAPE

Slowed, reversed, spliced

From 1958 the BBC Radiophonic Workshop built sounds by speeding up, slowing down and reversing recordings and splicing tape into loops.

Read the story

ARCHIVES

Libraries of sound

In 2018 the BBC released more than 16,000 sound effects from its archive for personal, educational and research use.

See the numbers

A QUICK TECHNIQUE CHECK

How was
that sound made?

Pick a technique to see how it works. The bar shows how far the finished sound usually is from a plain recording of the real thing.

Technique check

Choose a technique
Field recordingThe real thing

Sounds recorded out in the world. The BBC archive includes recordings made during the Second World War of bombs falling in air raids.

Sound effects libraryReady-made

Pre-recorded effects that can be combined with Foley to build a soundtrack, as USC's film school notes.

FoleyPerformed to picture

Artists perform footsteps and prop handling while watching the scene, and experiment with objects for more abstract effects. For one 1970s BBC effect, cabbages were reportedly used for a good crunchy sound.

Tape manipulationReshaped

Recordings slowed down, sped up or played backwards, then cut and spliced into loops, a technique known as musique concrète.

SynthesizerGenerated

Electronic sound made from scratch. The Radiophonic Workshop bought its first commercial synthesizer in the 1970s, and gradually splicing gave way to synths.

Sources: USC School of Cinematic Arts, What is Foley?; National Science and Media Museum, Birth of the Radiophonic Workshop; CBC Radio on the BBC sound effects archive (2018).

Productions often combine several techniques in one soundtrack.

TWO NUMBERS WORTH KNOWING

A workshop,
and an archive.

One date when electronic effects found a home,
one count of sounds anyone can now hear.

1958

Year the BBC's sound workshop opened

It was formally created on 1 April 1958 at the BBC's Maida Vale studios in London, with little budget, and ran until it closed in 1998.

RADIOPHONIC WORKSHOP · NSMM

16,000+

Sound effects released from the BBC archive in 2018

A mix of studio-made effects and real field recordings, released under the RemArc licence, first created for a project using sound to spark memories in people living with dementia.

BBC ARCHIVE · CBC RADIO

Early cinema sound had its own limits: sound recorded on a shellac disc could store only five minutes at a time, so even landmark 1920s sound films still used silent intertitles.

FOUR WAYS TO MAKE YOUR OWN

Your kitchen
is a sound studio.

The Radiophonic Workshop rescued props from bins and junk rooms. You can start with what you have.

A sound recordist seen from behind holding a microphone with a furry windshield in a misty woodland
AI-generated image, not a photograph of a real person or place.

Step 1

Record the main sound clean

Film-makers prioritise clear dialogue during filming and add footsteps and handling noises afterwards.

Step 2

Perform to the picture

Watch the scene and act out each footstep or rustle in time, as Foley artists do.

Step 3

Experiment with objects

Everyday things can stand in for something else: the workshop used gongs, whistles, bells and household objects.

Step 4

Change the speed

Slow a recording down, speed it up or play it backwards. Even a whistle can end up sounding like something else.

THE RADIOPHONIC WORKSHOP

Bins, tape
and a wobbulator.

A vintage reel-to-reel tape recorder with a long loop of brown magnetic tape running around a microphone stand
AI-generated image, not a photograph of a real person or place.

With little budget, the BBC's Radiophonic Workshop relied on manipulating recorded sound. Staff rescued bits and bobs from bins, skips and the BBC junk room, and borrowed test oscillators, including a 'wobbulator' normally used to test equipment, to make swishy, space-like sounds.

Tape loops could be several metres long. Sounds were sped up, slowed down, reversed and spliced, so even a whistle might end up unrecognisable on a soundtrack. For many people in the UK, these theme tunes, jingles and effects were their first taste of electronic sound.

Questions

Questions on the way

What is Foley?

The process of performing and recording sounds such as footsteps and prop handling to match a film, usually in post-production. It can replace or add to the sound recorded during filming.

Why are footsteps added after filming?

During filming the priority is capturing dialogue clearly, so small details such as footsteps and prop handling are often recorded separately afterwards.

What was the BBC Radiophonic Workshop?

A BBC unit formally created on 1 April 1958 at Maida Vale, London, to make electronic sounds, effects and music for radio and television. It closed in 1998.

What is musique concrète?

A technique that takes recorded sounds and changes them by slowing down, speeding up or playing them backwards, then layers or splices them into a montage.

Can I use BBC sound effects?

In 2018 the BBC released more than 16,000 effects from its archive for personal, educational and research purposes under its RemArc licence. Check the licence terms before using them.

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