Send tape echo echo delay (more commonly known as STEED, alternatively known as single tape echo and echo delay
) is a technique used in
magnetic tape sound recording to apply a
delay effect
Delay is an audio signal processing technique that records an input signal to a storage medium and then plays it back after a period of time. When the delayed playback is mixed with the live audio, it creates an echo-like effect, whereby the or ...
using
tape loops and
echo chambers.
In 2006, while publicising his memoir (''Here, There, and Everywhere: My Life Recording the Music of The Beatles''), recording engineer
Geoff Emerick stated that "God only knows" how the effect worked.
Technique

The technique was developed at
EMI/Abbey Road Studios in the late 1950s, by EMI engineer
Gwynne Stock.
[Kehew & Ryan, Recording The Beatles,p. 286] It involved delaying the recorded (dry) signal, sending it into the studio's
echo chamber using a tape machine. The dry signal (without delay) was also sent to the chamber via the tape machine's
replay head. The resulting sound was picked up by two
condenser microphones. These microphones then
fed the wet signal back to the recording console.
The amount of
feedback
Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop. The system can then be said to ''feed back'' into itself. The notion of cause-and-effect has to be handled ...
could be controlled allowing multiple delays to be sent to the reverb chamber, which could lengthen the effect's decay time.
An identical technique was used for the production of ''
Anthology 1'' in 1995, where speakers were used to play the sound within the echo chamber.
Use
One notable example of the use of STEED is on
George Harrison
George Harrison (25 February 1943 – 29 November 2001) was an English musician and singer-songwriter who achieved international fame as the lead guitarist of the Beatles. Sometimes called "the quiet Beatle", Harrison embraced Indian c ...
's lead vocal on "
Everybody's Trying to Be My Baby" (1964).
Mark Lewisohn describes the effect as a "vast amount", and likened Harrison's vocal to singing inside a
tin can. He notes that some of the musical backing tracks were also affected by the technique due to
microphone spill from Harrison's headphones.
Other examples of the use of STEED on Beatles recordings include the vocal
fermata in "
Paperback Writer" (1966),
and
Paul McCartney's piano on "
Birthday" (1968).
The effect was also used on "
Revolution 9" (1968),
and was used in the mixing of tracks for ''
Anthology 1'' in 1995.
See also
*
Artificial double tracking, a technique developed by EMI/Abbey Road's
Ken Townsend
Footnotes
Sources
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{{DEFAULTSORT:Send Tape Echo Echo Delay
Audio effects
The Beatles music