different between feedback vs echo

See also Wiktionary:Feedback to give anonymous feedback and comments about Wiktionary.

English

Etymology

From feed +? back.

Pronunciation

• IPA^(key): /?fi?d?bæk/

Noun

feedback (usually uncountable, plural feedbacks)

1. Critical assessment of a process or activity or of their results.

   Synonyms: estimation, assessment, critique, evaluation

2. (electronics, cybernetics, control theory) The part of an output signal that is looped back into the input to control or modify a system.
   • 2007, Oliver Sacks, Musicophilia: Tales of Music and the Brain

     The fact that similar cortical abnormalities can be experimentally induced in monkeys has allowed Michael Merzenich and his colleagues in San Francisco to explore an animal model of focal dystonia, and to demonstrate the abnormal feedback in the sensory loop and the motor misfirings that, once started, grow relentlessly worse.

3. The high-pitched howling noise heard when there is a loop between a microphone and a speaker.

   Synonyms: audio feedback, Larsen effect, howlback, howlround

   • 2002, John Griesemer, No One Thinks of Greenland, Picador (?ISBN)

     A loud feedback screech blasted from a speaker on the wall. It was a hailing signal of some kind.

Hyponyms

• negative feedback
• positive feedback

Coordinate terms

• buffering
• feedforward

Derived terms

• biofeedback
• feedbacker

Related terms

• feedback control
• feedback loop

Descendants

• ? German: Feedback
• ? Japanese: ??????? (f?dobakku)
• ? Spanish: retroalimentación (calque)

Translations

Verb

feedback (third-person singular simple present feedbacks, present participle feedbacking, simple past and past participle feedbacked)

1. (music) To generate the high-frequency sound by allowing a speaker to cause vibration of the sound generator of a musical instrument connected by an amplifier to the speaker.

2. (transitive) To provide informational feedback to.

3. (transitive) To convey by means of specialized communications channel.

Usage notes

• Some are likely to prefer feed back and its inflected forms feeds back, feeding back, or fed back.

Further reading

• feedback on Wikipedia.Wikipedia
• audio feedback on Wikipedia.Wikipedia

Danish

Etymology

From English feedback.

Noun

feedback c (singular definite feedbacken, not used in plural form)

1. feedback (clarification of this definition is needed)

Synonyms

• respons
• tilbagemelding
• tilbagekobling

Finnish

Etymology

Unadapted borrowing from English feedback.

Pronunciation

• IPA^(key): /?fi?dbæk/, [?fi?dbæk]

Noun

feedback

1. (jargon) feedback

Declension

French

Etymology

Borrowed from English feedback.

Pronunciation

• IPA^(key): /fid.bak/

Noun

feedback m (plural feedbacks)

1. feedback (generic)

Further reading

• “feedback” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Portuguese

Etymology

Borrowed from English feedback.

Pronunciation

• (Brazil) IPA^(key): /?fid??.?b?k/, /?fid.?b?k/, /?fid??.?b?.ki/

Noun

feedback m (plural feedbacks)

1. feedback (assessment on information produced)

Spanish

Etymology

Borrowed from English feedback.

Noun

feedback m (plural feedbacks)

1. Alternative form of retroalimentación (“feedback”)

English

Alternative forms

• echoe (obsolete)
• eccho (obsolete)

Etymology

From Middle English eccho, ecco, ekko, from Medieval Latin ecco, from Latin echo, from Ancient Greek ??? (?kh?), from ??? (?kh?, “sound”).

Pronunciation

• enPR: ?k??
  • (Received Pronunciation) IPA^(key): /??k??/
  • (General American) IPA^(key): /??ko?/
• Rhymes: -?k??

Noun

echo (countable and uncountable, plural echoes or echos)

1. A reflected sound that is heard again by its initial observer.
2. An utterance repeating what has just been said.
3. (poetry) A device in verse in which a line ends with a word which recalls the sound of the last word of the preceding line.
4. (figuratively) Sympathetic recognition; response; answer.
   • 1642, Thomas Fuller, The Holy State and the Profane State

     Fame is the echo of actions, resounding them.

   • 1878, Robert Louis Stevenson, Will o' the Mill

     Many kind, and sincere speeches found an echo in his heart.

5. (computing) The displaying on the command line of the command that has just been executed.
6. Echo, the letter E in the ICAO spelling alphabet.
7. (whist, bridge) A signal, played in the same manner as a trump signal, made by a player who holds four or more trumps (or, as played by some, exactly three trumps) and whose partner has led trumps or signalled for trumps.
8. (whist, bridge) A signal showing the number held of a plain suit when a high card in that suit is led by one's partner.
9. (medicine, colloquial, uncountable) Clipping of echocardiography.
10. (medicine, colloquial, countable) Clipping of echocardiogram.

Derived terms

Translations

Verb

echo (third-person singular simple present echoes, present participle echoing, simple past and past participle echoed)

1. (of a sound or sound waves, intransitive) To reflect off a surface and return.
2. (transitive) To reflect back (a sound).

   • Those peals are echoed by the Trojan throng.

   • 1827, John Keble, The Christian Year, Christmas Day

     The wondrous sound / Is echoed on forever.

3. (by extension, transitive) To repeat (another's speech, opinion, etc.).

4. (computing, transitive) To repeat its input as input to some other device or system.
5. (intransitive, whist, bridge) To give the echo signal, informing one's partner about cards one holds.

Synonyms

• See also Thesaurus:imitate

Translations

Anagrams

• Choe, HCEO, oche

Asturian

Verb

echo

1. first-person singular present indicative of echar

Czech

Pronunciation

• IPA^(key): /?xo/

Noun

echo n

1. echo (reflected sound)

Synonyms

• ozv?na

Further reading

• echo in P?íru?ní slovník jazyka ?eského, 1935–1957
• echo in Slovník spisovného jazyka ?eského, 1960–1971, 1989

Dutch

Pronunciation

• IPA^(key): /??.xo?/
• Hyphenation: echo

Etymology 1

From Middle Dutch echo, from Latin ?ch?, from Ancient Greek ??? (?kh?), from ??? (?kh?, “sound”).

Noun

echo m (plural echo's, diminutive echootje n)

1. echo

   Synonym: weergalm

Derived terms

• echoën

Etymology 2

See the etymology of the main entry.

Verb

echo

1. first-person singular present indicative of echoën
2. imperative of echoën

Ladino

Noun

echo m (Latin spelling, Hebrew spelling ??????)

1. work

Latin

Etymology

From Ancient Greek ??? (?kh?).

Pronunciation

• (Classical) IPA^(key): /?e?.k?o?/, [?e?k?o?]
• (Ecclesiastical) IPA^(key): /?e.ko/, [???k?]

Noun

?ch? f (genitive ?ch?s); fourth declension

1. echo

Declension

Fourth-declension noun (nominative/vocative singular in -?).

Other forms:

• Accusative singular ?ch? and ?ch?n; only these forms and the nominative singular are attested in ancient Latin, not the other forms mentioned above.

References

• echo in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• echo in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette
• echo in The Perseus Project (1999) Perseus Encyclopedia?^[1]
• echo in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
• echo in William Smith, editor (1848) A Dictionary of Greek Biography and Mythology, London: John Murray

Polish

Pronunciation

• IPA^(key): /??.x?/

Noun

echo n

1. echo

Declension

Portuguese

Noun

echo m (plural echos)

1. Obsolete spelling of eco (used in Portugal until September 1911 and died out in Brazil during the 1920s).

Spanish

Pronunciation

• IPA^(key): /?et??o/, [?e.t??o]
• Homophone: hecho
• Rhymes: -et?o

Verb

echo

1. First-person singular (yo) present indicative form of echar.