Interpreting: consecutive and simultaneous

In short

Interpreting is the oral (or signed) transfer of a spoken message from a source language into a target language in real time; consecutive interpreting happens after the speaker pauses, simultaneous interpreting happens while the speaker is still talking. It is examined in BA/MA Foreign Language programmes as a separate practical and theory paper — modes, note-taking systems, booth technique, ethics, equipment standards — and it is the single highest-paid skill a language graduate can carry. In India it is used by the Ministry of External Affairs, embassies and consulates, the courts and police under the criminal procedure framework (the Bharatiya Nagarik Suraksha Sanhita, 2023, which replaced the former CrPC 1973) and Article 22(1) rights, Hindi–English parliamentary and legislature interpreting, conference organisers, Japanese and German manufacturing plants (Maruti Suzuki, Toyota Kirloskar, Honda, Bosch, Mercedes-Benz, Hitachi), BPO/KPO interpretation desks and medical tourism hospitals. Freelance conference interpreters in Delhi, Mumbai and Bengaluru typically quote per half-day or full-day, usually in the ₹15,000–₹45,000 per day band depending on language, rarity and client, while in-house factory interpreters are salaried; rates vary widely and should be checked against current market practice.

Explained

What interpreting is, and how it differs from translation

• Interpreting works on speech, in real time, once, with no chance to revise; translation works on text, with time, revision, dictionaries and a final product that can be checked.
• The interpreter transfers sense (sens), not words: the Paris School (Danica Seleskovitch, Marianne Lederer) théorie du sens / interpretive theory describes a three-stage process — comprehension, deverbalisation (stripping the sense from its linguistic form), re-expression.
• Deverbalisation is the core examinable concept: if you keep the source words in your head you will produce calques and run out of memory; if you keep the meaning you can reformulate naturally.
• Products are ephemeral — judged on fidelity to sense, completeness, delivery, voice and terminology, not on elegance of wording.
• Fidelity in interpreting means the same communicative effect, not the same number of words; adding, omitting or softening content is an error, but restructuring is normal and necessary.

Language classification and directionality (AIIC system)

• A language: the interpreter's native or strictly equivalent language — can interpret into it from all others.
• B language: a language of which the interpreter has perfect command though not native — can work into it (this is called retour).
• C language: passive — understood fully, worked from only, never into.
• Active languages = A + B (worked into); passive languages = C (worked from only).
• Indian reality: most interpreters are A = Hindi or another Indian language, B = English, C or B = French/German/Japanese/Spanish/Chinese/Korean. A Hindi A + English B + Japanese C profile is common in automotive work.
• Relay (pivot): when no interpreter has the needed language pair, one interprets into a bridge language and others take it from there; adds delay, and compounds any error of the pivot.

Consecutive interpreting

• Definition: the speaker talks for a stretch (typically 1–7 minutes), stops, and the interpreter renders the whole passage. Classic/long consecutive uses notes; short consecutive handles 1–3 sentences largely from memory.
• Process in steps: (1) active listening for sense and structure; (2) analysis — identify the main idea, the links, the speaker's intention; (3) note-taking as a memory prompt; (4) short-term memory retention; (5) re-expression reading the notes, with eye contact and natural delivery.
• Note-taking is not shorthand and not dictation. Notes record ideas, links and the unmemorisable; the memory records the rest.
• Rozan's seven principles (Jean-François Rozan, 1956) — the standard examinable list: (1) note the idea, not the word; (2) use abbreviations; (3) note links (connectors); (4) note negation; (5) note emphasis; (6) verticality — write down the page, not across; (7) shift/décalage — indent so that position on the page shows the function (subject, verb, object).
• Matyssek system (Heinz Matyssek) is the main alternative: a language-independent symbol system rather than abbreviated words.
• Practical note conventions: diagonal layout, one idea per line, a vertical line between segments, arrows for consequence/increase/decrease, = for "is/means", ≠ for negation, // for end of idea, underlining ×1/×2/×3 for degrees of emphasis, a box for a date, and numbers, names, lists and technical terms always written down because they cannot be reconstructed from sense.
• The unmemorisable four: numbers, proper names, enumerations, and technical/legal terms — note these first, always.
• Advantages: no equipment, high accuracy, works in small rooms, courts, factories, hospital bedsides, site visits, negotiations; the interpreter can ask for repetition.
• Limitations: roughly doubles meeting time; only one language pair practicable at a time; heavy memory and note load; audience attention drops.

Simultaneous interpreting

• Definition: the interpreter listens and speaks at the same time, lagging the speaker by a few seconds, normally from a soundproof booth with headphones and a microphone; delegates listen on receivers.
• Décalage / ear-voice span (EVS): the lag between hearing and speaking, usually about 2–4 seconds (longer for verb-final languages such as Japanese, German subordinate clauses or Korean, where the interpreter must wait for the verb).
• Cognitive model — Gile's Effort Model: simultaneous interpreting runs Listening & Analysis (L) + Short-term Memory (M) + Production (P) + Coordination (C), and the sum must stay below available capacity; overload causes omissions and errors. The tightrope hypothesis says interpreters normally work near capacity saturation, which is why errors occur even with easy text.
• Standard coping strategies/tactics: anticipation (predicting the end of a sentence), salami technique (chopping a long sentence into short target sentences), generalisation, compression/condensation, syntactic restructuring, waiting, stalling with neutral filler, approximation, and explicit correction ("…sorry, 2.4 per cent").
• Sub-modes:
  • Booth simultaneous (conference interpreting) — the normal mode for multilingual conferences.
  • Chuchotage / whispered interpreting — simultaneous whispering to 1–2 listeners with no equipment; standard at bilateral business meetings and in Indian courtrooms and factory shop floors.
  • Bidule / tour-guide system — portable transmitter and receivers, no booth; acceptable for site visits, not for full conferences.
  • Sight translation — reading a written document aloud in the other language; often required for exhibits in court and for documents tabled mid-meeting.
  • Simultaneous with text — the interpreter has the speech in writing and follows the speaker, who may depart from it.
  • Remote simultaneous interpreting (RSI) — Zoom/Interprefy/KUDO-style platforms; grew sharply after 2020 and now a normal part of the Indian market.
• Teamwork rule: simultaneous is done in teams of two per booth per language, turns of about 20–30 minutes, because quality falls measurably after roughly 30 minutes of continuous work. A single interpreter is used only for very short meetings.
• Advantages: no time penalty, many languages at once, large audiences, speaker's flow preserved.
• Limitations: costly (booth, console, technician, two interpreters per language), high error risk under fast or read-out speech, cannot ask for repetition, physically and mentally exhausting; unsuited to legal testimony requiring verbatim accuracy on the record.

Equipment, standards and working conditions

• Booth standards: ISO 2603 covers permanent (built-in) booths and ISO 4043 covers mobile booths — dimensions, sound insulation, ventilation, lighting, clear view of the speaker and screen. ISO 20109 covers equipment, and ISO 20108 the quality of sound and image delivered to the interpreter; ISO 24019 addresses simultaneous interpreting delivery platforms (RSI). Quote these by subject if unsure of the edition year.
• Direct view of the rostrum, the screen and the delegates is a requirement, not a preference — body language and slides carry meaning.
• Sound quality is the main technical cause of error: narrow-band or compressed audio (and delegates speaking through laptop mics) strips the frequencies needed to distinguish numbers and consonants. Hence the modern insistence on full-band audio and wired headset microphones.
• ISO 18841 sets general requirements for interpreting services; ISO 20228 covers legal interpreting. India has no separate BIS standard for interpreting services as of November 2026.
• Documents, agenda, speaker list, slides and glossaries should reach the interpreter in advance — standard contractual practice, and the single biggest determinant of quality.
• Health and safety: hearing protection against acoustic shock, booth ventilation, and screen-based fatigue in RSI.

Professional practice, ethics and the Indian institutional setting

• AIIC (International Association of Conference Interpreters) is the global professional body; its Code of Professional Ethics requires strict secrecy, acceptance only of assignments one is competent for, and no personal gain from confidential information. India's small AIIC membership means most work is contracted directly or through agencies.
• Core ethical duties examined: confidentiality, impartiality/neutrality, accuracy and completeness, role boundaries (interpret, do not advise or advocate), disclosure of conflicts of interest, professional development.
• First person rule: the interpreter speaks in the first person as the speaker ("I propose…"), not "he says that he proposes". Third-person reporting is used only in some community and child-related settings.
• Court and police interpreting in India: the right of an accused to be informed of grounds of arrest in a language they understand flows from Article 22(1) of the Constitution, and the criminal procedure framework (now the Bharatiya Nagarik Suraksha Sanhita, 2023, which replaced the CrPC 1973) requires evidence to be taken in a language the court and the accused can follow; Section 272-type provisions on the language of courts and the recording of evidence have been carried over — name the provision rather than quoting a section number unless certain. Courts normally use consecutive or whispered interpreting, with sight translation of exhibits.
• Government and diplomacy: the Ministry of External Affairs maintains interpreter capacity for bilateral visits and multilateral meetings; interpreters for Hindi and foreign languages are engaged for state visits, and the Rajbhasha framework (Official Languages Act, 1963 and the Official Languages Rules) drives Hindi–English interpreting in Parliament, parliamentary committees and government conferences.
• Sign language interpreting is a parallel profession: the Rights of Persons with Disabilities Act, 2016 requires accessible communication, and the Indian Sign Language Research and Training Centre (ISLRTC) under the Ministry of Social Justice and Empowerment trains and certifies ISL interpreters.
• Training and assessment in India: JNU, University of Delhi, EFLU, Pondicherry University, Jamia Millia Islamia, Banaras Hindu University, Savitribai Phule Pune University, Alliance Française/Goethe-Institut/Japan Foundation/Instituto Cervantes/Confucius-linked institutes, plus the National Translation Mission (CIIL Mysuru). Entry proficiency usually expected: B2–C1 on the CEFR (or JLPT N2–N1 for Japanese, HSK 5–6 for Chinese, TOPIK 5–6 for Korean) before interpreting training begins.
• Exercises examined as a syllabus item: shadowing (repeating the speaker in the same language), paraphrasing, dual-task exercises (listening while counting backwards), memory/recall drills without notes, cloze and anticipation drills, number drills, sight translation, and glossary building by domain.

Key points

• Interpreting — oral/signed, real-time, one-off transfer of sense; translation is written and revisable.
• Consecutive — interpreter renders after the speaker pauses; uses notes plus memory; needs no equipment; roughly doubles meeting time.
• Simultaneous — interpreter works while the speaker talks, from a booth with console and headset; no time penalty, high cost, high cognitive load.
• Deverbalisation — detaching sense from source wording; the central idea of the Paris School interpretive theory.
• Rozan's seven principles — idea not word, abbreviation, links, negation, emphasis, verticality, shift.
• The unmemorisable four — numbers, names, enumerations, technical terms: always noted, never trusted to memory.
• Décalage / EVS — the 2–4 second lag in simultaneous; longer for verb-final languages like Japanese, Korean and German.
• Gile's Effort Model — L + M + P + C must stay within capacity; saturation explains routine errors (tightrope hypothesis).
• Salami technique — split a long source sentence into several short target sentences.
• Anticipation — predicting the sentence end from collocation, context and genre; essential for SOV languages.
• A / B / C languages — into all (A), into with perfect command (B, "retour"), from only (C, passive).
• Relay/pivot — interpreting via a bridge language; adds lag and propagates the pivot's errors.
• Chuchotage — whispered simultaneous for one or two listeners, no equipment; most common Indian courtroom and shop-floor mode.
• Sight translation — reading a written text aloud in the target language, on the spot.
• Team of two, 20–30 minute turns — the professional norm for simultaneous; quality drops after about 30 minutes.
• ISO 2603 / 4043 — permanent and mobile booth requirements (size, insulation, ventilation, view); ISO 18841 general interpreting services, ISO 20228 legal interpreting.
• First person rule — the interpreter voices the speaker in the first person.
• Ethics — confidentiality, impartiality, accuracy, competence, role boundaries (AIIC code).

Formulas and examples

Example 1 — Consecutive versus simultaneous for a conference day. A Delhi conference has 6 hours of speeches. With consecutive and k = 1.0, total floor time = 6 × 2 = 12 hours — impossible in a one-day programme. With simultaneous, the programme stays at 6 hours, so the organiser must either halve the content or hire booths. Conclusion: above about 90 minutes of content, or more than one target language, simultaneous is the only workable mode.

Example 2 — Team size and cost for a three-language conference. A two-day conference in Mumbai runs in English (floor) with French, Japanese and Hindi output.

• Booths = 3 (one per target language).
• Interpreters = 3 × 2 = 6, each for 2 days = 12 interpreter-days.
• At ₹30,000 per interpreter-day, fees = 12 × 30,000 = ₹3,60,000.
• Equipment: 3 mobile booths + console + 3 technicians-days, say ₹1,20,000 for two days, plus 200 receivers at ₹150 per receiver-day = 200 × 150 × 2 = ₹60,000.
• Total ≈ 3,60,000 + 1,20,000 + 60,000 = ₹5,40,000, before GST. Interpreting services attract GST at the standard 18% rate for business clients, so ≈ 5,40,000 × 1.18 = ₹6,37,200 — confirm the classification with the client's tax adviser, since place-of-supply and export-of-service rules change the treatment.

Example 3 — Décalage and memory load. A Japanese speaker says a 22-second sentence whose main verb comes at the end. The interpreter cannot start the English main clause until the verb is known.

• If the interpreter waits for the verb, EVS ≈ 20 s and she must hold ~55 words in memory — beyond capacity.
• Using anticipation plus the salami technique: she renders the opening adverbials and subject as a short sentence at EVS ≈ 3 s, then the object as a second sentence, then the verb-based conclusion ("…and that is why the line was stopped").
• Result: three short English sentences, EVS held at 3–4 s, memory load ~10 words. This is the standard examinable answer for SOV languages.

Example 4 — Note-taking density. A speaker delivers 3 minutes at 120 words/min = 360 words. Good consecutive notes for that passage run to roughly 40–60 symbols/abbreviations over 1–1.5 A5 pages — about 1 noted item per 7 words. A student who writes 250 words has taken dictation, will read instead of communicate, and will run out of time; a student who writes 8 items will lose the numbers and names.

Example 5 — Number drill accuracy. In a test, 30 figures are read out; a student renders 24 correctly, converts 4 wrongly between the Indian system (lakh/crore) and the international system (million/billion), and omits 2.

• Accuracy = 24/30 = 80%; error rate = 20%.
• Conversions to memorise: 1 lakh = 10⁵ = 0.1 million; 1 crore = 10⁷ = 10 million; 1 billion = 10⁹ = 100 crore; 1 trillion = 10¹² = 1 lakh crore.
• So "₹2,500 crore" = 2,500 × 10⁷ = ₹2.5 × 10¹⁰ = ₹25 billion; and "€40 million" = 40 × 10⁶ = ₹ equivalent of 4 crore euros. Numbers are a scored component in most interpreting exams.

Where it is used

• Diplomacy and government: Ministry of External Affairs state visits, embassy and consulate events, Hindi–English interpreting in Parliament and parliamentary committees under the Official Languages framework, international summits hosted in India.
• Manufacturing and engineering: Japanese, German and Korean plants and projects — Maruti Suzuki, Toyota Kirloskar, Honda, Hitachi, Bosch, Mercedes-Benz, Hyundai, Samsung, LG, Daikin — where in-house interpreters (often called Japanese/German Language Specialists) interpret shop-floor kaizen meetings, audits, training and expat–staff communication.
• Legal and public services: courts, police stations, tribunals, immigration, hospitals and medical-tourism desks; whispered and consecutive modes, plus ISL interpreting under the Rights of Persons with Disabilities Act, 2016.
• Business and media: BPO/KPO interpretation desks and over-the-phone interpreting (OPI) for Teleperformance, Concentrix and similar, investor calls, trade fairs (ITPO, Auto Expo, India Mobile Congress), film festivals and press conferences.
• Conference industry: PCOs and AV firms providing ISO-compliant booths, consoles and technicians; freelance conference interpreters hired per day with a team of two per language.
• Teaching and remote work: interpreting trainers at JNU, EFLU, DU and the cultural institutes; RSI platform work for clients abroad, which makes location irrelevant and brings Indian interpreters into European and East Asian markets.

Interview questions

• Q: What is the difference between consecutive and simultaneous interpreting? A: In consecutive the interpreter speaks after the speaker pauses, using notes and memory and roughly doubling meeting time; in simultaneous the interpreter speaks while the speaker continues, from a booth, with no time penalty but much higher cognitive load and cost.
• Q: What is deverbalisation and why does it matter? A: It is detaching the sense of the message from the source words before re-expressing it; without it the interpreter produces word-for-word calques and overloads memory.
• Q: Are consecutive notes a form of shorthand? A: No — shorthand records words to be read back, while interpreting notes record ideas, links and the unmemorisable items as prompts for a memory-based rendition.
• Q: Name Rozan's seven principles. A: Note the idea not the word, abbreviate, note links, note negation, note emphasis, use verticality, and use shift (indentation) to show function.
• Q: What do you always write down in notes? A: Numbers, proper names, enumerations and technical or legal terms, because they cannot be reconstructed from sense.
• Q: What is décalage, and why is it longer for Japanese or German? A: It is the ear-voice span between hearing and speaking, normally 2–4 seconds; verb-final structures force the interpreter to wait for the verb or to anticipate it.
• Q: Why are simultaneous interpreters hired in pairs? A: Quality falls measurably after about 30 minutes of continuous work, so a team of two per language per booth alternates in 20–30 minute turns.
• Q: What are your A, B and C languages? A: A is my native-level language, which I interpret into from all others; B is a language I command perfectly and can work into (retour); C is passive, understood fully but worked from only.
• Q: What is relay interpreting and what is its risk? A: Interpreting via a pivot language when no one has the direct pair; it adds lag and any error or omission by the pivot passes to every other booth.
• Q: The speaker makes a factual mistake or an offensive remark. What do you do? A: Interpret it faithfully — the interpreter is not the author or the editor; if it is an evident slip of the tongue, such as a wrong number, a brief correction or a flag to the chair is acceptable.
• Q: You missed a number. How do you handle it live? A: Either use a safe generalisation ("a figure in the low twenties"), or ask the speaker in consecutive, or correct yourself on the next turn in simultaneous — never invent a number.
• Q: Which standards govern interpreting booths and services? A: ISO 2603 for permanent booths and ISO 4043 for mobile booths, with ISO 20109 for equipment and ISO 20108 for sound and image quality delivered to the interpreter; ISO 18841 covers interpreting services generally and ISO 20228 legal interpreting.
• Q: How do you prepare for a technical assignment in two days? A: Get the agenda, slides, speaker list and past minutes; build a bilingual glossary of the domain's 200–400 key terms; read parallel texts in both languages; and clarify names, units and acronyms with the organiser.

Common mistakes

• Taking near-verbatim notes in consecutive, then reading them out with no eye contact — penalised in every practical exam.
• Using the source language and vertical layout inconsistently; notes must be fast and legible to the interpreter alone, with links and negation clearly marked.
• Starting too late in simultaneous and then falling behind, or starting too early and getting stranded when the sentence turns.
• Mis-converting lakh/crore to million/billion, and misplacing decimals and percentages — the most common major error in Indian interpreting tests.
• Interpreting in the third person ("he says that…") in a conference or court setting, which breaks the first person rule and lengthens the output.
• Stepping out of role: explaining, advising, softening a rude remark or answering for the client, instead of interpreting it.
• Accepting an assignment on a domain never prepared, or arriving without a glossary, and assuming language fluency alone is enough.
• Treating RSI as equivalent to a booth without checking the audio, bandwidth and handover arrangements — poor sound is the main source of error.

Related topics

Translation · Machine translation, post-editing and localisation · Subtitling and dubbing · Contrastive grammar and stylistics · Business and technical language for the workplace · Language proficiency frameworks (CEFR, JLPT, HSK, TOPIK)