Transcription for speech AI

Multilingual transcription with a real review pass

Our transcription service turns audio and video into text your team can train on: verbatim or clean, with timestamps and speaker labels, in languages and accents from around the world. A review pass runs before anything is delivered, so what you get isn't raw speech-to-text output.

The short answer

What is transcription for AI training data?

Transcription for AI turns recorded speech into text that a speech model can train on or be tested against. Each transcript stays paired with its audio, so words, pauses, speaker changes and background sounds all have to be written the same way every time.

That's a different job from meeting notes or subtitles, which are written for people to read. A reader doesn't miss a dropped "um" or a tidied sentence. A speech recognition model trained on that text learns that those sounds were never there.

Speech-to-text software can give you a first draft. For training data, someone who knows the language and the accent still has to get it right, and noisy calls and speech that switches languages are where automatic drafts tend to slip. Our speech data page takes one recording apart, from the audio to the speaker details. For how this differs from transcription written for people, see the transcription guide.

Transcription at IndecalAI

Media
Audio and video recordings.
Style
Verbatim or clean, whichever your model needs.
Extras
Timestamps, speaker labels and tags for non-speech sounds.
People
Transcribers who know the language and the accent, from a network of 30,000+ people worldwide.
Languages
Languages worldwide, with deep coverage of Indian languages well past Hindi and English, mixed-language speech included.
Quality
A multi-level review before anything is delivered.
Tools
Our own Transcription tool.
Recordings
Yours, or ones recorded through our data collection and conversational AI data services.
Your data
NDA first, used only for the agreed scope, returned or deleted when you ask.
Contact
One named contact who replies within one business day.
First step
A small free sample before you commit.
Company
Based in Ahmedabad, India, since 2021, with 150+ projects delivered.
What you get

Transcripts your model can train on

Verbatim or clean, timestamped and speaker-labeled, in the languages and accents you need. The work happens in our own Transcription tool. The recordings can come from you, or from our data collection and conversational AI data services.

Verbatim or clean

Verbatim keeps the ums, false starts and repeats. Clean strips them out so the text reads like writing. Tell us what your model will do and we'll say which fits.

For speech recognition (verbatim), call search and summaries (clean)

Timestamps

Every line tied to the moment it was said, so text and audio line up when your model trains on both.

For speech recognition, subtitles and audio search

Speaker labels

Each turn marked with who said it, including the moments when two people talk over each other.

For call analytics, meeting notes and voice bots

Sound tags

Noise, laughter, music and silence marked with the tags you choose, so your model learns what isn't speech too.

For speech recognition in noisy places

Mixed-language speech

Speech in India often mixes languages inside one sentence. We agree how it gets written before the first file, and keep it that way.

For speech models for Indian users

Video

The speech in your video transcribed and timed to the picture, from interviews and screen recordings to street footage.

For video understanding and multimodal models

The samples on these cards are illustrations, not client data.

Where it's used

What transcripts are used for

Common jobs for transcribed speech, and what each one needs from the transcript. They're examples of the work, not a client list.

Training speech recognition

Verbatim transcripts paired with their audio teach a model to turn speech into text, fillers and false starts included.

Verbatim or clean

Voice bots and IVR

Real calls, transcribed with speaker labels, show a bot how callers actually phrase things, which is rarely how the script says they will.

Conversational AI data

Call center analytics

Agent and customer kept apart in the transcript, so a model can learn who asked what and how the call was handled.

Speaker labels

Testing a speech model

A reviewed transcript is the reference that speech-to-text output gets scored against. If the reference is wrong, so is the score.

Data and model evaluation

Video and media

Speech in video written down with timestamps that line up with the footage, so text and picture stay in step.

Video transcription

Speech that mixes languages

Hindi and English in one sentence, written the way you decide: the original scripts, one script, or Latin letters.

Mixed-language speech

Before we start

Rules to agree once

Write these down once and every transcriber follows the same rules, so the dataset stays consistent from the first file to the last.

Numbers, dates and times

Whether they're written as words or digits, and in which format. Decide it once, or every transcriber picks their own.

Names, brands and terms

One spelling for every name, brand and technical term, kept in a list the whole team works from.

Audio nobody can understand

What to write when a stretch can't be made out, so a guess never slips into your training data.

Speakers and overlap

How to mark who's speaking, and what to do when two people talk at once. Non-speech sounds like noise, laughter or silence get their tags here too.

Language and accent

Why the language and accent matter

A transcriber has to understand what's being said. That means the language, the regional accent and the vocabulary of the topic. A banking call and a hospital call use different words even when the language is the same.

Speech in India often mixes languages inside a single sentence. Whether that gets written in the original scripts, in one script or in Latin letters is a decision to make early, and our page on Indian language data goes into it.

How it works

From sample audio to reviewed transcripts

You'll have one named person the whole way through. A transcription job runs like this.

  1. Sample audio

    You send some sample audio and tell us what the transcripts are for.

  2. NDA first

    The NDA comes before any of your audio moves, and it's used only for the scope we agreed.

  3. Rules

    We settle verbatim or clean, speaker marks, tags, numbers and spelling.

  4. Free sample

    We transcribe a small sample free, so you can check it before you commit.

  5. Transcription

    Transcribers who know the language and the accent work in our Transcription tool.

  6. Review and delivery

    A multi-level review runs before anything is delivered.

Glossary

Transcription terms, explained

The words you'll run into when you plan a transcription project, and what each one means.

Verbatim transcription
Every word as it was said, with fillers, repeats, false starts and stutters kept in.
Clean transcription
The same speech with the fillers and false starts taken out, so it reads like writing. Also called non-verbatim.
Timestamp
A time code that ties a stretch of text to its place in the audio, per line, per segment or per word.
Speaker diarization
Working out who spoke when, and marking each turn with a speaker label.
Sound tags
Marks for sounds that aren't speech, such as [noise], [laughter] or [silence], written the same way every time.
Code-switching
Moving between languages inside one conversation, or inside one sentence. It's normal in a lot of everyday speech in India.
Transliteration
Writing a language in another script, like Hindi written in Latin letters. It isn't translation: the words stay the same.
Word error rate (WER)
The share of words a speech model gets wrong against a reference transcript, counting words swapped, dropped and added. A reference with its own mistakes makes the number meaningless.
Related work

Where the transcript comes from, and where it goes

One team can record the audio, transcribe it and take it further. You can also compare all eight services. Example category: healthcare conversation speech, transcribed and reviewed.

Data collection

Speech recorded by people who match your users, then transcribed here.

Conversational AI data

Call and dialogue audio for voice bots, IVR and support lines.

Data annotation and labeling

Intents, entities and sentiment added on top of the transcripts.

Translation and localization

Transcripts carried into the other languages your model has to handle.

Data and model evaluation

Your speech model's output checked against reviewed transcripts.

FAQ

Questions about transcription

Short answers about transcripts from us. The services FAQ covers the other services and how they fit together.

What is the difference between verbatim and clean transcription?

Verbatim keeps everything that was said, including fillers and false starts. Clean removes them so the text reads like writing. Verbatim usually suits speech recognition training, and clean suits tasks where meaning matters more than delivery.

Do you just run speech-to-text software?

Not on its own. Transcribers who know the language and the accent do the work in our own Transcription tool, and a multi-level review runs before delivery, so what you get isn't raw speech-to-text output.

Do you transcribe Indian languages?

Yes, and that goes well past Hindi and English. Transcribers who know the language and the accent do the work, so tell us which ones you need.

How do you transcribe speech that mixes languages?

We agree the rule with you first: the original scripts, one script, or Latin letters. Every transcriber then follows it, and the review pass checks it.

Can transcripts include timestamps and speaker labels?

Yes. We deliver timestamped, speaker-labeled transcripts for downstream training.

Where do the recordings come from?

From you, or from our data collection and conversational AI data services, so one team can handle both the recording and the transcript.

What do you need from us to start?

Some sample audio, the languages, what the transcripts are for and a rough volume in hours. If you already have transcription rules, send them. If you don't, we settle them with you before the work starts.

How long does a transcription project take?

It depends on the hours of audio, the languages, how clear the recordings are and how detailed the rules are, so there's no standard turnaround we can promise. The free sample is the quickest way to see the work, and the timeline gets agreed along with the full scope.

Can we try a short sample first?

Yes. Send a short brief with the languages, what the transcripts are for and roughly how much audio there is, and we'll transcribe a small sample free before you commit.

Is our audio kept private?

Yes. The NDA comes before any of your audio moves. We use it only for the scope we agreed, only the people working on your project can get to it, and it's returned or deleted when you ask.

Start with a free sample

Say what the transcripts should include, add the languages and roughly how much audio there is, and send it. We'll transcribe a small sample free before you commit.

  1. Your named contact replies within one business day.
  2. We sign an NDA before any audio changes hands.
  3. We transcribe your free sample, then agree the full scope.
What should the transcripts include?
Email this brief

This opens your email app with the brief filled in. Nothing is sent until you press send. You can also use the contact page.