Services/Transcription & Audio Annotation
Into23 Data+

Transcription & Audio Annotation

Production-grade speech data for voice AI, call analytics, and multilingual model training.

Into23 helps enterprises turn raw audio into structured training data that speech systems can trust. We cover transcription, timestamping, speaker separation, emotion and event labeling, and multilingual QA across the APAC language mix that generic audio vendors often struggle to support.

Starting from $2.50 per audio minute · Final scope depends on transcription method, speaker overlap, annotation layers, and QA depth.

Speech+
Structured outputs
Transcription, diarization, timestamps, and speech labels
APAC
Language focus
Strong fit for tonal, mixed, and dialect-rich audio
Human QA
Quality control
Review-led delivery for production speech datasets
Schema-fit
Delivery format
Outputs adapted to ASR, analytics, and training pipelines
Capabilities

What We Deliver

Multilingual Speech Transcription

Orthographic and clean-read transcription for customer calls, interviews, voice commands, and speech datasets across priority languages.

Speaker Diarization & Timing

We mark who spoke when, helping clients train and evaluate diarization, call analytics, and conversational AI workflows.

Emotion & Acoustic Labeling

Add labels for sentiment, emotion, non-speech events, and speech quality where the use case needs more than raw text.

Code-Switching & Dialect Handling

Our teams are equipped for tonal languages, mixed-language utterances, and dialect variation common across APAC datasets.

Human QA Layers

Review, sampling, and rubric-based QA keep output quality stable across large annotation programs and multiple vendor teams.

Prompted Speech Collection

We can support guided voice recording and speech-data collection for ASR, TTS, and model-training workflows where fresh audio is required.

Process

How It Works

01

Define the annotation schema

We align on audio types, label set, sampling method, target languages, and acceptance criteria.

02

Set up transcription and QA rules

Style guides, timing rules, diarization logic, and edge-case handling are calibrated before scale begins.

03

Run multilingual production

Native-speaking teams complete transcription and annotation with layered QA and issue tracking.

04

Deliver training-ready data

You receive clean outputs, QA notes, and recommendations for next-cycle expansion where needed.

Relevant Experience

Speech data operations for multilingual voice AI

Into23 supports multilingual audio programs that need more than verbatim transcription, including diarization, speech labeling, prompted speech collection, and QA designed around downstream model requirements.

Highlight: Transcription, diarization, and QA aligned to model-training needs
Explore case studies
FAQ

Common Questions

What kinds of audio can Into23 support?

Into23 supports customer calls, interviews, voice commands, prompted speech recordings, and any audio requiring transcription, diarization, emotion labeling, or speech quality annotation.

Why does multilingual audio annotation need native-speaking teams?

Tonal languages, code-switching, and dialect variation require annotators who understand the language as it is actually spoken. Generic teams miss nuances that affect downstream model quality.

Can Into23 handle audio annotation beyond plain transcription?

Yes. We support speaker diarization, timestamping, emotion and acoustic labeling, non-speech event marking, and prompted speech collection for ASR and TTS workflows.

Ready to Get Started?

Get a custom quote for your transcription & audio annotation project. Our team typically responds within 24 hours.