Speech data / VAD annotation

VAD training data.
Every boundary matters.

Turn raw audio into speech and non-speech annotations for voice activity detection training. We manage the labeling rules, boundary review, and quality assurance your project requires.

Scope your VAD annotation project

What we annotate

Clear labels for difficult audio.

Short utterances, quiet speech, pauses, and background noise make boundary decisions consequential. We turn your definitions of speech and non-speech into consistent annotation instructions.

01

Speech & non-speech intervals

Identify where speech is present and where it is absent. Apply the project rules consistently across short utterances, quiet speech, and pauses.

02

Onset & offset boundaries

Mark the start and end of speech and review timing against your boundary conventions and tolerances.

03

Ambiguous audio

Apply explicit rules for background noise, breaths, and sounds that are difficult to classify. Route uncertain decisions through quality review.

Execution & quality assurance

Complex workflows.
Accountable delivery.

Our VAD annotation work combines project-specific labeling instructions, trained annotators, managed production workflows, and quality review of timestamped annotations.

  1. 01

    Define the boundaries

    Agree the label definitions, treatment of pauses and breaths, timing conventions, and acceptance tolerances.

  2. 02

    Train & qualify

    Prepare annotators on the project rules and qualify them on the boundary decisions they will make.

  3. 03

    Annotate & review

    Manage interval labeling and boundary review, including quiet speech, short utterances, noise, and ambiguous sounds.

  4. 04

    Resolve & deliver

    Adjudicate disagreements, check annotation quality, and deliver timestamped labels in the required schema.

What you receive

Timestamped labels.
Built to your training specification.

We manage the annotation workflow so your team receives reviewed speech and non-speech labels with the timing and structure your pipeline requires.

Speech and non-speech labels
Intervals annotated to the agreed speech definitions and handling rules.
Reviewed start and end times
Onset and offset timestamps reviewed against your project-specific conventions and tolerances.
Customer-defined schema
Structured annotations tied to the source audio and delivered in your required format.

Start your annotation project

Define the speech.
We will manage the annotation.

Share your audio conditions, label definitions, boundary tolerances, and delivery requirements. We will help scope the annotation and quality assurance workflow.

Scope your VAD annotation project