Physical audio data for speech and voice models

Master 4 physical signals: voices, rooms, overlap, and noise.

World Audio designs and runs consented, capture-authentic audio programs for ASR, speaker diarization, TTS, and speech-to-speech systems—built around the conditions where your model fails.

Founding design-partner program · working company concept

Illustrative capturenatural_dialogue_0042
clock
48 kHz
room
RT60 0.42 s
overlap
active
00:18.420

A So we ship on Thurs—B Thursday, yes.

speaker metadata
Who is speaking—and how?

Recruit by language, accent, age band, vocal range, speaking style, and domain expertise. Consent and usage rights travel with every recording.

01
Failure-firstDesign the data around a model gap.
Rights at sourceConsent and provenance begin at capture.
Schema-nativeDeliver into the pipeline you already use.
Customer-ownedCommissioned data belongs to you by default.

The data gap

Clean speech is a controlled slice of a physical world.

Voice systems leave the benchmark and meet microphones, rooms, people, devices, latency, and competing sound. That is where transcript accuracy bends, speaker identity collapses, and synthetic voices stop feeling responsive.

The next model gain may not need more audio. It may need the right physical audio.

What we collect for

One capture platform. Four model families.

Each program changes with the target behavior. Recruitment, acoustic design, interaction shape, annotation, and acceptance criteria follow the model—not a generic collection template.

A
ASR

Automatic speech recognition

Hear the words that clean benchmarks miss.

Scripted and spontaneous speech across accents, devices, distances, noise bands, code-switching, domain vocabulary, and long-form sessions.

  • word alignment
  • disfluency
  • language ID
  • SNR
B
Who spoke

Diarization & separation

Keep speaker identity intact when conversation gets messy.

Natural multi-speaker exchanges with interruption, overlap, backchannels, speaker movement, channel-separated references, and adjudicated turns.

  • speaker turns
  • overlap
  • channel refs
  • VAD
C
TTS

Text-to-speech

Build voices with range, control, and defensible rights.

Consented studio and in-context speech spanning prosody, emotion, pace, pronunciation, vocal effort, expressive reads, and directed variation.

  • prosody
  • phonemes
  • emotion
  • consent
D
S2S

Speech-to-speech systems

Train the rhythm of interaction—not just isolated turns.

Full-duplex conversations with latency, repair, interruption, role, intent, turn-taking, and paired audio–text artifacts for conversational models.

  • turn timing
  • intent
  • repair
  • latency

The physical signal chain

From one model failure to an accepted dataset.

Every step preserves the link between who spoke, what happened in the room, how the audio was recorded, how it was labeled, and what the customer is allowed to do with it.

Bring us a failure case
  1. 01
    DefineStart from a model failure.

    Bring a weak accent cohort, a diarization break, an unnatural voice behavior, or a target environment your current corpus does not cover.

  2. 02
    DesignTurn the gap into a capture spec.

    We define speakers, settings, hardware, prompts, interaction shape, metadata, rights, acceptance tests, and the delivery schema.

  3. 03
    CaptureInstrument the physical conditions.

    Facilitated sessions preserve device, room, channel, timing, noise, and participant provenance at the source.

  4. 04
    AdjudicateReject weak evidence early.

    Audio and annotations pass automated checks, human review, language QA, and targeted re-runs before they enter the accepted set.

  5. 05
    DeliverShip into your training pipeline.

    Receive versioned audio, manifests, alignments, speaker and condition metadata, consent records, and a documented acceptance report.

What a deliverable looks like

Audio your pipeline can explain.

A dataset is not a folder of WAV files. It is audio plus the evidence needed to reproduce selection, filter failure, evaluate coverage, and defend the rights chain.

Illustrative pilot structure · not a completed World Audio dataset

WA / PILOT SHAPEmulti_party_support_v0.1
ILLUSTRATIVE
speakers
24
rooms
03
devices
06
target overlap
8–14%
artifactshapepurpose
audio/FLAC · 48 kHz · 24-bitraw + accepted channels
segments.jsonlword + turn alignedASR / diarization targets
conditions.parquetroom · device · SNRcoverage and slicing
participants/redacted identitiesconsent and usage scope
data_card.mdversioned reportlimits, QC, known gaps
checksummedversionedprovenance-linkedschema-conformant

Where the signal happens

Capture conditions, not just voices.

01

Natural conversation

Paired and group dialogue with interruption, repair, backchannels, emotion, role, and real turn timing.

diarization · S2S
02

Devices and channels

Phones, headsets, far-field arrays, embedded microphones, codecs, echo paths, and network degradation.

ASR · telephony
03

Acoustic environments

Homes, offices, vehicles, public spaces, industrial settings, controlled rooms, and measured noise playback.

robustness · evaluation
04

Directed voice performance

Prosody, phonetic coverage, emotion, pace, effort, pronunciation, and repeatable controlled variation.

TTS · voice control

Rights are part of the data

Consent cannot be reconstructed after capture.

Recruitment, identity checks, intended model use, voice rights, recording conditions, compensation, retention, and withdrawal rules are designed before the first session.

participantverified at source
usage scopebound to consent
sessioncapture-linked
artifactlineage preserved
deliveryrights manifest included

Before a pilot

Questions the spec should answer early.

The first offer is a custom pilot built around a model gap. Reusable dataset modules can follow once rights, demand, and quality thresholds are proven.

Start with one gap

Bring the audio your model still gets wrong.

Describe the target behavior, speakers, and physical conditions. We will turn it into a pilot-shaped collection brief.

Useful starting evidence
  • a weak evaluation slice
  • sample failure audio
  • target language and setting
  • delivery constraints

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