Professionally recorded speech data
Every corpus is captured in a professional recording facility, in acoustically treated environments, by experienced sound engineers, using a controlled and documented recording chain.
AI Speech Data
AUDIO DATA
AI speech data production in France and Europe
★★★★★ 70+ five-star reviews on Google · 15+ years of audio production experience · Paris, France
They have trusted us with their projects
Professional recording, native-speaker recruitment, participant coordination and delivery of datasets structured for integration into your ASR, TTS and conversational AI pipelines.
Based in Paris, we run multilingual projects from casting through to final delivery.
Project volume
From small qualification pilots to productions involving dozens of speakers and hundreds of finished hours, we scale the production setup around the project requirements.
Already have a technical specification?
We adapt the production setup to your pipeline instead of imposing ours. Format, structure and quality thresholds are set from your document, not from a house standard.
- 48 kHz / 24-bit standard
- 44.1 to 192 kHz and 16 to 32-bit on specification
- Mono or stereo
- Isolated channels
- Room tone
- Post-processing according to specification
- Naming convention
- Metadata schema
- Custom QC thresholds
- Delivery structure
01Capabilities
What we produce, and what we handle around it.
We take on the recording and the whole operational chain required to deliver a dataset that matches your specification.
Speech data collection
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ASR data collection
Read, prompted and spontaneous speech for automatic speech recognition training.
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TTS voice recording
Consistent single-speaker sessions, controlled level and distance, for synthetic voice building.
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Conversational speech
Two-speaker exchanges captured for conversational AI and dialogue modelling.
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Natural dialogue recording
Scripted, semi-scripted or free dialogue, depending on your specification.
Recording configurations
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Dual-speaker recording
Two speakers, two acoustically separate spaces, one synchronized session.
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Isolated-channel recording
Each speaker on their own channel, deliverable separately or mixed.
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Clean, unprocessed capture
No EQ, no compression, no noise reduction, no effects in the AI recording chain.
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Room tone and reference files
Background captures and reference material when your pipeline requires them.
Speakers and casting
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Native speaker recruitment
Sourcing native speakers in Paris according to your project brief.
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Voice casting
Auditions, sample selection and validation before the recording days are booked.
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Regional accents and dialects
Casting criteria defined with you, then searched for specifically.
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Multilingual speech collection
European and international languages, subject to recruitment for each project.
Production management
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Audio quality control
Listening pass on delivered material: level, noise, clipping, mouth noise, script compliance.
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Participant coordination
Scheduling, briefing, reminders and on-site handling of every speaker.
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Consent and release management
Collection and tracking of participant documents, following the contractual framework and the forms approved for the project.
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Dataset delivery
Naming convention, folder structure and manifest built to your specification.
02End-to-end production
We can manage the complete local execution of a speech data project, including speaker sourcing, auditions, scheduling, recording, participant coordination, audio QC, re-records and final dataset delivery.
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Project specification
We go through your technical spec: languages, speaker profiles, hours, format, naming, delivery.
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Speaker sourcing
Recruitment against the agreed criteria, in Paris and the surrounding region.
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Auditions and casting
Samples recorded and submitted for validation before anything is booked.
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Scheduling
Recording days planned around speaker availability and your deadline.
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Professional recording
Directed sessions in a treated room, clean capture chain, engineer present throughout.
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Audio quality control
Every file checked against the spec before it leaves the studio.
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Re-record management
Identifying, scheduling and re-recording the items that need another take, following the agreed validation process.
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Dataset preparation
Naming, structuring, metadata and participant documents assembled.
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Final delivery
Structured dataset delivered through the channel you specify.
03Recording environment
Professional acoustic environments.
Two professional capture spaces with absorption and diffusion treatment, built for clean and repeatable voice recording.
Acoustic treatment designed for controlled voice capture.
Glass wool sits behind the finished surfaces in both recording environments. Booth 1 carries reinforced treatment, with additional acoustic insulation behind the black curtain. t.akustik absorption and diffusion products are installed throughout every space. The point is not the product list: it is that reflections and background noise stay low, and that a take sounds the same from one session to the next, which is what a dataset needs.
04Conversational recording
Dual-Speaker Conversational Recording
Designed for conversational AI, ASR and natural dialogue datasets.
Two separate spaces to minimise crosstalk
For projects that require independent tracks, speakers can be recorded in two acoustically separate spaces, synchronized. This configuration maximises isolation between voices and allows delivery of the individual channels as well as a combined mix, according to your specification.
05Recruitment
Native Speaker Recruitment in Paris
Our Paris location gives us access to an international talent pool. Depending on project requirements, we can recruit native speakers across a wide range of European and international languages.
Languages we recruit for
- French
- German
- Italian
- Spanish
- Portuguese
- English
- Arabic
And other languages depending on the project.
Casting criteria we can work to
- Gender diversity
- Age groups
- Regional accents
- Dialects
- Voice characteristics
- Professional voice actors
- Non-actor native speakers
Each recruitment is run specifically against the linguistic, demographic and vocal criteria of the project.
06French speech data
French Speech Data Collection
LEMG Studio provides local execution for French speech data projects from our professional facility in Paris. Being on the ground means casting, re-records and schedule changes are handled locally, without a remote coordination layer.
- Standard and Parisian French
- Regional French accents
- Urban and informal speech
- Professional voice talent
- Non-actor conversational speakers
- Demographic diversity
- Custom casting requirements
07For AI companies and data vendors
A European Production Partner for AI Teams
We work with AI companies, data vendors, technology providers and international production partners requiring professional speech-data execution in France and Europe.
Whether you need a local recording facility, speaker recruitment, a complete French production operation or support for a multilingual project, LEMG Studio can build a production workflow around your specification.
Direct vendor or local execution partner
LEMG Studio can operate either as a direct speech-data production vendor, or as a local execution partner for international data companies requiring production capabilities in France.
08Why LEMG Studio
What you actually get by working with us.
A professional Paris facility
A real, acoustically treated recording environment, in Paris, that you are welcome to visit.
Native-speaker sourcing
Direct access to the international talent pool of Paris, to source varied linguistic and cultural profiles as the project requires.
Technical audio expertise
Every session is run by an experienced sound engineer, present throughout. The technical team is scaled up as the project requires.
Flexible production workflows
Naming, structure, formats and QC criteria built around your specification.
One accountable point of contact
A single project lead remains accountable from the initial brief through to final delivery, coordinating the technical and production resources required at each stage.