Project note / Amazon / 2026
600+ code-switching interviews.
A multilingual speech collection involving 1,200 participants, one-hour sessions and eight languages.
At a glance
The project file.
The value of this case study is its exact scope, not a vague claim of global scale.
- Year
- 2026
- Format
- Code-switching speech interviews
- Interview volume
- 600+ one-hour interviews
- Participants
- 1,200 participants
- Languages
- Eight languages
- BBI remit
- Recruitment, Scheduling, Recording and Delivery
- Supplied inputs
- Interview scripts and translations were supplied to BBI for the project.
Operation
Four responsibilities, one production line.
BBI handled the operational work from finding participants to handing over the recordings.
- RecruitmentCoordinate 1,200 participants against the project’s multilingual requirements.
- SchedulingArrange more than 600 one-hour interview sessions across the participant pool.
- RecordingProduce the code-switching interviews using the scripts and translations supplied for the project.
- DeliveryComplete and hand over the recorded project output.
BBI did not create or translate the interview scripts. Keeping that boundary visible is part of reporting the project accurately.
What the evidence shows
Scale in long-form speech.
This was not a set of short isolated prompts.
More than 600 interviews ran for one hour each. The operational challenge therefore included sustained sessions, a large participant pool and an eight-language code-switching format.
The project demonstrates BBI’s ability to coordinate multilingual participant recruitment, scheduling and recording at a meaningful production scale. It does not imply that the resulting dataset is publicly available or licensed for resale.
Questions
Reading the figures correctly.
Were there 600 participants?
No. The project involved 1,200 participants and more than 600 interviews. Those are separate figures.
Did BBI write and translate the scripts?
No. Scripts and translations were supplied for the project. BBI handled recruitment, scheduling, recording and delivery.
Did every interview last one hour?
The approved project description is more than 600 one-hour interviews. BBI does not add unsupported detail beyond that statement.
Can the dataset be downloaded?
No public dataset or resale licence is offered on this page. The case study documents BBI’s production work and invites buyers to discuss a new custom collection.