Gustav Aggeboe
Writer

Gustav Aggeboe

Platform architecture and the engineering behind speech data.

Gustav leads the platform architecture behind Spirelight. He builds the systems used to manage recording, transcription, QA, metadata, contributor workflows, and dataset delivery. He writes about the engineering behind speech data: pipelines, data quality, evaluation, and the practical details of turning raw audio into training-ready datasets.

📍 Copenhagen, DenmarkWebsite

Posts by Gustav Aggeboe

For Developers

Word error rate: what WER really measures, and how to cut it

Word error rate is the default ASR accuracy metric, but the number means nothing without context. How WER is calculated, what counts as good, and what really moves it.

June 9, 2026