*** description: >- Essential concepts for audio data curation including ASR inference, quality assessment, and speech processing workflows categories: * concepts-architecture tags: * concepts * audio-curation * asr * speech-processing * quality-metrics personas: * data-scientist-focused * mle-focused difficulty: beginner content\_type: concept modality: audio-only *** # Audio Curation Concepts This guide covers the essential concepts for audio data curation in NVIDIA NeMo Curator. These concepts assume basic familiarity with speech processing and machine learning principles. ## Core Concept Areas Audio curation in NVIDIA NeMo Curator focuses on these key areas: Modality-level overview of ingest, validation, optional ASR, metrics, filtering, and export overview map Understanding the AudioBatch data structure and audio file management data-structures validation Comprehensive overview of the automatic speech recognition pipeline and workflow overview architecture Core concepts for evaluating speech transcription quality and audio characteristics wer cer metrics Concepts for constructing manifests and ingesting audio datasets manifests ingest Concepts for integrating audio processing with text curation workflows multimodal integration ## Infrastructure Components The audio curation concepts build on NVIDIA NeMo Curator's core infrastructure components, which are shared across all modalities. These components include: Optimize memory usage when processing large audio datasets partitioning batching monitoring Leverage NVIDIA GPUs for faster ASR inference and audio processing cuda nemo-toolkit performance Continue interrupted operations across large audio datasets checkpoints recovery batching