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:

Audio Curation Pipeline

Modality-level overview of ingest, validation, optional ASR, metrics, filtering, and export

AudioBatch Structure

Understanding the AudioBatch data structure and audio file management

ASR Pipeline

Comprehensive overview of the automatic speech recognition pipeline and workflow

Quality Metrics

Core concepts for evaluating speech transcription quality and audio characteristics

Dataset Manifests and Ingest

Concepts for constructing manifests and ingesting audio datasets

Text Integration

Concepts for integrating audio processing with text curation workflows

Infrastructure Components

The audio curation concepts build on NVIDIA NeMo Curator’s core infrastructure components, which are shared across all modalities. These components include:

Memory Management

Optimize memory usage when processing large audio datasets

GPU Acceleration

Leverage NVIDIA GPUs for faster ASR inference and audio processing

Resumable Processing

Continue interrupted operations across large audio datasets