FLAC（Free Lossless Audio Codec）
FLAC 是一种开源无损音频编解码器，可将音频压缩到原始大小的 50-70%，且不丢失任何一个比特的质量。它是发烧友、音乐归档和任何需要保留完整音频保真度的首选格式。
MIME 类型
audio/flac
类型
二进制
压缩
无损
优点
- + Bit-perfect lossless compression — no quality loss whatsoever
- + 50-70% compression ratio saves significant storage
- + Open source with universal player support
- + Rich metadata via Vorbis Comments and embedded album art
缺点
- − Files are 2-3x larger than lossy MP3 at equivalent listening quality
- − Not supported by some older devices and car stereos
- − Streaming bandwidth requirements are higher than lossy codecs
何时使用 .FLAC
将 FLAC 用于归档音乐收藏、分发高保真音频，以及任何需要在减小文件大小的同时保持无损质量的场景。
技术细节
FLAC 使用线性预测、残差编码和 Rice/Golomb 熵编码来无损压缩音频。它支持最高 32 位深度、655 kHz 采样率和 8 声道。查找表通过流中的搜索表实现。
历史
Josh Coalson 于 2001 年发布了 FLAC 作为专有无损编解码器的免费开源替代方案。Xiph.Org 基金会现在负责维护它。FLAC 支持已成为 Android、iOS 和大多数音乐播放器的标准。
从 .FLAC 转换
转换为 .FLAC
相关格式
相关术语
Learn More
Audio Format Guide: MP3 vs AAC vs FLAC vs WAV
Audio formats balance file size against sound quality. This comparison covers the most common formats and helps you choose the …
How to Trim and Edit Audio Files in the Browser
Browser-based audio editing lets you trim silence, cut sections, and adjust audio without installing software. Learn how to use the …
Best Practices for Podcast Audio Quality
Clear, consistent audio is the foundation of a professional podcast. This guide covers recording levels, noise reduction, loudness normalization, and …
How to Convert Between Audio Formats
Converting audio files between formats is common when preparing music for different devices, uploading to platforms, or archiving recordings. Learn …
Troubleshooting Audio Playback Issues
Audio files that refuse to play, produce distorted sound, or have sync issues are common frustrations. This guide helps you …
Audio Loudness Standards: LUFS, dBFS, and Normalization
Different platforms have different loudness requirements. Understanding LUFS, dBFS, and normalization ensures your audio plays at the right volume on …