You want to know what the best codec for audio is for a certain purpose. That may be sound quality, compatibility, compression, or performance. You want to understand the various options available to make an informed choice based on your unique needs.

If that's so, this article is for you. Below, you'll find an overview of the six most-regarded audio codecs. You'll also discover a quick way to fix corruption on your favorite audio file. Read on!

In this article
    1. MP3 (MPEG-1 Audio Layer-3)
    2. AAC (Advanced Audio Coding)
    3. FLAC (Free Lossless Audio Codec)
    4. WMA (Windows Media Audio)
    5. ALAC (Apple Lossless Audio Codec)
    6. Opus

Part 1: What's an Audio Codec?

An audio codec is a tool (software or hardware) that compresses and decompresses digital audio data. When talking about audio codecs, the word "RAW" often comes into the picture. RAW means uncompressed audio files.

These files are recorded using methods that capture as much data as possible. Capturing an abundance of data ensures high-quality audio. However, that results in very large file sizes unsuitable for live streaming or distribution.

That's where codecs come in. They help make those enormous files small enough for easy handling. As mentioned, the first thing a codec will do is compress an audio file. Compressing involves removing extra data to minimize the file size while retaining as much quality as possible.

The other role a codec plays is decompressing. This is essentially playing back an audio file that has formerly been encoded. In simple words, it involves reversing the compression process.

There are two main categories of audio codecs based on the nature of compression: Lossless and lossy. The following table gives an overview of their difference in terms of these key features:

  • Compression,
  • Storage efficiency,
  • Audio quality,
  • File size,
  • Processing power,
  • Compatibility, and
  • Cost.
FeaturesLossy Audio CodecLossless Audio Codec
CompressionReduce file size by removing some dataReduce file size while preserving the original sound quality
Storage efficiencyMore efficientLess efficient
Audio qualityGood quality, though some loss at higher compressionHigher fidelity
File sizeSmaller file sizesLarger file sizes
Processing powerMay require more power to encodeLower processing needs
CompatibilityUniversal compatibilityModerate
CostMay have processing feesMost codecs are loyalty-free
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Part 2: 6 Best Codecs for Audio

There are many audio codecs available today. However, not all codecs are equally supported by streaming sites or audio devices. Some prioritize quality, while others emphasize compression.

So, below is an overview of the best sound codecs for streaming audio. Review them and find out which one meets your needs.

MP3 (MPEG-1 Audio Layer-3)

mp3 audio codec
SpecificationsDetails
Release Date1987 by the Fraunhofer Society
Device Support One of the most widely used audio codecs
Compression typeLossy
DRM supportNot
Recommended bitrate32-320 kbps
Sampling rateUp to 48K Hz
File formats supportedMP3
Royalties/PatentsExpired

MP3 is the most popular codecs for streaming audio. It's a lossy-type codec compatible with an extensive range of devices and software, which is one reason for its widespread popularity. Another reason is its small file size, which makes it easier to store and share over the Internet.

Pros
  • Supported on a wide range of devices and software
  • Best for broadcasts on social platforms like LinkedIn Live, YouTube Live, etc.
  • Smaller file sizes make it ideal for sharing and downloading over the internet
Cons
  • Lower audio quality compared to newer like Opus and AAC

AAC (Advanced Audio Coding)

aac audio codec
SpecificationsDetails
Release Date1997
Device Support Many devices support it
Compression typeLossy
DRM supportYes
Recommended bitrate64-320 kbps
Sampling rateUp to 96K
File formats supportedMP4, M4A, and 3GP
Royalties/PatentsYes

If you're looking for the best BT audio codec, this is it. AAC succeeded MP3. It's the default codec for iOS devices (though it's not Apple's). Despite being a lossy codec, AAC provides better sound quality than MP3. It's supported by iOS and Android devices (running Android 8 or newer).

So, what makes it popular is the high-quality sound, efficient compression, and wide compatibility. Its smaller size makes it easier to store and share over the internet. Most importantly, ACC makes it a suitable choice for streaming and downloading music. In fact, it's the default codec for streaming services like Spotify and YouTube.

Pros
  • Better audio quality than MP3 at the same audio bitrate for streaming
  • Efficient compression that balances file size and quality
  • Supported by many devices and software platforms
Cons
  • It's a closed-source format, which limits accessibility for developers

FLAC (Free Lossless Audio Codec)

flac audio codec
SpecificationsDetails
Release DateWas first released in 2001
Device Support Almost all devices support it
Compression typeLossless
DRM supportNo
Recommended bitrateVariable
Sampling rateUp to 655,350 Hz
File formats supportedFLAC
Royalties/PatentsNone

Being open-source is among the reasons for FLAC's popularity. FLAC stands for Free Lossless Audio Codec, a lossless codec. It's highly regarded for its compression ratios, which result in smaller file sizes without sacrificing the original sound quality.

In other words, FLAC doesn't lose any audio data during compression, and the resultant file sounds the same as the source. FLAC files are popular among music producers and audiophiles. This codec is also supported on many audio devices and software.

Pros
  • Free and open-source; anyone can use it without any restrictions
  • Though it's lossless, FLAC provides significant file size reduction. That makes it easier to store and manage large audio files.
  • It doesn't lose sound fidelity, unlike lossy formats like AAC or MP3.
  • FLAC is widely supported on many devices and software players, making it ideal for audiophile and professional audio communities.
Cons
  • FLAC has larger file sizes than lossy codecs like MP3
  • Decoding this codec can be more power-demanding than decoding lossy codecs
  • Not one of the best options for streaming over the internet due to larger file sizes

WMA (Windows Media Audio)

wma audio codec
SpecificationsDetails
Release DateAugust 17, 1999
Device Support Best compatible with Windows devices
Compression typeLossy
DRM supportYes
Recommended bitrate64-320 kbps
Sampling rateUp to 48K Hz
File formats supportedWMA, ASF
Royalties/PatentsYes

WMA is a lossy audio codec created by Microsoft. It's typically for the Windows ecosystem and provides a decent compression efficiency, ensuring high-quality audio at lower bitrates. The encoding speed is moderate.

WMA also includes a lossless variant that lets users compress audio without sacrificing any quality detail. This codec is ideal for online streaming and easy storage of music files on Windows.

Pros
  • Decent compression efficiency
  • Excellent sound quality at low bitrates
  • A lossless variant that allows compression without losing sound quality
  • Wide integration into the Windows ecosystem and other Microsoft devices, such as Xbox
  • It supports Digital Rights Management, essential for protecting content from unauthorized distribution
Cons
  • Limited compatibility compared to codecs like MP3 and AAC
  • WMA is a proprietary codec, making it challenging to use outside the Microsoft environment

ALAC (Apple Lossless Audio Codec)

alac audio codec
SpecificationsDetails
Release DateReleased in 2004
Device Support Best compatible with Apple devices
Compression typeLossless
DRM supportNo
Recommended bitrateVariable
Sampling rateUp to 384,000 Hz
File formats supportedM4A
Royalties/PatentsNone

As the name suggests, Apple Lossless Audio Codec (ALAC) is a lossless sound codec. Like FLAC, ALAC compresses audio files without losing the original data. That allows for high-quality sound in a smaller file size.

This codec can support bit depths of up to 24 bits with sample rates as high as 192kHz. That makes it best for high-resolution audio. Despite its top-quality sound, ALAC hasn't gained significant popularity outside the Apple ecosystem. However, it remains an excellent choice for quality audio playback and storage for those using Apple devices.

Pros
  • Lossless compression reduces file size while retaining the original audio quality
  • Supported by iTunes, Macs, iPhones, and other Apple devices
  • It supports rich metadata tagging, e.g., album artwork, track titles, etc.
  • It's open source
Cons
  • Larger file sizes than lossy codecs
  • Not ideal for streaming
  • Limited support outside the Apple environment
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6. Opus

opus audio codec
SpecificationsDetails
Release DateReleased in 2012
Device Support Extensive compatibility across different operating systems, devices, and software apps
Compression typeLossy
DRM supportNo
Recommended bitrateVariable
Sampling rateUp to 48K Hz
File formats supportedOPUS
Royalties/PatentsNo

Opus is one of the best audio codecs for Android, iOS, and other systems on this list. It's a lossy compression-type codec with fast encoding speed. It offers high-quality sound and, at the same time, significantly reduces file sizes.

Opus is commonly used for broadcasting and streaming. It's also preferred for storing music thanks to its efficient compression algorithms. Users love it for its ability to support various bibrates.

Although Opus is still not a wide use yet, many consider it a next-generation codec. It also has the added benefit of being open-source and royalty-free. Both Android and iOS now natively support Opus playback.

Pros
  • Offers high-quality sound with significantly reduced file size
  • Next-generation codec that is open-source and royalty-free
  • Potential for wide adoption
Cons
  • Limited adoption currently, though that's expected to change in the near future

Part 3: How to Fix Corruption on Your Best Sound Codec?

Suppose you've selected your best codec for audio from the above list. In that case, your next step will probably be to encode the audio content into the chosen codec format. After that, you can test the audio output to ensure it meets your quality and file size expectations. If you're working on a software project, you'll also need to integrate the codec into your platform.

Once everything is all set, you can distribute the audio files. However, your files can get corrupted during one of the mentioned processes. When that happens, software like Repairit Audio Repair can help you restore the files.

It doesn't matter what issues your audio files have—humming, rumbling, or clipping—or what format the files are in: MP3, AAC, WAV, or FLAC. Repairit handles everything with ease. Most importantly, it repairs corrupted audio files with a very high success rate!

Install Repairit on your Windows PC, then follow these three simple steps to fix your files:

Step 1: Open Repairit and choose the More Types Repair mode from the sidebar. Then, click Audio Repair and add the corrupted audio files.

select the more types repair option then go to audio repair to add your corrupt files

Step 2: Hit the Repair button to begin the audio repair process.

click the repair button to start the repair process

Step 3: Once the audio files have been repaired, preview them. You can then save the files to your desired location.

preview your repaired audio files then save them
Fix Corruption on Your Best Sound Codec

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Conclusion

You now know how to choose a suitable codec for your needs. We've reviewed six of the top-rated audio codecs on the market. All of them are great!

However, there are a few critical differences depending on whether a codec is lossy or lossless. The differences are mainly in terms of overall audio quality, file size, and compatibility. Your best codec for audio depends on your specific needs, so we'll leave you to choose independently!

FAQ

  • What are other popular codecs for audio?
    MPEG-4 Audio, shortened as M4A, is another popular audio codec for Apple. It's typically used for storing podcasts, audiobooks, and other types of audio content. M4A saves audio data in an MPEG-4 file and encodes it with ALAC or AAC formats.
  • How can I convert M4A to MP3?
    You can quickly convert M4A to MP3 using the Apple Music app. In the Apple Music's menu bar, navigate to Music > Settings. Hit the Files button and then select Import Settings. Lastly, select MP3 Encoder from “Import Using” and click OK.
  • Is MP3 or AAC audio codec better?
    Both MP3 and ACC are widespread audio codecs and for good reasons. However, ACC generally offers better quality audio at lower bitrates than MP3. So, if you're more into sound quality, AAC is the codec you want to choose. But for everyday listening, MP3 will still do.
Louie Morgan
Louie Morgan Apr 14, 25
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Louie Morgan
Written by Louie Morgan
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