raw-audio to M4A Converter

Convert raw-audio to M4A online, for free.



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Auto
Sets how the audio is encoded. "Auto" suits most conversions. "Copy" reuses the audio as-is, so it is fast and keeps full quality, but only when the output format supports it.
100% represents the original volume. To double the volume, increase it to 200%. To reduce volume by half, select 50%
Fades the audio in at the start of the output.
Fades the audio out at the end of the output.
Enable if you want to reverse audio stream
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How to Convert raw-audio to M4A?

  1. Click the “Choose Files” button to select your raw-audio files.
  2. Click the “Convert to M4A” button to start the conversion.
  3. When the status change to “Done” click the “Download M4A” button

Easy to Use

Simply upload your raw-audio files and click the convert button. You can also batch convert raw-audio to M4A format.

Best Quality

We use both open source and custom software to make sure our conversions are of the highest quality. In most cases, you can fine-tune conversion parameters using “Advanced Settings” (optional, look for the icon).

Free & Secure

Our raw-audio to M4A Converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically deleted after 8 hours.


Raw-audio is a headerless PCM sound file: nothing but the digital samples themselves, with no metadata, no compression, and no marker identifying where the audio begins. A WAV file is essentially the same data with a short descriptive header attached. Raw-audio appears most often as the output of audio hardware, DSP pipelines, and telephony systems, and as the intermediate stage between processing steps.

 

How to open a raw-audio file?

Import it into Audacity using File → Import → Raw Data. You will be asked for the encoding, byte order, channel count, and sample rate, since the file itself does not record them.

 

Common defaults are 16-bit signed PCM at 44,100 Hz or 48,000 Hz; telephony recordings are frequently 8-bit at 8,000 Hz. FFmpeg and SoX can play and convert raw-audio from the command line once you supply the same parameters. Save the result as WAV or MP3 so the settings travel with the file from then on. You can also convert the file with our RAW to MP3 tool.

 

Developed by: No single vendor — a generic PCM stream

Initial Release: N/A


MPEG 4 Audio (M4A) compresses and encodes audio files by using one of two coder-decoder algorithms: Advanced Audio Coding (AAC) or Apple Lossless Audio Codec (ALAC). M4A files are smaller in size while simultaneously better in quality than MP3 files, with which it shares the most similarities, in comparison to all other audio file formats.

 

How to open an M4A file?

M4A files open in most well-known, audio-playback programs, including iTunes, QuickTime, and Windows Media Player. For Apple users, iTunes is the default program to open M4A files. For Windows users, the default program is Windows Media Player. Users can also preview M4A files by highlighting the file and pressing the spacebar.

 

Additionally, M4A opens in VLC media player, Adobe Premiere Pro, Elmedia Player, Winamp, and a host of other programs.

 

Developed by: ISO/IEC, Moving Pictures Experts Group

Initial Release: 2001

Useful links:

https://en.wikipedia.org/wiki/MPEG-4_Part_14

https://www.loc.gov/preservation/digital/formats/fdd/fdd000037.shtml


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