Convert M4A to SPX

Fast, free M4A to SPX conversion — works in any browser

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    m4a
    M4A — MPEG-4 Audio File
    File extension.m4a
    File categoryaudio
    ProgramsApple iTunes VLC media player Windows Media Player foobar2000 Winamp
    Tech descriptionhttps://en.wikipedia.org/wiki/M4A
    MIME typeaudio/mp4 audio/x-m4a
    DeveloperApple Inc.
    M4A is an audio-only file container based on the MPEG-4 standard, introduced by Apple in 2004. The .m4a extension distinguishes audio-only files from .mp4 files that contain video. M4A files are most commonly encoded with the AAC codec, offering better audio quality than MP3 at the same file size. Lossless encoding using Apple Lossless (ALAC) is also possible within the M4A container. M4A is the default format for music purchased from the iTunes Store and Apple Music. It is natively supported on all Apple devices, and plays on Android, Windows, macOS, VLC, foobar2000, and Windows Media Player.
    spx
    An audio file with recorded voice messages
    File extension.spx
    File categoryaudio
    ProgramsVLC media player Audacity foobar2000 MPlayer
    Tech descriptionhttps://en.wikipedia.org/wiki/Speex
    MIME typeaudio/ogg; codecs=speex audio/x-speex
    DeveloperJean-Marc Valin (Xiph.Org)
    This format extension is one of the Speex Audio formats. It is an open-source codec developed by Xiph.Org. Used for creating voice messages and transmitting voice over packet-based networks with a low level of security. It is an audio file with recorded voice messages that are packaged in an OGG file. Only certain media players can open it.

    FAQ

    How to convert SPX to M4A?
    Upload your SPX file, select M4A as the output format, and click Convert. The converted file will be ready to download in seconds — no account or installation required.
    How long does it take to convert SPX to M4A?
    Most SPX files convert in seconds. Larger files may take up to a few minutes depending on size and internet speed. You can track the progress bar in real time during conversion.
    Is it safe to convert SPX files online?
    Yes. All uploaded SPX files and converted M4A results are automatically deleted from our servers within 1 hour after conversion. We do not store, share, or access your files.
    Can I convert SPX on iPhone or Android?
    Yes, our converter works on all devices and operating systems — iPhone, iPad, Android, Windows, and macOS. Open the site in your mobile browser, upload the SPX file and convert to M4A without installing any app.
    https://www.s102.online-audio-convert.com
    Drop files here