AMRNB to SPX Converter

Easily convert your AMRNB files to SPX format in the Audio category with ConvertOnline's efficient tool.

File Limit Exceeded!

Oops! You've used up your 500MB daily limit for free conversions.
Want more? Upgrade now for unlimited access or come back tomorrow!

Download All
Convert all to
Drag and drop files here. Sign Up for more features.
+

What is AMRNB ?

AMR-NB (Adaptive Multi-Rate Narrowband) is an audio compression format used primarily for voice data. It enables efficient transmission of speech over mobile networks, optimizing bandwidth while maintaining sound quality.

Read more...

What is SPX ?

SPX is a file format used primarily for storing audio data, particularly in the context of compressed audio streams. It is often associated with the Speex codec, which is designed for efficient voice data compression.

Read more...

How to Convert AMRNB to SPX in Just a Few Steps

  1. Upload your AMRNB file
    Click the upload button or drag & drop your file into the converter area. We support all major formats.
  2. Choose SPX as the output format
    The tool will automatically convert your file to SPX.
  3. Start the conversion
    Click the "Convert" button and let our tool handle everything. The conversion only takes a few seconds.
  4. Download your converted file
    Once complete, download your new SPX file instantly.

Start converting AMRNB to SPX now — it’s fast, safe, and completely online!