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AAC to SPH Converter

Convert your aac files to sph (nist sphere audio file) online & free

Drag & Drop or Choose a file

Chose AAC file
To
Drop file here. 150 MB maximum file size.

No sign-up required. Your files are deleted automatically after 24 hours.


Convert to SPH   

What did you think of your recent AAC conversion? 4.9 (276 Votes)

Convert Other AAC File

How to Convert PDF to DOCX

  1. Click the "Choose AAC File" button and select your AAC.
  2. Click โ€œConvert to SPHโ€.
  3. Wait a few seconds while we convert your file.
  4. Download the resulting SPH file instantly.

What is AAC?

A compressed audio file similar to a .MP3 file, but offering several performance improvements; for example, higher encoding efficiency for transient and stationary signals, a simpler filter bank, and better frequency management at-above 16 kHz; maintains a quality that is almost identical to the original audio source.


Read everything about AAC file type.

What is SPH?

An SPH file is an audio file created in the NIST SPHERE format, which is often used in searching speech recognition. Usually contains the apos; recording of apos; a person who speaks. The SPH files can be provided as voice-recognition system entries.


Read everything about SPH file type.

More Free Online AAC Tools

We have 100% free online AAC tools that does not required any registrations and installations on your system, here are few popular free AAC tools to View, Convert, Edit, Merge, Split, Compare and manage file metadata online from any device with a modern browser like Chrome, Opera and Firefox.

Frequently Asked Questions

โ“ How can I convert AAC to SPH?

Chose or drag & drop your AAC file, click Convert to SPH, and download the SPH file. No registration needed.

๐Ÿ” Are my files secure?

Yes, all uploads are encrypted. Your files are auto-deleted after 24 hours.

๐Ÿ“ Will my formatting be preserved?

Yes, our converter retains layout, fonts, and images as accurately as possible.

โฑ๏ธ How long does it take to convert AAC to SPH?

Fileproinfo converter engine works fast. You can convert AAC to SPH in a few seconds to couple of minutes for large size files with complex structure.

Convert from AAC

FileProInfo support manay file formats that allow you to convert AAC to 100s of file formats, without any limit, registration and downloading, 100% free and online AAC converter.

100% Free aac file converter online tools. Other recommended free online aac to sph file converter

All converters in this list are manually verified & 100% free and working properly, however you must use these apps according to their respective terms & conditions.

# Tools License Developer
1 AAC to SPH converter Free JeDok.com
1 AAC to SPH converter Free Docpose.com
Browse all file extensions Browse all software programs Browse free online tools

This tool and page updated at: 12-Apr-2025

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