What is MIME type "audio/vnd.nuera.ecelp9600"?

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

audio/vnd.nuera.ecelp9600 is a MIME type for audio files that use a proprietary codec. It is based on CELP technology, which compresses voice data efficiently while keeping speech clear.

This format is optimized for voice transmissions. It reduces file size and maintains intelligibility in low-band-rate communications.

Primary use: Voice compression in telecommunication systems and specialized communication devices.
Additional use: Voice messaging and embedded speech applications where bandwidth is limited.
Technical detail: Implements Nuera Corporation's advanced audio algorithms.

Files using this MIME type are often associated with the ECELP9600 extension.

For more detailed technical information, you can visit the IANA Media Types registry.

Associated file extensions

.ecelp9600

Usage Examples

HTTP Header

When serving content with this MIME type, set the Content-Type header:


    Content-Type: audio/vnd.nuera.ecelp9600

HTML

In HTML, you can specify the MIME type in various elements:


    <a href="file.dat" type="audio/vnd.nuera.ecelp9600">Download file</a>

Server-side (Node.js)

Setting the Content-Type header in Node.js:


    const http = require('http');    
    
    http.createServer((req, res) => {    
      res.setHeader('Content-Type', 'audio/vnd.nuera.ecelp9600');    
      res.end('Content here');    
    }).listen(3000);

Associated file extensions

.ecelp9600

FAQs

What is the primary purpose of the audio/vnd.nuera.ecelp9600 MIME type?

This MIME type is used for audio files compressed with the Enhanced CELP (Code-Excited Linear Prediction) algorithm developed by Nuera. It is specifically designed for low-bandwidth voice transmission in telecommunication systems rather than high-fidelity music playback.

How do I open an .ecelp9600 file on my computer?

Standard media players like Windows Media Player or VLC usually do not support this proprietary format natively. You typically need specialized software provided by the hardware manufacturer (Nuera) or a dedicated audio conversion tool to decode these files.

Is audio/vnd.nuera.ecelp9600 supported in web browsers?

No, modern web browsers (Chrome, Firefox, Safari) do not support this vendor-specific MIME type in the HTML5 <audio> tag. To play this content on the web, you should convert the file to a standard format like audio/mpeg (MP3) or audio/wav.

How do I configure an Apache server to serve these files correctly?

You can ensure the server sends the correct headers by adding the MIME type definition to your .htaccess file or main configuration. Add the line: AddType audio/vnd.nuera.ecelp9600 .ecelp9600.

How do I add support for this MIME type in Nginx?

Open your mime.types file (usually located in /etc/nginx/) and add the entry inside the types { ... } block: audio/vnd.nuera.ecelp9600 ecelp9600;. Then, reload Nginx using sudo service nginx reload.

What does the 'vnd' stand for in this MIME type?

The prefix vnd stands for "vendor," indicating that audio/vnd.nuera.ecelp9600 is a proprietary format controlled by a specific organization (Nuera Corporation), rather than a standard open format defined by the IETF.

Can I convert .ecelp9600 files to MP3?

Yes, but because the codec is proprietary, you may need specific transcoding software that supports Nuera algorithms. General-purpose converters might fail unless they have the specific decoder installed.

General FAQ

What is a MIME type?

A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.

MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.

MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.

How do I find the MIME type for a file?

You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.

Why are multiple MIME types listed for one extension?

Different applications and historical conventions may use alternative MIME identifiers for the same kind of file. Showing them all helps ensure compatibility across systems.