1. Click "Choose Files" button and select your NIST files you would like converted.
2. Click on the “Convert to AC3” button to start the conversion.
3. When the status change to “Done” click the “Download AC3” button
To convert in the opposite direction, click here to convert from AC3 to NIST
NIST files are sound recordings stored in the National Institute of Standards and Technology's Speech Header Resources Exchange Format (SPHERE), designed for speech recognition software like Hidden Markov Model Toolkit. NIST files consist of both metadata information as well as audio data in waveform format; VLC can playback these files while soX or FFmpeg may convert them to more common ...
Dolby Laboratories developed AC3 as an audio file format. Based on the Modified Discrete Cosine Transform (MDCT) lossy compression algorithm and perceptual coding principles, AC3 can encode sound data for DVDs, HDTV broadcasts and digital cable and satellite transmissions. AC3 operates between 20Hz and 20,000Hz, which corresponds to human hearing frequencies, making it ideally suited to creating the most lifelike ...
Upload a NIST file, click "Convert", and use additional options to quickly modify its contents before downloading the final AC3 file after processing has completed.
Our NIST to AC3 converter works on Windows, Mac OS, Linux, iOS and Android systems alike - our servers automatically process each file without requiring you to install plug-ins or applications!
We guarantee 100%% of the privacy and have no access to your files once uploaded/converted, making them inaccessible by anyone and completely protecting them.
