DSS files are limited to 5000 Hz while DS2 files (the newer technology) are very clean up to 8000 Hz and better suited for transcription. This is great for music but lousy for transcribing. From NaturallySpeaking's perspective, noise that needs to be filtered out. Wav files are typically more full frequency recordings that are sampled at a higher rate which is unnecessary for speech recognition and can even get in the way by capturing sound that cannot be translated into words.
Professional transcriptionists frequently have to send recordings back and forth and wav files can be huge and unwieldy.Ģ. A DS2 recording is only 1/12 the size of the wav file which makes a big difference when you're attempting to upload to an FTP site or attach to an e-mail. The advantages of utilizing DS2 algorithms include:ġ. When you compress an MP3 file, you lose fidelity in a major way because you're squashing the sound but this is not the case with DSS or DS2 files which are designed specifically for transcribing. The term “lossless fidelity” means exactly what it says. The 8 Gb SDHC memory card in our DS-5000 will hold 636 hours of the highest quality dictation and even if we were recording in uncompressed wav file format, we would still be talking about 53 hours but storage isn't the main reason for the creation of the DSS algorithms.ĭSS and DS2 (the new standard) is a form of lossless fidelity that compresses recordings by a ratio of 12 to 1. Your assumption about memory being cheap makes perfect sense on the surface.
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