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Nugen DialogCheck Dialog Intelligibility Meter is an AI-powered dialog intelligibility meter, designed to provide an objective measure of speech clarity. Poor dialog intelligibility is one of the biggest sources of complaints from film and television audiences, with studies suggesting that almost half of viewers prefer to watch with subtitles. For an audio engineer who might have been working on a scene for hours or even days, hearing the same dialog hundreds of times, it’s a challenge to predict how a mix will sound to someone hearing it for the first time. DialogCheck combines ‘Listening Effort’ technology developed by Fraunhofer IDMT with a history view inspired by NUGEN Audio’s iconic VisLM loudness meter. The resultant plug-in, driven by dual AI neural networks and developed alongside Netflix, provides a "second opinion"; clear and intuitive data to support audio engineers in making informed decisions for their dialog mix. DialogCheck has won multiple awards including Production Expert's Gold Award and TV Tech's Best Of Show.
Many of the factors that negatively impact dialog intelligibility are outside an audio engineer’s control. Speech might be in a language or dialect that the listener doesn’t understand, or might not have been enunciated clearly, the listener may be hearing impaired, or in a poor listening environment. But there are other factors audio engineers usually do have control over; loudness of dialog, loudness of other audio (e.g. music or background noise), quality of audio signal, and the use of reverb and other effects, to name a few. If the negative impacts of these factors are mitigated as much as possible, the factors outside their control will most likely cause fewer problems. All of these factors, both those outside the control of audio post production engineers and those within their control, fall into what Netflix's TechBlog has referred to as the Dialog Integrity Pipeline.
DialogCheck is a measurement tool, it does not apply any processing to the audio signal. But it does provide an objective value that acts as a signpost for where there might be room for improvement. This might mean adjusting the balance between dialog, music and effects in the mix, it might mean adjusting audio processing or using noise reduction and audio cleanup techniques to adjust the source audio. In some cases it might even mean resorting to ADR! DialogCheck could also be integrated into a pre-production workflow in order to ensure that the source audio already reaches the desired level of clarity.
DialogCheck implements technology developed by Fraunhofer IDMT's Oldenburg Branch for Hearing, Speech and Audio Technology HSA, which uses automatic speech recognition and psychoacoustic modeling. The LE-Meter has been validated through systematic listening tests, and its metrics show a high correlation with subjective assessments of listening effort.
The best gear advice always comes from those who use it the most. That's where you come in! Let the pro audio world hear your voice with a review of the Nugen DialogCheck Dialog Intelligibility Meter - Electronic Delivery . Once you submit your review, please check your email and verify your address to have it posted.
