SDH subtitles go beyond standard captions by including speaker identification, sound effects, and non-speech audio cues. Make your content fully accessible with Sonix's automated SDH subtitle generation.
SDH subtitles include speaker labels so viewers know who is talking. Sonix automatically detects speakers and labels them throughout your content.
Describe important sounds like [door slams], [phone rings], or [applause]. Non-speech audio cues help deaf and hard of hearing viewers understand the full context.
Include music descriptions like [upbeat music] or [suspenseful score]. Emotional context from audio is preserved for all viewers.
SDH subtitles are precisely synced with audio and video. Sonix provides word-level timestamps for accurate caption display.
Export SDH subtitles as SRT, VTT, SCC, or other broadcast-standard formats. Compatible with all major video platforms and players.
SDH stands for Subtitles for the Deaf and Hard of Hearing. Unlike standard subtitles that only show spoken dialogue, SDH includes speaker identification, sound effect descriptions [like door slams], music cues [soft piano playing], and other non-speech audio information essential for viewers who cannot hear.
SDH and closed captions serve similar purposes but differ in format. Closed captions (CC) were designed for TV broadcast and use specific technical standards. SDH uses standard subtitle formats (SRT, VTT) but includes the same accessibility features—speaker IDs, sound effects, and music descriptions. SDH is more common for streaming and online video.
SDH subtitles make video content fully accessible to deaf and hard of hearing viewers. Without SDH, viewers miss crucial context—who's speaking, important sounds, emotional music cues. SDH also helps viewers in noisy environments, non-native speakers, and anyone who prefers reading along.
Sonix automatically generates accurate transcriptions with speaker diarization (speaker identification). You can then add SDH-specific elements like sound effect descriptions and music cues using our editor. Our AI handles the heavy lifting while you add the finishing touches.
Sonix exports SDH subtitles in SRT, VTT, SCC, TTML, and other formats. SRT and VTT are most common for web video. SCC is standard for broadcast television. All formats preserve your SDH formatting including speaker labels and sound descriptions.
In many cases, yes. The ADA (Americans with Disabilities Act) requires accessible content for public accommodations. The FCC requires closed captions for TV broadcasts. Many streaming platforms and educational institutions require SDH subtitles. Providing SDH subtitles also improves SEO and audience reach.
SDH subtitles ensure deaf and hard of hearing viewers get the complete experience—not just dialogue, but all the audio context that brings content to life.
Meet ADA, FCC, and platform requirements for accessible content. Avoid legal issues and reach the widest possible audience.
SDH subtitles help all viewers—those in quiet environments, non-native speakers, and anyone who prefers reading. Grow your audience.
Sonix provides broadcast-quality SDH subtitles with accurate timing and proper formatting for any platform or use case.
Sonix combines AI-powered transcription with easy SDH editing tools. Our speaker diarization automatically identifies speakers, and our editor makes adding sound descriptions and music cues simple. Export to any format—all in one platform.
Video producers, educational institutions, corporate communications teams, streaming platforms, and broadcasters use Sonix for SDH subtitles. Anyone who needs accessible video content benefits from our fast, accurate SDH workflow.
Sonix delivers 99% accuracy on clear audio. Our speaker diarization correctly identifies different speakers, and our word-level timestamps ensure perfect synchronization. You'll spend minutes polishing, not hours transcribing.
Absolutely. Sonix processes files in parallel and supports batch uploads. Enterprise customers subtitle thousands of hours of content monthly. Our API enables full automation for high-volume workflows.
I'm very impressed about the accuracy. The transcript needs a little editing, but just minor correction. I think the interface is straightforward and user-friendly. I also like the audio-transcript matching playback functionality. I've been very deterred to use recording during my interviews because it takes a tremendous amount of time to transcribe.
The experience is fantastic, the system is easy to use, and transcription quality in different languages is unbeatable. Sonix is the best system I've tried so far...and I know one thing or two about languages/translation and voice recognition.
I was amazed by your accuracy. What I used were not very good recordings. One with an American accent, another one Australian and many background noises. The transcript exc...
I absolutely love what you guys have done with this. Sonix is literally a magical product that has helped me so much already and I will be using this for a long time coming.
I found out out you guys because I had to do some transcribing for me yearbook class and my friend recommended you guys. It was a very easy process and it took hours off the time I had to a...
Sonix is AWESOME and extremely accurate. This software has it all. I wish that all of the software that I use on a daily basis had the complete and thoughtfully created functionali...
Easy to use and it saved me SO much time transcribing.
EASY AND QUICK, VERY VERY ACCURATE!!
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