Dolby AC-4
E323796
Dolby AC-4 is an advanced audio codec designed for next-generation broadcast and streaming, offering high-efficiency compression, immersive and personalized sound, and support for modern formats like UHD and HDR video services.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Dolby AC-4 canonical | 2 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
audio codec
ⓘ
digital audio compression format ⓘ |
| alsoKnownAs | AC-4 ⓘ |
| compatibleWith |
UHD TVs with Dolby AC-4 decoders
ⓘ
set-top boxes supporting ATSC 3.0 ⓘ |
| designedFor |
internet streaming
ⓘ
next-generation broadcast ⓘ |
| developer | Dolby Laboratories ⓘ |
| feature |
backward-compatible stereo downmixing
ⓘ
core and enhancement layers ⓘ high-efficiency audio compression ⓘ improved coding efficiency over Dolby Digital Plus ⓘ metadata-driven personalization ⓘ robustness to transmission errors ⓘ scalable audio coding ⓘ support for multiple speaker layouts ⓘ |
| follows | Dolby Digital Plus ⓘ |
| includedIn | HbbTV specifications (as an audio option) ⓘ |
| partOfStandard |
ATSC 3.0 audio system
ⓘ
DVB broadcasting standards ⓘ
surface form:
DVB UHD-1 Phase 2 specification
|
| standardizedBy |
ATSC
ⓘ
DVB broadcasting standards ⓘ
surface form:
DVB
ETSI ⓘ |
| supports |
HDR video services
ⓘ
MPEG-H interoperability features (via standards alignment) ⓘ OTT streaming services ⓘ UHD video services ⓘ accessibility audio tracks ⓘ audio description services ⓘ binaural rendering for headphones ⓘ broadcast TV services ⓘ channel-based audio ⓘ dialogue enhancement ⓘ hybrid audio (objects and channels) ⓘ immersive audio ⓘ loudness and dynamic range control metadata ⓘ loudness normalization ⓘ low-latency audio modes ⓘ multiple languages in one bitstream ⓘ multiple presentations in one bitstream ⓘ object-based audio ⓘ personalized audio ⓘ |
| supportsChannelConfigurations | mono to multichannel immersive layouts ⓘ |
| supportsSampleRates | typical broadcast audio sample rates (e.g., 48 kHz) ⓘ |
| useCase |
interactive and personalized TV experiences
ⓘ
live sports broadcasting ⓘ premium movie streaming ⓘ |
| usedIn |
next-generation TV broadcast systems
ⓘ
streaming platforms supporting Dolby audio ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Dolby Laboratories, Inc.