ALAC
E637122
ALAC (Apple Lossless Audio Codec) is Apple’s proprietary lossless audio compression format designed to reduce file size without sacrificing sound quality, commonly used in iTunes and Apple devices.
All labels observed (1)
| Label | Occurrences |
|---|---|
| ALAC canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7033370 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: ALAC Context triple: [FLAC, competesWith, ALAC]
-
A.
ALAC
ALAC is the At-Large Advisory Committee within ICANN that represents the interests of individual Internet users in global domain name policy development.
-
B.
FLAC
FLAC (Free Lossless Audio Codec) is an open-source audio compression format that reduces file size without any loss in sound quality, commonly used for high-fidelity music archiving and playback.
-
C.
Dolby AC-4
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.
-
D.
Dolby TrueHD
Dolby TrueHD is a lossless multichannel audio codec designed for high-definition home entertainment formats like Blu-ray to deliver studio-quality surround sound.
-
E.
Dolby Digital
Dolby Digital is a multichannel digital audio encoding system widely used in cinema, home theater, and broadcast to deliver surround sound.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: ALAC Target entity description: ALAC (Apple Lossless Audio Codec) is Apple’s proprietary lossless audio compression format designed to reduce file size without sacrificing sound quality, commonly used in iTunes and Apple devices.
-
A.
ALAC
ALAC is the At-Large Advisory Committee within ICANN that represents the interests of individual Internet users in global domain name policy development.
-
B.
FLAC
FLAC (Free Lossless Audio Codec) is an open-source audio compression format that reduces file size without any loss in sound quality, commonly used for high-fidelity music archiving and playback.
-
C.
Dolby AC-4
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.
-
D.
Dolby TrueHD
Dolby TrueHD is a lossless multichannel audio codec designed for high-definition home entertainment formats like Blu-ray to deliver studio-quality surround sound.
-
E.
Dolby Digital
Dolby Digital is a multichannel digital audio encoding system widely used in cinema, home theater, and broadcast to deliver surround sound.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
audio codec
ⓘ
audio file format ⓘ lossless audio codec ⓘ |
| abbreviationOf | Apple Lossless Audio Codec NERFINISHED ⓘ |
| audioQuality | CD-quality or better ⓘ |
| backwardCompatibleWith | older iTunes versions (for playback) ⓘ |
| canStore | high-resolution audio ⓘ |
| compressionRatioRange | 40–60% ⓘ |
| compressionType | lossless ⓘ |
| containerFormat |
CAF
ⓘ
MP4 ⓘ |
| decodingComplexity | moderate ⓘ |
| developer | Apple Inc. ⓘ |
| encodingLatency | low ⓘ |
| fileExtension |
.caf
ⓘ
.m4a ⓘ |
| fullName | Apple Lossless Audio Codec NERFINISHED ⓘ |
| initialReleaseYear | 2004 ⓘ |
| isOpenSource | true ⓘ |
| isProprietary | true ⓘ |
| losslessComparedTo | uncompressed PCM audio ⓘ |
| openSourceReleaseYear | 2011 ⓘ |
| optimizedFor | Apple ecosystem NERFINISHED ⓘ |
| relatedCodec | AAC NERFINISHED ⓘ |
| similarTo |
FLAC
NERFINISHED
ⓘ
Monkey's Audio NERFINISHED ⓘ WavPack NERFINISHED ⓘ |
| sourceCodeLicense | Apache License 2.0 NERFINISHED ⓘ |
| specificationPublished | true ⓘ |
| supportsBitDepthUpTo | 32-bit ⓘ |
| supportsChannelsUpTo | 8 ⓘ |
| supportsDRMViaContainer | true ⓘ |
| supportsGaplessPlayback | true ⓘ |
| supportsMetadata | true ⓘ |
| supportsMetadataStandard |
ID3 (via container)
ⓘ
iTunes-style metadata ⓘ |
| supportsSampleRateUpTo | 384 kHz ⓘ |
| supportsStreamingIn | Apple Music lossless tier ⓘ |
| typicalBitDepth |
16-bit
ⓘ
24-bit ⓘ |
| usedIn |
Apple Music
NERFINISHED
ⓘ
Apple Watch NERFINISHED ⓘ HomePod NERFINISHED ⓘ iOS NERFINISHED ⓘ iPadOS NERFINISHED ⓘ iPod NERFINISHED ⓘ iTunes NERFINISHED ⓘ macOS NERFINISHED ⓘ tvOS NERFINISHED ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: ALAC Description of subject: ALAC (Apple Lossless Audio Codec) is Apple’s proprietary lossless audio compression format designed to reduce file size without sacrificing sound quality, commonly used in iTunes and Apple devices.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.