Subband Codec
E486616
Subband Codec (SBC) is an audio compression format commonly used over Bluetooth for efficiently transmitting medium-quality stereo sound with relatively low computational complexity.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Subband Codec canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5015658 — 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: Subband Codec Context triple: [SBC, fullName, Subband Codec]
-
A.
Advanced Audio Coding
Advanced Audio Coding is a lossy digital audio compression format designed to provide better sound quality than MP3 at similar or lower bitrates and widely used in streaming, broadcasting, and multimedia applications.
-
B.
G.726
G.726 is an ITU-T audio codec standard that specifies adaptive differential pulse-code modulation (ADPCM) for compressing voice signals at multiple bit rates, commonly used in telephony.
-
C.
Context-Adaptive Binary Arithmetic Coding
Context-Adaptive Binary Arithmetic Coding (CABAC) is an advanced lossless entropy coding technique used in modern video compression standards to achieve high compression efficiency by modeling symbol probabilities with context.
-
D.
Speex
Speex is an open-source, patent-free audio compression codec designed primarily for efficient, high-quality speech encoding.
-
E.
G.723.1
G.723.1 is an ITU-T audio codec standard designed for low-bit-rate voice compression, commonly used in VoIP and multimedia communication systems.
- 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: Subband Codec Target entity description: Subband Codec (SBC) is an audio compression format commonly used over Bluetooth for efficiently transmitting medium-quality stereo sound with relatively low computational complexity.
-
A.
Advanced Audio Coding
Advanced Audio Coding is a lossy digital audio compression format designed to provide better sound quality than MP3 at similar or lower bitrates and widely used in streaming, broadcasting, and multimedia applications.
-
B.
G.726
G.726 is an ITU-T audio codec standard that specifies adaptive differential pulse-code modulation (ADPCM) for compressing voice signals at multiple bit rates, commonly used in telephony.
-
C.
Context-Adaptive Binary Arithmetic Coding
Context-Adaptive Binary Arithmetic Coding (CABAC) is an advanced lossless entropy coding technique used in modern video compression standards to achieve high compression efficiency by modeling symbol probabilities with context.
-
D.
Speex
Speex is an open-source, patent-free audio compression codec designed primarily for efficient, high-quality speech encoding.
-
E.
G.723.1
G.723.1 is an ITU-T audio codec standard designed for low-bit-rate voice compression, commonly used in VoIP and multimedia communication systems.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
Bluetooth audio codec
ⓘ
audio compression format ⓘ |
| abbreviation | SBC ⓘ |
| basedOn |
adaptive bit allocation
ⓘ
filter bank subband decomposition ⓘ scale factor quantization ⓘ |
| comparedWith |
AAC
ⓘ
LC3 ⓘ LDAC ⓘ aptX ⓘ |
| designedFor |
low-complexity decoder implementation
ⓘ
real-time audio streaming ⓘ |
| developedBy | Bluetooth Special Interest Group ⓘ |
| encodedAs | frames with header, scale factors, and subband samples ⓘ |
| hasLimitation |
fixed frame structure
ⓘ
medium audio quality compared to modern codecs ⓘ |
| hasProperty |
lossy compression
ⓘ
low computational complexity ⓘ subband coding ⓘ supports joint stereo ⓘ supports mono audio ⓘ supports multichannel configurations up to 2 channels in A2DP ⓘ supports stereo audio ⓘ |
| introducedIn | Bluetooth 1.2 era ⓘ |
| mandatoryIn |
Bluetooth A2DP profile
ⓘ
linked to:
Bluetooth A2DP
|
| standardizedIn |
Bluetooth A2DP specification
ⓘ
linked to:
Bluetooth A2DP
|
| supportsAllocationMethod |
SNR
ⓘ
loudness ⓘ |
| supportsBitpoolRange | 2 to 250 ⓘ |
| supportsBlockLength |
12
ⓘ
16 ⓘ 4 ⓘ 8 ⓘ |
| supportsChannelMode |
dual channel
ⓘ
joint stereo ⓘ mono ⓘ stereo ⓘ |
| supportsSampleRate |
16000 Hz
ⓘ
32000 Hz ⓘ 44100 Hz ⓘ 48000 Hz ⓘ |
| supportsSubbands |
4
ⓘ
8 ⓘ |
| typicalBitrateRange | 192 kbit/s to 345 kbit/s for stereo at 44.1 kHz ⓘ |
| usedFor |
compressing digital audio
ⓘ
medium-quality stereo sound ⓘ transmitting audio over Bluetooth ⓘ |
| usedIn |
Bluetooth car audio systems
ⓘ
Bluetooth headphones ⓘ Bluetooth headsets ⓘ Bluetooth speakers ⓘ |
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: Subband Codec Description of subject: Subband Codec (SBC) is an audio compression format commonly used over Bluetooth for efficiently transmitting medium-quality stereo sound with relatively low computational complexity.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.