OPN2
E736645
OPN2 is a Yamaha FM synthesis sound chip architecture widely used in classic video game consoles and arcade systems for generating rich, distinctive music and sound effects.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T8472798 — 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: OPN2 Context triple: [Yamaha YM2612, architecture, OPN2]
-
A.
Opon
Opon is the former name of what is now Lapu-Lapu City, a highly urbanized city located on Mactan Island in the Philippines.
-
B.
OPAL
OPAL was one of the major particle physics experiments at CERN’s Large Electron–Positron Collider, designed to study electron-positron collisions and probe the Standard Model.
-
C.
Opañel
Opañel is a Madrid Metro station serving the Carabanchel district in Spain.
-
D.
OPU
OPU is the central executive office that supports and coordinates the work of the President of Ukraine.
-
E.
OPA
OPA is a U.S. federal law enacted in 1990 that strengthens regulations and liability standards for preventing and responding to oil spills in navigable waters and shorelines.
- 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: OPN2 Target entity description: OPN2 is a Yamaha FM synthesis sound chip architecture widely used in classic video game consoles and arcade systems for generating rich, distinctive music and sound effects.
-
A.
Opon
Opon is the former name of what is now Lapu-Lapu City, a highly urbanized city located on Mactan Island in the Philippines.
-
B.
OPAL
OPAL was one of the major particle physics experiments at CERN’s Large Electron–Positron Collider, designed to study electron-positron collisions and probe the Standard Model.
-
C.
Opañel
Opañel is a Madrid Metro station serving the Carabanchel district in Spain.
-
D.
OPU
OPU is the central executive office that supports and coordinates the work of the President of Ukraine.
-
E.
OPA
OPA is a U.S. federal law enacted in 1990 that strengthens regulations and liability standards for preventing and responding to oil spills in navigable waters and shorelines.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Yamaha FM synthesis sound chip architecture
ⓘ
sound chip family ⓘ |
| belongsToFamily | Yamaha OPN family ⓘ |
| developedBy | Yamaha Corporation ⓘ |
| era |
early 1990s
ⓘ
late 1980s ⓘ |
| hasAlternativeName | YM2612 architecture ⓘ |
| hasBitDepth |
9-bit internal DAC (YM2612)
ⓘ
improved DAC resolution (YM3438) ⓘ |
| hasChannelCount | 6 FM channels ⓘ |
| hasControlInterface | register-based control via CPU ⓘ |
| hasEnvelopeType | ADSR-like envelope ⓘ |
| hasLimitation |
audible DAC distortion in some implementations
ⓘ
limited number of channels ⓘ |
| hasModulationCapability |
amplitude modulation via LFO
ⓘ
operator frequency modulation ⓘ |
| hasNotableChipImplementation |
YM2612
ⓘ
linked to:
Yamaha YM2612
YM3438 ⓘ |
| hasOutputType | analog audio output ⓘ |
| hasWaveformType | sine-based operators ⓘ |
| influenced |
design of later FM synthesis chips
ⓘ
sound of 16-bit console era ⓘ |
| notableFor |
distinctive crunchy FM sound
ⓘ
iconic soundtracks in Sega Genesis games ⓘ widespread use in 16-bit era consoles ⓘ |
| relatedTo |
OPN (YM2203)
ⓘ
linked to:
Yamaha YM2203
OPN3 / later Yamaha FM architectures ⓘ
linked to:
Yamaha OPN family
OPNA (YM2608) ⓘ
linked to:
Yamaha YM2608
OPNB (YM2610) ⓘ
linked to:
Yamaha YM2610
|
| supportsFeature |
4-operator FM synthesis
ⓘ
LFO modulation ⓘ envelope generators ⓘ hardware timers ⓘ stereo output ⓘ |
| typicalClockFrequency | around 7.67 MHz in Sega Mega Drive/Genesis ⓘ |
| usedBy |
chiptune musicians
ⓘ
video game composers ⓘ |
| usedFor |
background music in arcade games
ⓘ
sound effects ⓘ video game music ⓘ |
| usedIn |
Sega Genesis
ⓘ
linked to:
Sega Mega Drive
Sega Genesis Model 2 ⓘ Sega Mega Drive ⓘ Sega Mega Drive II ⓘ
linked to:
Sega Genesis Model 2
various arcade system boards ⓘ |
| usedInGenre |
chiptune
ⓘ
electronic music experiments ⓘ video game music ⓘ |
| usesSynthesisType | FM synthesis ⓘ |
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: OPN2 Description of subject: OPN2 is a Yamaha FM synthesis sound chip architecture widely used in classic video game consoles and arcade systems for generating rich, distinctive music and sound effects.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: OPN2