harmonic analyzer
E45
A harmonic analyzer is a mechanical or electrical device used to decompose complex periodic signals into their constituent sinusoidal components for analysis.
All labels observed (1)
| Label | Occurrences |
|---|---|
| harmonic analyzer canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T81 — 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: harmonic analyzer Context triple: [Differential analyzer, predecessor, harmonic analyzer]
-
A.
Differential analyzer
The Differential Analyzer is an early analog mechanical computer designed to solve differential equations using interconnected rotating shafts and wheels.
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B.
Proceedings of the IRE
Proceedings of the IRE was the flagship technical journal of the Institute of Radio Engineers, publishing influential research in radio, electronics, and early electrical engineering.
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C.
Institute of Radio Engineers
The Institute of Radio Engineers was a major professional organization for radio and electronics engineers that later merged into the Institute of Electrical and Electronics Engineers (IEEE).
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D.
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers (IEEE) is a leading global professional association dedicated to advancing technology through standards development, publications, conferences, and educational activities in electrical engineering, electronics, and related fields.
-
E.
Tim the Beaver
Tim the Beaver is the official mascot of the Massachusetts Institute of Technology, symbolizing the school’s emphasis on engineering, ingenuity, and industriousness.
- 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: harmonic analyzer Target entity description: A harmonic analyzer is a mechanical or electrical device used to decompose complex periodic signals into their constituent sinusoidal components for analysis.
-
A.
Differential analyzer
The Differential Analyzer is an early analog mechanical computer designed to solve differential equations using interconnected rotating shafts and wheels.
-
B.
Proceedings of the IRE
Proceedings of the IRE was the flagship technical journal of the Institute of Radio Engineers, publishing influential research in radio, electronics, and early electrical engineering.
-
C.
Institute of Radio Engineers
The Institute of Radio Engineers was a major professional organization for radio and electronics engineers that later merged into the Institute of Electrical and Electronics Engineers (IEEE).
-
D.
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers (IEEE) is a leading global professional association dedicated to advancing technology through standards development, publications, conferences, and educational activities in electrical engineering, electronics, and related fields.
-
E.
Tim the Beaver
Tim the Beaver is the official mascot of the Massachusetts Institute of Technology, symbolizing the school’s emphasis on engineering, ingenuity, and industriousness.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
measurement device
ⓘ
scientific instrument ⓘ signal analysis device ⓘ |
| alternativeLabel | harmonic analyser ⓘ |
| analyzes |
complex periodic signals
ⓘ
periodic waveforms ⓘ |
| basedOn |
Fourier analysis
ⓘ
Fourier series decomposition ⓘ |
| domain |
applied physics
ⓘ
signal processing ⓘ |
| hasForm |
electrical device
ⓘ
electronic instrument ⓘ mechanical device ⓘ |
| historicallyImplementedAs |
analog electronic instrument
ⓘ
mechanical linkage system ⓘ optical-mechanical instrument ⓘ |
| measures |
harmonic distortion
ⓘ
individual harmonic levels ⓘ total harmonic distortion ⓘ |
| modernImplementation |
computer-based analysis software
ⓘ
digital signal processing instrument ⓘ |
| outputs |
amplitude of each harmonic
ⓘ
frequency components of a signal ⓘ phase of each harmonic ⓘ |
| relatedTo |
Fourier analysis
ⓘ
surface form:
Fourier transform
spectrum analyzer ⓘ wave analyzer ⓘ |
| requiresInput | periodic signal ⓘ |
| usedFor |
acoustics analysis
ⓘ
decomposing complex periodic signals ⓘ frequency-domain analysis ⓘ harmonic analysis ⓘ identifying sinusoidal components of a signal ⓘ measuring amplitudes of harmonics ⓘ measuring phases of harmonics ⓘ power systems analysis ⓘ telecommunications signal analysis ⓘ vibration analysis ⓘ |
| usedIn |
audio engineering
ⓘ
electrical engineering ⓘ mechanical engineering ⓘ power quality assessment ⓘ rotating machinery diagnostics ⓘ |
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: harmonic analyzer Description of subject: A harmonic analyzer is a mechanical or electrical device used to decompose complex periodic signals into their constituent sinusoidal components for analysis.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.