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Record W2035033182 · doi:10.1121/1.4744174

The new Blachford acoustics laboratory

2001· article· en· W2035033182 on OpenAlexaboutno aff
Charles Moritz

Bibliographic record

VenueThe Journal of the Acoustical Society of America · 2001
Typearticle
Languageen
FieldEngineering
TopicAcoustic Wave Phenomena Research
Canadian institutionsnot available
Fundersnot available
KeywordsReverberationAnechoic chamberLaboratory testRoom acousticsAcousticsArchitectural acousticsEngineeringPhysics

Abstract

fetched live from OpenAlex

In 1968, HL Blachford, Inc. constructed their first acoustics laboratory next to their Troy, Michigan plant. This laboratory consisted of a 216-m3 reverberation room with an adjacent large hemianechoic room approximately 12 m long, 5 m wide, and 4.5 m high. After several ownership changes, a plant that used to belong to HL Blachford, Inc. was purchased in 1995 by HL Blachford Ltd. of Canada, and became the new headquarters of a new company called Blachford, Inc. It quickly became obvious that a new laboratory was required for vehicle testing and acoustical material development. The design of a new facility began in 1997 and was based on the old laboratory; however, the new design incorporates design changes to increase the capacity, capabilities, and quality of the facility. The new laboratory is currently under construction and features a larger hemi-anechoic room, approximately 15 m long, 9 m wide, and 6 m high, and a nonadjacent 200-m3 reverberation room with several horizontal and vertical test sections for vehicle component and material testing.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.003
metaresearch head score (Gemma)0.003
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.130
Threshold uncertainty score0.435

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0030.003
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0030.001
Science and technology studies0.0040.002
Scholarly communication0.0040.004
Open science0.0020.004
Research integrity0.0020.003
Insufficient payload (model declined to judge)0.1300.046

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.011
GPT teacher head0.247
Teacher spread0.236 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designNot applicable
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2001
Admission routes1
Has abstractyes

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Same venueThe Journal of the Acoustical Society of AmericaSame topicAcoustic Wave Phenomena ResearchFrench-language works237,207