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− | = Chavín de Huántar Archaeological Acoustics Project = | + | = [http://ccrma.stanford.edu/groups/chavin/ Chavín de Huántar Archaeological Acoustics Project] = |
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− | =='''Acoustic Measurement, Archiving, Analysis and Modeling, and Simulation/Installation'''== | + | =='''Acoustic Measurement, Archiving, Analysis, Modeling, and Simulation/Installation''' – A collaboration between Stanford University's Center for Computer Research in Music and Acoustics (CCRMA) and Archaeology/Anthropology == |
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− | === '''Team Information''' ===
| + | Project website now at: [http://ccrma.stanford.edu/groups/chavin/ ccrma.stanford.edu/groups/chavin/ ] |
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− | '''Co-investigators:'''
| + | [[Category:Projects]] |
− | * John Rick, PhD, Professor, Stanford University, Archaeology/Anthropology
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− | * Julius O. Smith, PhD, Professor, Stanford University, Center for Computer Research in Music and Acoustics (CCRMA)/Electrical Engineering (by courtesy)
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− | * Jonathan S. Abel, PhD, Consulting Professor, Stanford University, CCRMA
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− | * Patty Huang, MA, Graduate Student, Stanford University, CCRMA
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− | * Miriam Kolar, MFA, Graduate Student, Stanford University, CCRMA
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− | '''Coordinator:'''
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− | * John Chowning, DMA, Professor Emeritus, Stanford University, CCRMA/Music
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− | '''Local collaborators:'''
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− | * (Museum director)
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− | '''Team Background:'''
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− | * John Rick has been heading excavations and directing research at the Chavín site since 1995
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− | * Digital waveguide techniques were pioneered at CCRMA by Julius O. Smith III
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− | * Julius O. Smith and Jonathan S. Abel have been working together on acoustic array processing and related problems since 1985
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− | * Patty Huang is a 4th year graduate student working under Abel on physical modeling of reverberant spaces
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− | * Miriam Kolar is a 2nd year graduate student with extensive field experience in recording engineering
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− | * John Chowning is a composer having long standing interest in spatial modeling
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− | * CCRMA has expertise in field measurements, psychoacoustics, digital signal processing, and artificial reverberation
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− | === '''Phase 1. Preparation and on-site measurements ''' ===
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− | Preparation
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− | * Preliminary on-site tests [completed 12/07]
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− | * Specification of test and recording equipment [completed 1/08]
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− | * Purchase and assemble gear
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− | Simulation Trials in local environments
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− | * CCRMA stairwell, hallways, “Pit”
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− | * SU subsurface spaces-“famous” steam tunnels
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− | * Outdoor space similar to Chavín Circular Plaza?
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− | Specify provisional mapping for sound source-receiver placements from CAD rendering [in progress 1/08]
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− | * from each chamber to main space
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− | * least damaged areas
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− | * with and without plastering
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− | * peculiar geometries (e.g. , adjoining (comb-like) chambers, etc)
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− | On site measurements at Chavín
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− | * Plastering of section of Chavín (selection of plastered sections is critical (soon after arrival to allow for drying)
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− | * Adjust mapping of source-receiver points
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− | Measurements -- impulse response
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− | * balloon pops
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− | * speaker-generated sinusoidal chirps
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− | * other signals
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− | * strombus trumpet live/recorded
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− | * record stream/water sound, wind noise
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− | Measurements -- receivers
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− | * distributed mics
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− | * in-ear-canal mics
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− | Costs
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− | * $5000 equipment (link to gear and price list)
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− | * $8000 travel and accommodations (2 weeks on site) for 2 faculty (Rick, Abel), 2 graduates students (Huang, Kolar)
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− | * $1000 on site plastering and removal
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− | Funding
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− | * National Geographic [http://www.nationalgeographic.com/research/grant_application.html#eligibility]
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− | * SU internal
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− | === '''Phase 2. Analysis and Generation of Physical Model ''' ===
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− | Analysis
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− | * compare plastered and unplastered and extrapolate to the entire structure
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− | * IR measurement to render the modeled spaces
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− | * measurement processing to model the pristine state
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− | * Strombus trumpet
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− | Physical Model
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− | * calculate acoustical properties of materials
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− | * rendering from architectural models
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− | * use waveguide mesh processing
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− | * Stanford invention of and current work with waveguide mesh allows effective method to address computation/simulation of acoustical spaces
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− | * process and match/fit measurements then extend to parts of site that aren't necessarily intact or accessible for comprehensive measurements (plastering).
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− | Costs
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− | Funding Sources
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− | * National Geographic [http://www.nationalgeographic.com/research/grant_application.html#eligibility]
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− | * National Endowment for the Humanities- Collaborative Research Grants [http://www.neh.gov/GRANTS/guidelines/collaborative.html#submit]
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− | === '''Phase 3. Electroacoustic simulation & Public interface''' ===
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− | Locations
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− | * Stanford
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− | * Chavín Museum
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− | * Quantify and compensate for support structures
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− | * Simulation of plastered walls
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− | * National Museum Peru
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− | Equipment
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− | Public interface
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− | * virtual walkthrough (headphone tour) in present condition
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− | * virtual walkthrough (headphone tour) in reconstructed condition
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− | * enhanced reverberation system for visitor experience
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− | * installations of replica in various formats (online, DVD, museum, show, etc.)
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