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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 == |
| | | | |
| − | === '''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 PhD student working under Abel on physical modeling and analysis of reverberant spaces
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| − | * Miriam Kolar is a PhD 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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| − | * Preliminary on-site tests [to be completed 3/08]
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| − | * Specification of test and recording equipment [ongoing; 1-2/08]
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| − | * Purchase and assemble gear [ongoing; 2-?/08]
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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 -- sources'''
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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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| − | * $3000 (2/08); > $6000 (summer 2008) equipment
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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 wall-building, plastering, and removal
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| − | | + | |
| − | '''Funding'''
| + | |
| − | * National Geographic [http://www.nationalgeographic.com/research/grant_application.html#eligibility]
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| − | * Stanford Institute for Creativity in the Arts (SICA) [http://sica.stanford.edu/]
| + | |
| − | | + | |
| − | === '''Phase 2. Analysis and Generation of Physical Model ''' ===
| + | |
| − | | + | |
| − | '''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'''
| + | |
| − | | + | |
| − | '''Funding Sources'''
| + | |
| − | * National Geographic [http://www.nationalgeographic.com/research/grant_application.html#eligibility]
| + | |
| − | * National Endowment for the Humanities- Collaborative Research Grants [http://www.neh.gov/GRANTS/guidelines/collaborative.html#submit]
| + | |
| − | * National Science Foundation- Archaeology and Archaeometry [http://www.nsf.gov/funding/pgm_summ.jsp?pims_id=11690]
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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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