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5 changed files with 51 additions and 47 deletions
65
src/ISM.jl
65
src/ISM.jl
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@ -1,37 +1,38 @@
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export ISM
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function ISM(
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tx::TxRx,
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array::TxRxArray,
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tx::TxRx,
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room::AbstractRoom,
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config::ISMConfig;
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)
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Pn, o, B = array.p, array.origin, array.B
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[ISM(TxRx(B*p.position+o, B*p.B, p.directivity), tx, room, config) for p in Pn]
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rxs, origin, B = array.txrx, array.origin, array.B
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l2g = rx -> TxRx(B * rx.position + origin, B * rx.B, rx.directivity)
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[ISM(tx, rx |> l2g, room, config) for rx in rxs]
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end
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"""
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"""
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function ISM(
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tx::TxRx,
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rxs::AbstractVector{<:TxRx},
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tx::TxRx,
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room::AbstractRoom,
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config::ISMConfig;
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)
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[ISM(rx, tx, room, config) for rx in rxs]
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[ISM(rx, tx, room, config) for rx in rxs]
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end
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"""
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"""
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function ISM(
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rx::TxRx,
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tx::TxRx,
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rx::TxRx,
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room::RectangularRoom,
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config::ISMConfig;
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)
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@ -53,9 +54,9 @@ function ISM(
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if config.hp
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return AllenBerkley_highpass100(h, config.fs)
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# Zmień to na funkcie operującą na zaalokowanym już h
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# TODO: Zmień to na funkcie operującą na zaalokowanym już h
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# AllenBerkley_highpass100!(h, config.fs)
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#return h
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# return h
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else
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return h
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end
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@ -67,15 +68,15 @@ end
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"""
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function ISM_RectangularRoom_core(
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tx::SVector{3, T}, # transmitter position
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rx::SVector{3, T}, # reveiver position
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B::SMatrix{3, 3, T}, # receiver orientation
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tx::SVector{3,T}, # transmitter position
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rx::SVector{3,T}, # reveiver position
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B::SMatrix{3,3,T}, # receiver orientation
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dp::AbstractDirectivityPattern, # Receiver directivity pattern
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L::Tuple{T, T, T}, # room size (Lx, Ly, Lz)
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β::Tuple{T, T, T, T, T, T}, # Reflection coefficients (βx1, βx2, βy1, βy2, βz1, βz2)
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L::Tuple{T,T,T}, # room size (Lx, Ly, Lz)
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β::Tuple{T,T,T,T,T,T}, # Reflection coefficients (βx1, βx2, βy1, βy2, βz1, βz2)
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c::T, # velocity of the wave
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fs::T, # sampling frequeyncy
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order::Tuple{<:Int, <:Int}, # order of reflections; min max
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order::Tuple{<:Int,<:Int}, # order of reflections; min max
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Nh::Integer, # h lenght in samples
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Wd::T, # Window width
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ISD::T, # Random displacement of image source
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@ -110,15 +111,15 @@ end
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"""
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function ISM_RectangularRoom_core!(
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h::AbstractVector{<:T},
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tx::SVector{3, T}, # transmitter position
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rx::SVector{3, T}, # reveiver position
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B::SMatrix{3, 3, T}, # receiver orientation
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tx::SVector{3,T}, # transmitter position
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rx::SVector{3,T}, # reveiver position
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B::SMatrix{3,3,T}, # receiver orientation
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dp::AbstractDirectivityPattern, # Receiver directivity pattern
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L::Tuple{T, T, T}, # room size (Lx, Ly, Lz)
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β::Tuple{T, T, T, T, T, T}, # Reflection coefficients (βx1, βx2, βy1, βy2, βz1, βz2)
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L::Tuple{T,T,T}, # room size (Lx, Ly, Lz)
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β::Tuple{T,T,T,T,T,T}, # Reflection coefficients (βx1, βx2, βy1, βy2, βz1, βz2)
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c::T, # velocity of the wave
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fs::T, # sampling frequeyncy
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order::Tuple{<:Int, <:Int}, # order of reflections; min max
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order::Tuple{<:Int,<:Int}, # order of reflections; min max
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Wd::T, # Window width
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ISD::T, # Random displacement of image source
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lrng::AbstractRNG # random number generator
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@ -128,7 +129,7 @@ function ISM_RectangularRoom_core!(
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Nh = length(h)
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# Samples to distance coefficient [m]
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Γ = c/fs
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Γ = c / fs
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# Transform size of the room from meters to samples
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Lₛ = L ./ Γ
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@ -158,7 +159,7 @@ function ISM_RectangularRoom_core!(
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if o_min <= o && (o <= o_max || o_max == -1)
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# Compute Rp part
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for i = 1:3
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Rp[i] = (1 .- 2 * p[i]) * tx[i] - rx[i]
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Rp[i] = (1 .- 2 * p[i]) * tx[i] - rx[i]
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end
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# Position of [randomized] image source for given permutation
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@ -174,30 +175,30 @@ function ISM_RectangularRoom_core!(
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dist = norm(tx_isp)
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# Propagation time between receiver and image source
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τ = dist/c
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τ = dist / c
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if τ <= Nh/fs # Check if it still in transfer function range
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if τ <= Nh / fs # Check if it still in transfer function range
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# Compute value of reflection coefficients
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b .= β .^ abs.((n-q, n, l-j, l, m-k, m))
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b .= β .^ abs.((n - q, n, l - j, l, m - k, m))
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# Direction of Arrival of ray
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DoA .= tx_isp./dist
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DoA .= tx_isp ./ dist
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# Compute receiver directivity gain
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DG = directivity_pattern(SVector{3}(DoA), B, dp)
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# Compute attenuation coefficient
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A = DG * prod(b)/(4π * dist)
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A = DG * prod(b) / (4π * dist)
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# Compute range of samples in transfer function
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i_s = max(ceil(Int, (τ-Wd/2)*fs)+1, 1) # start
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i_e = min(floor(Int, (τ+Wd/2)*fs)+1, Nh) # end
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i_s = max(ceil(Int, (τ - Wd / 2) * fs) + 1, 1) # start
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i_e = min(floor(Int, (τ + Wd / 2) * fs) + 1, Nh) # end
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# Insert yet another impulse into transfer function
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for i ∈ i_s:i_e
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t = (i-1)/fs - τ # time signature
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w = 0.5 * (1.0 + cos(2π*t/Wd)) # Hann window
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t = (i - 1) / fs - τ # time signature
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w = 0.5 * (1.0 + cos(2π * t / Wd)) # Hann window
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h[i] += w * A * sinc(fs * t) # sinc
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end
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end
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@ -15,6 +15,7 @@ include("utils.jl")
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include("ISM.jl")
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include("moving_sources.jl")
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export WASN
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include("WASN.jl")
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end # module
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17
src/WASN.jl
17
src/WASN.jl
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@ -16,11 +16,7 @@ struct Node
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δ::Real
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end
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function Node(rx, δ=0.0)
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Node(rx, δ)
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end
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struct Event
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struct Event # NOTE: TxNode może będzie lepszą nazwa?
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tx::TxRx
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emission::Real
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fs::Real
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@ -33,8 +29,12 @@ function synth_events(
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room::AbstractRoom,
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rir_config::AbstractRIRConfig,
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)
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hs = [ISM(nodes[i].rx, events[j].tx, room, rir_config) for i in eachindex(nodes), j in eachindex(events)]
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s = [[conv(h, events[j].signal) for h in hs[i, j]] for i in eachindex(nodes), j in eachindex(events)]
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hs = Matrix{Vector{Vector{Float64}}}(undef, nodes |> length, events |> length)
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iter = Iterators.product(nodes |> eachindex, events |> eachindex) |> collect
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Threads.@threads for (i,j) ∈ iter
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hs[i,j] = ISM(events[j].tx, nodes[i].rx, room, rir_config)
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end
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s = [[conv(h, events[j].signal) for h in hs[i, j]] for i ∈ eachindex(nodes), j ∈ eachindex(events)]
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(signals=s, hs=hs)
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end
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@ -54,9 +54,10 @@ function synthesise(
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# Find length of the output signal
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δ_max = [node.δ for node ∈ nodes] |> maximum;
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N = [ceil(Int, (events[j].emission + δ_max)*fs) + length(e_signal[1, j][1]) for j ∈ eachindex(events)] |> maximum
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N += floor(Int, fs)
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# Allocate memory for output signals
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output = [zeros(N, node.rx.p |> length) for node ∈ nodes]
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output = [zeros(N, node.rx.txrx |> length) for node ∈ nodes]
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for i ∈ eachindex(nodes), j ∈ eachindex(events)
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shift_n = floor(Int, (events[j].emission + nodes[i].δ)*fs)
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@ -8,8 +8,8 @@ abstract type AbstractRoom end
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struct RectangularRoom{T<:Real} <: AbstractRoom
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c::T
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L::Tuple{T, T, T}
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β::Tuple{T, T, T, T, T, T}
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L::Tuple{T,T,T}
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β::Tuple{T,T,T,T,T,T}
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end
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@ -19,8 +19,8 @@ abstract type AbstractRIRConfig end
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"""
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"""
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struct ISMConfig{T<:Real, I<:Integer, R<:AbstractRNG} <: AbstractRIRConfig
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order::Tuple{I, I} # Order of reflection [low, high]
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struct ISMConfig{T<:Real,I<:Integer,R<:AbstractRNG} <: AbstractRIRConfig
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order::Tuple{I,I} # Order of reflection [low, high]
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fs::T # Sampling frequency
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N::I # Number of samples in impulse response
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Wd::T # Single impulse width
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@ -5,11 +5,12 @@ export h2RT60, Sabine_RT60
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"""
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function h2RT60(h::AbstractVector{<:Number}, Fs::Real)
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cs = cumsum(reverse(h.^2))
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edc = 10*log10.(reverse(cs./cs[end])) # energy decay curve
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dB(x) = 10log10(x)
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normalize(x) = x ./ x[begin]
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edc = h .|> abs2 |> reverse |> cumsum |> reverse |> normalize .|> dB
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ind = findfirst(edc .<= -60. )
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if ind == nothing
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if ind === nothing
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rt = length(h)/Fs
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else
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rt = ind/Fs
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