feat: add varied microphone array presets
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@@ -1,46 +1,132 @@
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$ErrorActionPreference = 'Stop'
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$projectRoot = [System.IO.Path]::GetFullPath((Join-Path $PSScriptRoot '..'))
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$outputPath = Join-Path $projectRoot 'assets/array-geometries/rectangular-16x12.array.json'
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$microphones = [System.Collections.Generic.List[object]]::new()
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$columns = 16
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$rows = 12
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$width = 0.45
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$height = 0.45
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$utf8WithoutBom = [System.Text.UTF8Encoding]::new($false)
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for ($row = 0; $row -lt $rows; $row++) {
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for ($column = 0; $column -lt $columns; $column++) {
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$index = $row * $columns + $column
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$x = -$width / 2 + $column * $width / ($columns - 1)
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$y = -$height / 2 + $row * $height / ($rows - 1)
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$microphones.Add([ordered]@{
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id = 'mic-{0:D3}' -f ($index + 1)
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position = @([Math]::Round($x, 6), [Math]::Round($y, 6), 0)
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})
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}
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}
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$arrayDefinition = [ordered]@{
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schemaVersion = '1.0.0'
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kind = 'micarrsim.array'
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id = 'rectangular-16x12'
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name = '16x12 rectangular baseline'
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description = '192-channel uniform rectangular layout on a 0.45 m square aperture'
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units = 'm'
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coordinateSystem = [ordered]@{
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function New-CoordinateSystem {
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return [ordered]@{
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handedness = 'right'
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xAxis = 'right'
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yAxis = 'up'
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zAxis = 'toward-scene'
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}
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aperture = [ordered]@{ width = $width; height = $height }
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microphones = $microphones
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}
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$json = $arrayDefinition | ConvertTo-Json -Depth 8
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[System.IO.File]::WriteAllText($outputPath, $json + [Environment]::NewLine, [System.Text.UTF8Encoding]::new($false))
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Write-Host "Generated $($microphones.Count) microphones: $outputPath"
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function New-RectangularArray {
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param(
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[Parameter(Mandatory = $true)][string]$Id,
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[Parameter(Mandatory = $true)][string]$Name,
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[Parameter(Mandatory = $true)][string]$Description,
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[Parameter(Mandatory = $true)][int]$Columns,
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[Parameter(Mandatory = $true)][int]$Rows,
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[Parameter(Mandatory = $true)][double]$Width,
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[Parameter(Mandatory = $true)][double]$Height
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)
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$microphones = [System.Collections.Generic.List[object]]::new()
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for ($row = 0; $row -lt $Rows; $row++) {
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for ($column = 0; $column -lt $Columns; $column++) {
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$index = $row * $Columns + $column
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$x = if ($Columns -eq 1) { 0 } else { -$Width / 2 + $column * $Width / ($Columns - 1) }
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$y = if ($Rows -eq 1) { 0 } else { -$Height / 2 + $row * $Height / ($Rows - 1) }
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$microphones.Add([ordered]@{
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id = 'mic-{0:D3}' -f ($index + 1)
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position = @([Math]::Round($x, 6), [Math]::Round($y, 6), 0)
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})
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}
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}
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return [ordered]@{
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schemaVersion = '1.0.0'
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kind = 'micarrsim.array'
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id = $Id
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name = $Name
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description = $Description
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units = 'm'
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coordinateSystem = New-CoordinateSystem
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aperture = [ordered]@{ width = $Width; height = $Height }
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microphones = $microphones
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}
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}
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function Write-ArrayFixture {
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param([Parameter(Mandatory = $true)]$Definition)
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$outputPath = Join-Path $projectRoot "assets/array-geometries/$($Definition.id).array.json"
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$json = $Definition | ConvertTo-Json -Depth 8
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[System.IO.File]::WriteAllText($outputPath, $json + [Environment]::NewLine, $utf8WithoutBom)
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Write-Host "Generated $($Definition.microphones.Count) microphones: $outputPath"
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}
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$rectangularFixtures = @(
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@{
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Id = 'rectangular-2x2-450mm'
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Name = '2x2 sparse rectangular'
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Description = '4-channel uniform rectangular layout on the 0.45 m reference aperture'
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Columns = 2
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Rows = 2
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Width = 0.45
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Height = 0.45
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},
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@{
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Id = 'rectangular-4x3-450mm'
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Name = '4x3 sparse rectangular'
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Description = '12-channel uniform rectangular layout on the 0.45 m reference aperture'
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Columns = 4
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Rows = 3
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Width = 0.45
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Height = 0.45
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},
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@{
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Id = 'rectangular-8x6-450mm'
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Name = '8x6 rectangular'
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Description = '48-channel uniform rectangular layout on the 0.45 m reference aperture'
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Columns = 8
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Rows = 6
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Width = 0.45
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Height = 0.45
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},
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@{
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Id = 'rectangular-16x12'
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Name = '16x12 rectangular baseline'
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Description = '192-channel uniform rectangular layout on a 0.45 m square aperture'
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Columns = 16
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Rows = 12
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Width = 0.45
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Height = 0.45
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},
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@{
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Id = 'rectangular-24x16-450mm'
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Name = '24x16 dense rectangular'
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Description = '384-channel uniform rectangular layout on the 0.45 m reference aperture'
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Columns = 24
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Rows = 16
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Width = 0.45
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Height = 0.45
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},
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@{
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Id = 'rectangular-16x12-compact'
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Name = '16x12 compact rectangular'
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Description = '192-channel uniform rectangular layout on a 0.12 m square aperture'
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Columns = 16
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Rows = 12
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Width = 0.12
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Height = 0.12
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},
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@{
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Id = 'rectangular-16x12-large'
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Name = '16x12 large rectangular'
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Description = '192-channel uniform rectangular layout on a 1.20 m square aperture for spatial-aliasing comparison'
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Columns = 16
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Rows = 12
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Width = 1.2
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Height = 1.2
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}
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)
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foreach ($fixture in $rectangularFixtures) {
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Write-ArrayFixture (New-RectangularArray @fixture)
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}
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$spiralOutputPath = Join-Path $projectRoot 'assets/array-geometries/fermat-spiral-192.array.json'
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$spiralMicrophones = [System.Collections.Generic.List[object]]::new()
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$microphoneCount = 192
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$radius = 0.225
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@@ -64,20 +150,9 @@ $spiralDefinition = [ordered]@{
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name = '192-channel Fermat spiral'
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description = 'Equal-area Fermat spiral on a 0.45 m circular aperture for comparison with the rectangular baseline'
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units = 'm'
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coordinateSystem = [ordered]@{
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handedness = 'right'
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xAxis = 'right'
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yAxis = 'up'
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zAxis = 'toward-scene'
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}
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coordinateSystem = New-CoordinateSystem
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aperture = [ordered]@{ width = 0.45; height = 0.45 }
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microphones = $spiralMicrophones
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}
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$spiralJson = $spiralDefinition | ConvertTo-Json -Depth 8
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[System.IO.File]::WriteAllText(
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$spiralOutputPath,
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$spiralJson + [Environment]::NewLine,
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[System.Text.UTF8Encoding]::new($false)
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)
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Write-Host "Generated $($spiralMicrophones.Count) microphones: $spiralOutputPath"
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Write-ArrayFixture $spiralDefinition
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