param(

[Parameter(Mandatory=$true)][string]$Text,

[Parameter(Mandatory=$true)][string]$OutputPath,

[string]$Voice = "",

[int]$Rate = -1,

[int]$Volume = 100

)

Set-StrictMode -Version Latest

$ErrorActionPreference = 'Stop'

Add-Type -AssemblyName System.Speech

$synth = New-Object System.Speech.Synthesis.SpeechSynthesizer

if ($Voice -ne "") {

try {

$synth.SelectVoice($Voice)

} catch {

Write-Warning "Voice '$Voice' not found, using system default."

}

}

$synth.Rate = [Math]::Max(-10, [Math]::Min(10, $Rate))

$synth.Volume = [Math]::Max(0, [Math]::Min(100, $Volume))

$dir = Split-Path -Parent $OutputPath

if ($dir -and -not (Test-Path $dir)) {

New-Item -ItemType Directory -Path $dir -Force | Out-Null

}

# Save to WAV file

$synth.SetOutputToWaveFile($OutputPath)

$synth.Speak($Text)

# Play through speakers so narration is heard live during the test run

$synth.SetOutputToDefaultAudioDevice()

$synth.Speak($Text)

$synth.Dispose()

Write-Host "Audio saved: $OutputPath"

exit 0