Out-TextToSpeech.ps1

# A function which takes a string as input and converts it to speech
# Requires the System.Speech assembly
# Possible voices are: 
#	 - Microsoft David Desktop
#	 - Microsoft Zira Desktop
# For list of installed voices, run the following:
# Get-ChildItem -Path "HKLM:\SOFTWARE\Microsoft\Speech\Voices\Tokens\*" | Get-ItemProperty | Select -ExpandProperty "(default)"

Param(
	[Parameter(Mandatory = $True, Position = 0, ValueFromPipeline = $True)]
	[string]$Text
	, [Parameter(Mandatory = $False, Position = 1, ValueFromPipeline = $False)]
	[string]$Voice = "Zira"
	, [Parameter(Mandatory = $False, Position = 2, ValueFromPipeline = $False)]
	[int]$Rate = 2
	, [Parameter(Mandatory = $False, Position = 3, ValueFromPipeline = $False)]
	[int]$Volume = 100
)
Add-Type -AssemblyName System.Speech
$speechSynthesizer = New-Object System.Speech.Synthesis.SpeechSynthesizer
$speechSynthesizer.SelectVoice("Microsoft $Voice Desktop")
$speechSynthesizer.Rate = $Rate
$speechSynthesizer.Volume = $Volume
$speechSynthesizer.Speak($Text)