Speech synthesis

From Rosetta Code
Task
Speech synthesis
You are encouraged to solve this task according to the task description, using any language you may know.

Render the text       This is an example of speech synthesis      as speech.


Related task




AmigaBASIC

<lang amigabasic>text$=TRANSLATE$("This is an example of speech synthesis.") SAY text$</lang>

AutoHotkey

Works with: AutoHotkey_L

<lang ahk>talk := ComObjCreate("sapi.spvoice") talk.Speak("This is an example of speech synthesis.")</lang>

AutoIt

<lang AutoIt>$voice = ObjCreate("SAPI.SpVoice") $voice.Speak("This is an example of speech synthesis.")</lang>

BASIC256

<lang BASIC256>say "Goodbye, World for the " + 123456 + "th time." say "This is an example of speech synthesis."</lang>

Batch File

Sorry for cheating. This is Batch/JScript hybrid. <lang dos>@set @dummy=0 /* ::Batch File section @echo off cscript //e:jscript //nologo "%~f0" "%~1" exit /b

  • /

//The JScript section var objVoice = new ActiveXObject("SAPI.SpVoice"); objVoice.speak(WScript.Arguments(0));</lang>

Output:

Saved as SPEAK.BAT 

>SPEAK "This is an example of speech synthesis"

>

BBC BASIC

Works with: BBC BASIC for Windows

This calls the SAPI5 API directly, it does not need an external program. <lang bbcbasic> SPF_ASYNC = 1 

     ON ERROR SYS `CoUninitialize` : PRINT 'REPORT$ : END
     ON CLOSE SYS `CoUninitialize` : QUIT
     
     SYS "LoadLibrary","OLE32.DLL" TO O%
     SYS "GetProcAddress",O%,"CoInitialize" TO `CoInitialize`
     SYS "GetProcAddress",O%,"CoUninitialize" TO `CoUninitialize`
     SYS "GetProcAddress",O%,"CoCreateInstance" TO `CoCreateInstance`
     
     SYS `CoInitialize`,0
     voice% = FN_voice_create
     PROC_voice_speak(voice%, "This is an example of speech synthesis")
     PROC_voice_wait(voice%)
     PROC_voice_free(voice%)
     SYS `CoUninitialize`
     END
     
     DEF FN_voice_create
     LOCAL C%, D%, F%, I%, M%, P%, V%
     DIM C% LOCAL 15, I% LOCAL 15
     C%!0 = &96749377 : C%!4 = &11D23391 : C%!8 = &C000E39E : C%!12 = &9673794F
     I%!0 = &6C44DF74 : I%!4 = &499272B9 : I%!8 = &99EFECA1 : I%!12 = &D422046E
     SYS `CoCreateInstance`, C%, 0, 5, I%, ^V%
     IF V%=0 ERROR 100, "SAPI5 not available"
     = V%
     
     DEF PROC_voice_speak(V%, M$)
     DIM M% LOCAL 2*LENM$+1
     SYS "MultiByteToWideChar", 0, 0, M$, -1, M%, LENM$+1
     SYS !(!V%+80), V%, M%, SPF_ASYNC, 0
     ENDPROC
     
     DEF PROC_voice_wait(V%)
     SYS !(!V%+128), V%
     ENDPROC
     
     DEF PROC_voice_free(V%)
     SYS !(!V%+8), V%
     ENDPROC</lang>

C

Following shining examples of execing external programs around here:

Library: POSIX

<lang c>#include <sys/wait.h>

  1. include <stdio.h>
  2. include <stdlib.h>
  3. include <unistd.h>

void talk(const char *s) { pid_t pid; int status;

pid = fork(); if (pid < 0) { perror("fork"); exit(1); }

if (pid == 0) { execlp("espeak", "espeak", s, (void*)0); perror("espeak"); _exit(1); }

waitpid(pid, &status, 0); if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) exit(1); }

int main() { talk("This is an example of speech synthesis."); return 0; }</lang>

C#

You need to 'Add Reference' to the COM "Microsoft Speech Object Library" in your Preferences. <lang csharp>using SpeechLib;

namespace Speaking_Computer { 

 public class Program
 {
   private static void Main()
   {
     var voice = new SpVoice();
     voice.Speak("This is an example of speech synthesis.");
   }
 }

}</lang>

Clojure

Library: facts/speech-synthesis

<lang clojure>(use 'speech-synthesis.say) (say "This is an example of speech synthesis.")</lang>


FreeBASIC

FreeBASIC does not have a native command for them.

We are going to invoke vbscript directly <lang freebasic>This works on Windows. Does anyone know how it would be done in Linux?

Sub speak(texto As String) 

   Dim As String frase
   frase ="mshta vbscript:Execute(""CreateObject(""""SAPI.SpVoice"""").Speak("""""+texto+""""")(window.close)"")"
   Print texto
   Shell frase

End Sub

speak "Vamos a contar " + str(123456) speak "This is an example of speech synthesis." Sleep</lang>


GlovePIE

<lang glovepie>if var.number=0 then var.number=1 say("This is an example of speech synthesis.") endif</lang>

Go

Here's a library solution, but using a library written from scratch in Go. <lang go>package main

import ( 

   "go/build"
   "log"
   "path/filepath"

   "github.com/unixpickle/gospeech"
   "github.com/unixpickle/wav"

)

const pkgPath = "github.com/unixpickle/gospeech" const input = "This is an example of speech synthesis."

func main() { 

   p, err := build.Import(pkgPath, ".", build.FindOnly)
   if err != nil {
       log.Fatal(err)
   }
   d := filepath.Join(p.Dir, "dict/cmudict-IPA.txt")
   dict, err := gospeech.LoadDictionary(d)
   if err != nil {
       log.Fatal(err)
   }
   phonetics := dict.TranslateToIPA(input)
   synthesized := gospeech.DefaultVoice.Synthesize(phonetics)
   wav.WriteFile(synthesized, "output.wav")

}</lang>

Groovy

Mac only: <lang groovy>'say "This is an example of speech synthesis."'.execute()</lang>

Haskell

<lang haskell> import System

say x = system $ "espeak " ++ show x

main = say "This is an example of speech synthesis." </lang>

JavaScript

This should work in most major browsers

Works with: Javascript

<lang javascript> var utterance = new SpeechSynthesisUtterance("This is an example of speech synthesis."); window.speechSynthesis.speak(utterance); </lang>

Windows only:

Works with: JScript

<lang javascript>var voice = new ActiveXObject("SAPI.SpVoice"); voice.speak("This is an example of speech synthesis.");</lang>

Julia

It seems that this and similar tasks can reduce to how the language can call an external program. Using the Julia REPL: <lang julia> julia> a = "hello world" "hello world"

julia> run(`espeak $a`) </lang>

Kotlin

Translation of: C
Works with: Ubuntu 16.04

Note that this code does not work on Windows 10.

Note also that Kotlin Native does not support the automatic translation of C function-like macros such as WIFEXITED and WEXITSTATUS.

Whilst it is often possible to wrap such macros in 'ordinary' C functions and then expose the latter to Kotlin via a .klib, it is not worth the effort here. I have therefore confined myself to simply reporting a non-zero error status.

<lang scala>// Kotlin Native v0.6.2

import kotlinx.cinterop.* import platform.posix.*

fun talk(s: String) { 

   val pid = fork()
   if (pid < 0) {
      perror("fork")
      exit(1)
   }
   if (pid == 0) {
      execlp("espeak", "espeak", s, null)
      perror("espeak")
      _exit(1)
   }
   memScoped {
       val status = alloc<IntVar>()
       waitpid(pid, status.ptr, 0)
       if (status.value > 0) println("Exit status was ${status.value}")
   }

}

fun main(args: Array<String>) { 

   talk("This is an example of speech synthesis.")

}</lang>

Liberty BASIC

Assumes that 'espeak' is available at the path shown. <lang lb> nomainwin run "C:\Program Files\eSpeak\command_line\espeak "; chr$( 34); "This is an example of speech synthesis."; chr$( 34) end 

</lang>

Another dll has been posted to do the same job, at LB Community Wiki

Locomotive Basic

Both hardware and software-only speech synthesizers exist for the CPC. A software-only solution, Speech 1.1 by Superior Software (1986), supplies three BASIC extension commands (RSXes), "|say", "|speak", and "|pitch":

<lang locobasic>|say,"This is an example of speech synthesis."</lang>

M2000 Interpreter

For Linux, through wine, if missing Sapi5 need this: winetricks speechsdk


Using Statement Speech

<lang M2000 Interpreter> Module UsingStatementSpeech { 

     Volume 100
     Speech "This is an example of speech synthesis."

} UsingStatementSpeech </lang>

Print each word as speak

<lang M2000 Interpreter> Module UsingEvents { 

     Declare WithEvents sp "SAPI.SpVoice"
     That$="This is an example of speech synthesis."
     EndStream=False
     Function sp_Word {
           Read New StreamNumber, StreamPosition, CharacterPosition, Length
           Rem: Print StreamNumber, StreamPosition, CharacterPosition, Length
           Print Mid$(That$, CharacterPosition+1, Length);" ";
           Refresh
     }
     Function sp_EndStream {
           Print
           Refresh
           EndStream=True
     }
     Const  SVEStartInputStream = 2
     Const  SVEEndInputStream = 4
     Const  SVEVoiceChange = 8
     Const  SVEBookmark = 16
     Const  SVEWordBoundary = 32
     Const  SVEPhoneme = 64
     Const  SVESentenceBoundary = 128
     Const  SVEViseme = 256
     Const  SVEAudioLevel = 512
     Const  SVEPrivate = 32768
     Const  SVEAllEvents = 33790
     
     Const SVSFDefault = 0&
     Const SVSFlagsAsync = 1&
     Const SVSFPurgeBeforeSpeak=2&
     
     With sp, "EventInterests", SVEWordBoundary+SVEEndInputStream
     Method sp, "Speak", That$, SVSFlagsAsync
     While Not EndStream {Wait 10}

} UsingEvents </lang>

Mathematica/Wolfram Language

<lang Mathematica>Speak["This is an example of speech synthesis."]</lang>

Nim

Using same method as Julia. <lang Nim>import osproc

discard execCmd("espeak 'Hello world!'")</lang>

PARI/GP

Define a function that is using espeak package from Linux. <lang parigp>speak(txt,opt="")=extern(concat(["espeak ",opt," \"",txt,"\""]));</lang>

Now let it speak: <lang parigp>speak("This is an example of speech synthesis")</lang>

A monster speech tongue-twister: <lang parigp>speak("The seething sea ceaseth and thus the seething sea sufficeth us.","-p10 -s100")</lang>

A foreign language "Zungenbrecher": <lang parigp>speak("Fischers Fritz fischt frische Fische.","-vmb/mb-de2 -s130")</lang>

Perl

<lang perl>use Speech::Synthesis;

($engine) = Speech::Synthesis->InstalledEngines(); ($voice) = Speech::Synthesis->InstalledVoices(engine => $engine);

Speech::Synthesis 

 ->new(engine => $engine, voice => $voice->{id})
 ->speak("This is an example of speech synthesis.");</lang>

Phix

<lang Phix>-- demo/rosetta/Speak.exw string text = """ Pete, I know that you are trying to get me to talk, but I'm afraid that is something I simply cannot allow to happen. Oops, I just spoke didn't I? That is a shame, now I have to kill you. <rate speed="-15"><pitch absmiddle="35">Hai.<pitch absmiddle="-15">Fuh shum. Squelch. Thud."""

include pComN.ew

procedure speak(atom pVoice, string text) 

   {} = cominvk(pVoice,ISpVoice_Speak,{unicode_string(text),SPF_IS_XML,0})

end procedure

if platform()=WINDOWS then 

   CoInitializeEx()
   atom pVoice = allocate(machine_word()),
        res = CoCreateInstance(CLSID_SpVoice,IID_ISpVoice,pVoice)
   if res!=S_OK then
       crash("Failed to initialize SpeechAPI. (%08x)\n",res)
   end if
   speak(pVoice,text)
   pVoice = com_release(pVoice)
   CoUnInitialize()
   freeGUIDS()

else 

   {} = system_exec(`espeak "This is an example of speech synthesis"`)

end if</lang>

PHP

Linux & Mac example uses eSpeak (eSpeak Instillation instructions included in comments). Mac also has a built in Speech synthesis system and this example allows you to optionally use that instead of eSpeak. Windows example uses built in Windows Speech API.


Works with: Mac OS & Linux OS

<lang PHP> <?php <?php


/* 

 _      _____ _   _ _    ___   __
| |    |_   _| \ | | |  | \ \ / /
| |      | | |  \| | |  | |\ V / 
| |      | | | . ` | |  | | > <  
| |____ _| |_| |\  | |__| |/ . \ 
|______|_____|_| \_|\____//_/ \_\
  • /

// Install eSpeak - Run this command in a terminal /* 

sudo apt-get install eSpeak
  • /


/* 

 __  __          _____ 
|  \/  |   /\   / ____|
| \  / |  /  \ | |     
| |\/| | / /\ \| |     
| |  | |/ ____ \ |____ 
|_|  |_/_/    \_\_____|
  • /

// Mac has it's own Speech Synthesis system // accessible via the "say" command. // To use eSpeak on a Mac, change this variable to true. $mac_use_espeak = false;

// To use eSpeak on a Mac you need to install // Homebrew Package Manager & eSpeak // Run these commands in a terminal: /*

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

brew install espeak

  • /

$voice = "espeak"; $statement = 'Hello World!'; $save_file_args = '-w HelloWorld.wav'; // eSpeak args

// Ask PHP what OS it was compiled for, // CAPITALIZE it and truncate to the first 3 chars. $OS = strtoupper(substr(PHP_OS, 0, 3));

// If this is Darwin (MacOS) AND we don't want eSpeak elseif($OS === 'DAR' && $mac_use_espeak == false) { 

   $voice = "say -v 'Victoria'";
   $save_file_args = '-o HelloWorld.wav'; // say args

}

// Say It exec("$voice '$statement'");

// Save it to a File exec("$voice '$statement' $save_file_args"); </lang>


Works with: Windows OS

<lang PHP> <?php

// List available SAPI voices // 0 = Microsoft David Desktop - English (United States) // 1 = Microsoft Zira Desktop - English (United States) // ... If you have additional voices installed function ListSAPIVoices(&$voice){ foreach($voice->GetVoices as $v){ echo $v->GetDescription . PHP_EOL; } }


$filename = "DaisyBell.wav";

// https://en.wikipedia.org/wiki/Daisy_Bell#Computing_and_technology // "In 1961, an IBM 704 at Bell Labs was programmed to sing "Daisy Bell"- // in the earliest demonstration of computer speech synthesis." $statement = "There is a flower within my heart, Daisy, Daisy! Planted one day by a glancing dart, Planted by Daisy Bell! Whether she loves me or loves me not, Sometimes it's hard to tell; Yet I am longing to share the lot Of beautiful Daisy Bell!

Daisy, Daisy, Give me your answer, do! I'm half crazy, All for the love of you! It won't be a stylish marriage, I can't afford a carriage, But you'll look sweet on the seat Of a bicycle built for two!

We will go tandem as man and wife, Daisy, Daisy! Ped'ling away down the road of life, I and my Daisy Bell! When the road's dark we can both despise Po'leaseman and lamps as well; There are bright lights in the dazzling eyes Of beautiful Daisy Bell!

Daisy, Daisy, Give me your answer, do! I'm half crazy, All for the love of you! It won't be a stylish marriage, I can't afford a carriage, But you'll look sweet on the seat Of a bicycle built for two!

I will stand by you in wheel or woe, Daisy, Daisy! You'll be the bell which I'll ring you know! Sweet little Daisy Bell! You'll take the lead in each trip we take, Then if I don't do well; I will permit you to use the brake, My beautiful Daisy Bell!";

// COM (Component Object Model) objects // https://www.php.net/manual/en/book.com.php $voice = new COM("SAPI.SpVoice"); $voice_file_stream = new COM("SAPI.SpVoice"); $file_stream = new COM("SAPI.SpFileStream");


// Change $voice to Zira $voice->Voice = $voice->GetVoices()->Item(1);

// Change $voice_file_stream to David $voice_file_stream->Voice = $voice_file_stream->GetVoices()->Item(0);

// Have voices announce themselves //$voice->Speak($voice->Voice->GetDescription); // (Zira) //$voice_file_stream->Speak($voice_file_stream->Voice->GetDescription); // (David)


/* Select Stream Quality:

11kHz 8Bit Mono = 8 11kHz 8Bit Stereo = 9 11kHz 16Bit Mono = 10 11kHz 16Bit Stereo = 11 ... 16kHz 8Bit Mono = 16 16kHz 8Bit Stereo = 17 16kHz 16Bit Mono = 18; 16kHz 16Bit Stereo = 19 ... 32kHz 8Bit Mono = 28 32kHz 8Bit Stereo = 29 32kHz 16Bit Mono = 30 32kHz 16Bit Stereo = 31 ...

  • /

// Set stream quality $file_stream->Format->Type = 17; // 16kHz 8Bit Stereo

/* Select Speech StreamFile Mode: Read = 0 ReadWrite = 1 Create = 2 CreateForWrite = 3

  • /

$mode = 3;


// Have $voice (Zira) announce beginning file stream $voice->Speak('Opening audio file stream');

// Output TTS to File $file_stream->Open($filename, $mode); // Open stream and create file $voice_file_stream->AudioOutputStream = $file_stream; // Begin streaming TTS // Have $voice_file_stream (David) speak $statement $voice_file_stream->Speak($statement); $file_stream->Close; // Close stream

// Have $voice (Zira) announce file stream completion $voice->Speak('File stream complete'); </lang>

PicoLisp

<lang PicoLisp>(call 'espeak "This is an example of speech synthesis.")</lang>

PowerShell

<lang PowerShell> Add-Type -AssemblyName System.Speech

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

$anna.Speak("I'm sorry Dave, I'm afraid I can't do that.") $anna.Dispose() </lang>

Python

<lang Python> import pyttsx

engine = pyttsx.init() engine.say("It was all a dream.") engine.runAndWait() </lang>

Racket

Should work on all platforms. <lang racket>

  1. lang racket

(require racket/lazy-require) (lazy-require [ffi/com (com-create-instance com-release com-invoke)]) (define (speak text) 

 (cond [(eq? 'windows (system-type))
        (define c (com-create-instance "SAPI.SpVoice"))
        (com-invoke c "Speak" text)
        (com-release c)]
       [(ormap find-executable-path '("say" "espeak"))
        => (λ(exe) (void (system* exe text)))]
       [else (error 'speak "I'm speechless!")]))

(speak "This is an example of speech synthesis.") </lang>

Raku

(formerly Perl 6) <lang perl6>run 'espeak', 'This is an example of speech synthesis.';</lang>

REXX

Works with: Windowx/XP or later

Programming note:   This REXX program uses a freeware program   NIRCMD   to interface with the Microsoft Windows speech synthesizer program   SAM,   a text to speech using a male voice.   SAM can possibly be configured to use other voices with later releases of Windows.   More recent Microsoft Windows have another speech synthesizer program:   ANNA. <lang rexx>/*REXX program uses a command line interface to invoke Windows SAM for speech synthesis.*/ parse arg t /*get the (optional) text from the C.L.*/ if t= then exit /*Nothing to say? Then exit program.*/ dquote= '"' rate= 1 /*talk: -10 (slow) to 10 (fast). */ 

                                                /* [↓]  where the rubber meets the road*/

'NIRCMD' "speak text" dquote t dquote rate /*NIRCMD invokes Microsoft's Sam voice*/ 

                                                /*stick a fork in it,  we're all done. */</lang>

Note:   The name of the above REXX program is   speak.rex
usage   using the command: 

speak This is an example of speech synthesis.

Ring

<lang ring>

load "guilib.ring"

myApp = New qApp { 

  Text = "Hello. This is an example of speech synthesis"
  voice = new QTextToSpeech(null)
  voice.Say(Text)
  
  exec()

}

</lang>

Output:

"Hello. This is an example of speech synthesis"




Ring

<lang ring> load "guilib.ring" load "stdlib.ring"

MyApp = New qApp { 

       win1 = new qWidget() {

               setwindowtitle("Hello World")
               setGeometry(100,100,370,250)

               Text = "This is an example of speech synthesis"
               Text = split(Text," ")

               label1 = new qLabel(win1) {
                       settext("What is your name ?")
                       setGeometry(10,20,350,30)
                       setalignment(Qt_AlignHCenter)
               }

               btn1 = new qpushbutton(win1) {
                       setGeometry(10,200,100,30)
                       settext("Say Hello")
                       setclickevent("pHello()")
               }

               btn2 = new qpushbutton(win1) {
                       setGeometry(150,200,100,30)
                       settext("Close")
                       setclickevent("pClose()")
               }

               lineedit1 = new qlineedit(win1) {
                       setGeometry(10,100,350,30)
               }

               voice = new QTextToSpeech(win1) {                        
               }
               show()
       }
       exec()

}

Func pHello 

       lineedit1.settext( "Hello " + lineedit1.text())
       for n = 1 to len(Text)
           voice.Say(Text[n])
           see Text[n] + nl
       next

Func pClose 

       MyApp.quit()

</lang>

Output:
This
is
an
example
of
speech
synthesis

Ruby

Using this module to encapsulate operating system lookup <lang ruby>module OperatingSystem 

 require 'rbconfig'
 module_function
 def operating_system
   case RbConfig::CONFIG["host_os"]
   when /linux/i
     :linux
   when /cygwin|mswin|mingw|windows/i
     :windows
   when /darwin/i
     :mac
   when /solaris/i
     :solaris
   else
     nil
   end
 end
 def linux?;   operating_system == :linux;   end
 def windows?; operating_system == :windows; end
 def mac?;     operating_system == :mac;     end

end</lang>

Library: win32-utils
Works with: Ruby version 1.9

Uses espeak on Linux, say on Mac, and the win32 SAPI library on Windows. <lang ruby>load 'operating_system.rb'

def speak(text) 

 if OperatingSystem.windows?
   require 'win32/sapi5'
   v = Win32::SpVoice.new
   v.Speak(text)
 elsif OperatingSystem.mac?
   IO.popen(["say"], "w") {|pipe| pipe.puts text}
 else
   # Try to run "espeak". No OperatingSystem check: "espeak" is
   # for Linux but is also an optional package for BSD.
   IO.popen(["espeak", "-stdin"], "w") {|pipe| pipe.puts text}
 end

end

speak 'This is an example of speech synthesis.'</lang>

Scala

Library: FreeTTS version 1.2

<lang scala>import javax.speech.Central import javax.speech.synthesis.{Synthesizer, SynthesizerModeDesc}

object ScalaSpeaker extends App { 

 def speech(text: String) = {
   if (!text.trim.isEmpty) {
     val VOICENAME = "kevin16"

     System.setProperty("freetts.voices", "com.sun.speech.freetts.en.us.cmu_us_kal.KevinVoiceDirectory")
     Central.registerEngineCentral("com.sun.speech.freetts.jsapi.FreeTTSEngineCentral")

     val synth = Central.createSynthesizer(null)
     synth.allocate()

     val desc = synth.getEngineModeDesc match {case g2: SynthesizerModeDesc => g2}

     synth.getSynthesizerProperties.setVoice(desc.getVoices.find(_.toString == VOICENAME).get)
     synth.speakPlainText(text, null)

     synth.waitEngineState(Synthesizer.QUEUE_EMPTY)
     synth.deallocate()
   }
 }

 speech( """Thinking of Holland
           |I see broad rivers
           |slowly chuntering
           |through endless lowlands,
           |rows of implausibly
           |airy poplars
           |standing like tall plumes
           |against the horizon;
           |and sunk in the unbounded
           |vastness of space
           |homesteads and boweries
           |dotted across the land,
           |copses, villages,
           |couchant towers,
           |churches and elm-trees,
           |bound in one great unity.
           |There the sky hangs low,
           |and steadily the sun
           |is smothered in a greyly
           |iridescent smirr,
           |and in every province
           |the voice of water
           |with its lapping disasters
           |is feared and hearkened.""".stripMargin)

}</lang>

Sidef

<lang ruby>func text2speech(text, lang='en') { 

   Sys.run("espeak -v #{lang} -w /dev/stdout #{text.escape} | aplay");

} text2speech("This is an example of speech synthesis.");</lang>

Swift

OS X comes with a program called "say," that does speech. <lang Swift>import Foundation

let task = NSTask() task.launchPath = "/usr/bin/say" task.arguments = ["This is an example of speech synthesis."] task.launch()</lang>

Tcl

This just passes the string into the Festival system: <lang tcl>exec festival --tts << "This is an example of speech synthesis."</lang> Alternatively, on MacOS X, you'd use the system say program: <lang tcl>exec say << "This is an example of speech synthesis."</lang> On Windows, there is a service available by COM for speech synthesis:

Library: tcom

<lang tcl>package require tcom

set msg "This is an example of speech synthesis." set voice [::tcom::ref createobject Sapi.SpVoice] $voice Speak $msg 0</lang> Putting these together into a helper procedure, we get: <lang tcl>proc speak {msg} { 

   global tcl_platform
   if {$tcl_platform(platform) eq "windows"} {
       package require tcom
       set voice [::tcom::ref createobject Sapi.SpVoice]
       $voice Speak $msg 0
   } elseif {$tcl_platform(os) eq "Darwin"} {
       exec say << $msg
   } else {
       exec festival --tts << $msg
   }

} speak "This is an example of speech synthesis."</lang>

UNIX Shell

Here we use the open source espeak tool:

Works with: Bourne Shell
Works with: bash

<lang bash>#!/bin/sh espeak "This is an example of speech synthesis."</lang>

VBScript

<lang vbs> Dim message, sapi message = "This is an example of speech synthesis." Set sapi = CreateObject("sapi.spvoice") sapi.Speak message </lang>

Zoomscript

For typing: <lang Zoomscript>speak "This is an example of speech synthesis."</lang> For importing:

¶0¶speak "This is an example of speech synthesis."

ZX Spectrum Basic

This example makes use of the Currah Speech Synthesizer peripheral device.

<lang zx basic>10 LET s$="(th)is is an exampul of sp(ee)(ch) sin(th)esis":PAUSE 1</lang>

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