Monster Speech for Delphi 4 uses TTS and speech API for produce speech and sound files.
File list:
demo
...\chat
...\....\chat.dpr
...\....\chat.res
...\....\main.dfm
...\....\main.pas
...\destfile
...\........\choose.dfm
...\........\choose.pas
...\........\destfile.dpr
...\........\destfile.res
...\........\tts.dfm
...\........\tts.pas
...\general
...\.......\demo.dpr
...\.......\demo.res
...\.......\main.dfm
...\.......\main.pas
doc
..\mspeech.chm
src
..\mRecon.pas
..\mspec.dpk
..\mspec.res
..\mspecd4.dpk
..\mspecd4.res
..\mspecreg.pas
..\mspeech.msg
..\mSpeech.pas
..\Speech.pas