 Microsoft has also included a new high quality voice capture DirectX Media Object (DMO) as part of DirectShow that allows voice capture applications such as instant messengers and speech recognition applications to apply Acoustic Echo Cancellation and microphone array processing to speech signals.Windows Vista is the first Windows operating system to include fully integrated support for speech recognition.Under Windows 2000 and XP, Speech Recognition was installed with Office 2003, or was included in Windows XP Tablet PC Edition.