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Voice Processing (Ch. 11)

Voice Processing (Ch. 11). ENGR 475 – Telecommunications September 8, 2006 Jonathan White. What Voice Processing is. When you interact with an automated telephone system using your voice. 2 major applications: Directing calls (hated) Message manipulation (loved)

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Voice Processing (Ch. 11)

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  1. Voice Processing (Ch. 11) ENGR 475 – Telecommunications September 8, 2006 Jonathan White

  2. What Voice Processing is • When you interact with an automated telephone system using your voice. • 2 major applications: • Directing calls (hated) • Message manipulation (loved) • Voice processing has a long history – voice mail was actually invented in the 1970’s.

  3. Voice/Touch Tone Recognition • Most voice processing systems depend on touch tone input from callers. • An alternative is voice recognition. • Still very limited. • Systems can be trained to recognize many words from one user or a few words from many users. • Good for enrolling in classes. • Voice to text transformations. • Incredible improvements are being made in this field using sophisticated applications of math and DSP.

  4. Voice Dialing • You can train your cell phone to dial a number when you say something. • This logic is actually stored on your cell phone • Stored on a PBX in a shared environment.

  5. Automated Attendant/ Automated Distributor • Almost universally reviled. • You talk and interact with a machine. • Performs these functions: • Answers telephone. • Announces options. • Accepts touch tone/voice input. • Forwards calls to proper human. • Plays music while you are on hold. • http://www.databasesystemscorp.com/psautoattendant.htm • Skype / Asterisk do this already

  6. Voice Mail • Many uses • Features: • answer many phones at the same time • store incoming voice messages in personalized mailboxes associated with the user's phone number • enable users to forward received messages to another voice mailbox • send messages to one or more other user voice mailboxes • add a voice introduction to a forwarded message • store voice messages for future delivery • make calls to a telephone or paging service to notify the user a message has arrived in his/her mailbox • transfer callers to another phone number for personal assistance • play different message greetings to different callers. • Is this an excuse to never answer your phone again?

  7. Voice Mail Architecture • Voice mail is stored on a server • Typically connected to your PBX • On your cell phone, your voice mail is not stored on your phone. • Voice is compressed when it is stored.

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