Abstract
With advancement in technology, automation is paving the way for many manual methods in industry and daily life. Voice control and synthesis is a important part of automation. A Direct Digital Synthesis (DDS) is a technology for digital generation of human like speech. DDS can create any arbitrary waveforms using a single frequency clock source. The amplitude value of the waveform is stored in the memory. With DDS signals can be generated directly from the values stored in the memory. Different frequencies can be produced by using the sine, cosine look-up tables i.e. by varying the phase values. Machine voice is a fascinating field for application of DDS. IVRS (Interactive Voice Response System) is used in many fields of life. Currently the voice is generated by using analog means. The voice of a person is recorded for all possible phrases and replayed by computer control. The voice can be generated by digital means also especially customer care, announcements at public places, etc.
Keywords: New Economic World, Monetary.
[1] Radatz, J. , The IEEE Standard Dictionary of Electrical and Electronics Terms. New York, NY: IEEE Standards Office, (1997)
[2] Jouko Vankka, Paper : Methods of mapping from phase to sine amplitude in DDS ,IEEE Xplore.
[3] Design and Analysis of a Low Cost Wave Generator Based on Direct Digital Synthesis : Journal of Electrical and Computer Engineering, Volume 2015, Article ID 367302, 17 pages
[4] International OPEN ACCESS Journal Of Modern Engineering Research (IJMER) | IJMER | ISSN: 2249–6645 | www.ijmer.com | Vol. 4 | Iss. 5| May. 2014 | 9 | Implementation of Wide Band Frequency Synthesizer Base on DFS (Digital Frequency Synthesizer) Controller Using VHDL
[5] Harrington, Anthony. "History of a business revolution at the end of a phone". Scotland on Sunday
[6] Murphy, Eva and Colm Slattery. “All About Direct Digital Synthesis.” Ask The Applications Engineer-33. Analog Dialogue. Volume 38, No. 3, (2004): 8–12.
[7] J. Tierney, C. Rader, and B. Gold, A digital frequency synthesizer, IEEE Trans. Audio Electroacous, 19, 1, 48–57, Mar.1971
[8] A technical tutorial on digital signal synthesis, Analog Devices, Inc., Tech. Rep., 1999.
[9] Automation, LJ Welding. "Welding Manipulators | Subarc Welding & CMT Manipulators"
[10] Automation, LJ Welding. "Cross Slides”