Tech

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SAMBIT MOHAPATRA EE200118142

DOLBY SYSTEMS Vs DTS 6

[1]

“DOLBY Systems Vs DTS 6”

Under the guidance of :

Mr. R K Dash

Tech

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SAMBIT MOHAPATRA EE200118142

DOLBY SYSTEMS Vs DTS 6

[2]

INTRODUCTION

Three competing multi-channel digital audio formats :

• Dolby Digital.

• DTS Digital Sound.

• SDDS.

Tech

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SAMBIT MOHAPATRA EE200118142

DOLBY SYSTEMS Vs DTS 6

[3]

HISTORICAL OVERVIEW DTS Digital Sound

• Developed by Terry Beard along with Jim Ketcham in mid- 1980s.

• Guided by two convictions :

• Digital sound was for all theatres.

• Easier, less expensive, more reliable, more flexible, and higher in quality delivering of audio data.

Dolby Digital

• Creators: Dolby Laboratories in 1987.

• Used more flexible 'adaptive' coding system called AC-3.

Tech

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SAMBIT MOHAPATRA EE200118142

DOLBY SYSTEMS Vs DTS 6

[4]

WORKING & TECHNICAL ASPECTS

DTS Digital Sound

Six digital audio channels.

Recorded on to a CD-ROM along with time-code track.

Miniature reader empowered by main electronic package mounted on the projector.

Code from reader is fed to the DTS processor.

Dolby Digital Three front channels and a surround-sound channel.

Uses an advanced noise-reduction process.

Tech

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SAMBIT MOHAPATRA EE200118142

DOLBY SYSTEMS Vs DTS 6

[5]

WORKING & TECHNICAL ASPECTS Contd.

Simplified block diagram of a Dolby Stereo encoder

Tech

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SAMBIT MOHAPATRA EE200118142

DOLBY SYSTEMS Vs DTS 6

[6]

WORKING & TECHNICAL ASPECTS Contd.

Block diagram of Dolby Matrix decoder

Tech

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SAMBIT MOHAPATRA EE200118142

DOLBY SYSTEMS Vs DTS 6

[7]

Dolby Digital Vs DTS: Which is Better? DTS Digital Sound

• Offers higher than CD-resolution audio within the Bandwidth.

• Soundtrack present on separate CD.

• Operates at a rate of 1536 kb/s.

Dolby Digital

• Reduces Bandwidth to reproduce multi channel audio.

• Places its digital soundtrack as optical marking.

• Depends on design of codec.

Tech

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Pre

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SAMBIT MOHAPATRA EE200118142

DOLBY SYSTEMS Vs DTS 6

[8]

CONCLUSION

• The DTS tracks plays louder than Dolby Digital ones.

• Minor technical differences between both the systems.

• Major difference in cost.

Tech

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SAMBIT MOHAPATRA EE200118142

DOLBY SYSTEMS Vs DTS 6

[9]

THANK YOU !

Nati

onal In

stit

ute

of

Sci

en

ce &

Tech

nolo

gy

Susanta Kumar Sahu

RDBMS

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