1. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS SPEECH PRIVACY:  SPEECH PRIVACY DEPENDS ON THE SIGNAL-TO-NOISE RATIO BETWEEN INTRUDING SPEECH LEVEL (SIGNAL) AND THE STEADY BACKGROUND SOUND (NOISE).  THE INTRUDING SPEECH LEVEL IS LARGELY DETERMINED BY THE VOICE EFFORT OF THE SPEAKER (HOW LOUD) AND THE NOISE REDUCTION BETWEEN ENCLOSED ROOMS, OR BETWEEN WORKSTATION IN AN OPEN PLAN.

2. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS DEGREE OF PRIVACY

3. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS FACTORS AFFECTING SPEECH PRIVACY

4. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS  STC RATINGS  OPEN PLENUMS  ROOM ABSORPTION  AREA OF PARTITION  ACOUSTICAL ZONING OPEN PLANS SPEECH PRIVACY IN ENCLOSED ROOMS

5. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS  STC RATINGS  OPEN PLENUMS  ROOM ABSORPTION  AREA OF PARTITION  ACOUSTICAL ZONING OPEN PLANS OPEN PLENUMS

6. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS  STC RATINGS  OPEN PLENUMS  ROOM ABSORPTION  AREA OF PARTITION  ACOUSTICAL ZONING OPEN PLANS SOUND ABSORPTION IN THE RECEIVING ROOM

7. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS  STC RATINGS  OPEN PLENUMS  ROOM ABSORPTION  AREA OF PARTITION  ACOUSTICAL ZONING OPEN PLANS AREA OF THE PARTITION BETWEEN THE TWO ROOMS

8. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS  STC RATINGS  OPEN PLENUMS  ROOM ABSORPTION  AREA OF PARTITION  ACOUSTICAL ZONING OPEN PLANS ACOUSTICAL ZONING

9. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS  STC RATINGS  OPEN PLENUMS  ROOM ABSORPTION  AREA OF PARTITION  ACOUSTICAL ZONING OPEN PLANS ACOUSTICAL ZONING

10. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING SPEECH PRIVACY IN OPEN PLANS

11. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING SCREENS

12. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING SCREENS DESIGN CRITERIA FOR ACOUSTICAL SCREENS:  NRC > 0.80 & STC = 25.  SCREENS LESS THAN 4 FEET ARE NORMALLY NOT EFFECTIVE BARRIERS.  2 X WIDER THAN IT IS TALL

13. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING CEILING TREATMENT

14. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING CEILING TREATMENT

15. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING CEILING TREATMENT

16. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING WALL TREATMENT WALLS:  SOUND- ABSORBING WALL PANELS EXTENDING FROM 2’ TO 6’ ABOVE THE FLOOR.

17. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING WINDOW TREATMENT WINDOW TREATMENT:  THICK, SOUND- ABSORBING CURTAINS (GREATER THAN 8 OZ./YD 2.  WIDE SLAT, PERFORATED VERTICAL BLINDS (GREATER THAN 3” WIDE) WITH SOUND ABSORBING CORES.

18. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING WINDOW TREATMENT

19. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING WINDOW TREATMENT

20. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING WORKSTATION LAYOUT

21. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING WORKSTATION LAYOUT

22. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING WORKSTATION LAYOUT

23. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING WORKSTATION LAYOUT

24. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING SOUND MASKING

25. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING SOUND MASKING

26. SPEECH PRIVACY INTRODUCTION ACOUSTICAL DEMANDS ENCLOSED ROOMS OPEN PLANS  SCREENS  SOUND ABSORBING FINISHES  WORKSTATION LAYOUT  SOUND MASKING SOUND MASKING