BKL MAIN PAGE Fast-Find Index by ApplicationDesign ServicesWorking with a ConsultantAcoustical Measurements to Recognized StandardsBroadcast and Recording Studio AcousticsProject Studio FAQChurch and House of Worship AcousticsHouses of Worship Acoustical Experienceexcess reverberation timeConvention and Meeting FacilitiesHotel and Convention Centre ExperienceElementary, Junior and Senior SchoolsMusic Schools and Band RoomsDisability Access for Hearing Impaired PersonsSchool Acoustical ExperienceEnvironmental Noise Impact StudiesNoise: Annoyance and Zoning RegulationsEnvironmental Assessment ExperienceHome Theatre and Listening Room DesignIndustrial Noise ControlIndustrial Noise ExperienceMarine and Shipboard Noise ControlMarine Acoustics ExperienceFull Marine BrochureMechanical Noise and Vibration ControlMusic and Drama Theatre Acousticsreverberation timeuseful reflectionsDrama FacilitiesMusic FacilitiesTimms Centre for the Performing ArtsThe Muttart Recital HallMaple Ridge BandstandPerformance Facilities Acooustical ExperienceMusic Schools and Band RoomsPost-Secondary Education FacilitiesHebb Physics TheatreNait - South Learning CentreSFU - West Mall ComplexResidential and Multi-Family Dwelling Noise ControlAcousticla Do's & Don'ts for the New Home Buyer (Before you make the offer)Multi-Family Residences Acosutical Experience SheetSports and Recreation Facility AcousticsReverberation TimeGeneral Motors Place ArenaSports Arena ExperienceTraining, Teaching and SeminarsProject ListTimms Centre for the Arts, University of Alberta - Edmonton, ABAlberta College Muttart Hall - Edmonton, ABSqueeky ShoesGeneral Motors Place ArenaHebb Physics Theatre, University of British Columbia - Vancouver, BCPort Moody Civic Centre Council Chamber/Theatre - Port Moody, BCNorthern Alberta Institute of Technology - Edmonton, ABGeneral Motors Place Arena - Vancouver, BCEvangelical Chinese Bible Church - Burnaby, BCSimon Fraser University West Mall Complex - Burnaby, BCMaple Ridge Bandstand - Maple Ridge, BCSt. Mary's Parish Church - Vancouver, BCGood Shepherd/Star of the Sea Church - Surrey, BCYukon Place Arts Centre - Whitehorse, YTLateral ReflectionsUniversity of Northern British Columbia Campus - Prince George, BCAbbotsford Civic Centre - Abbotsford, BCManitoba Lotteries Casinos - Winnipeg, MBNATO Low Level Flight EIS - Goose Bay, NFGVRD Royal Avenue Sewage Pumping Station - New Westminster, BCCN Rail Double-Tracking Vibration Study - Kamloops, BCDepartment of National Defence - Torpedo and Ship Ranging VesselsPROJECT EXPERIENCE DATASHEETSArchitectural Acoustical Experience Data SheetHealth Care Facilities Acoustical Experience Data SheetHotel and Convention Centre Acoustical Experience Data SheetHouses of Worship Acoustical Experience Data SheetLibrary Acoustical Experience Data SheetMulti-Family Residences Acoustical Experience Data SheetPerformance Facilities Acoustical Experience Data SheetRenovation Projects Acoustical Experience Data SheetResearch Facilities Acoustical Experience Data SheetSchool Acoustical Experience Data SheetSports Arena Acoustical Experience Data SheetSwimming Pool Acoustical Experience Data SheetUniversity and College Facilities Acoustical Experience Data SheetEnvironmental Assessment Acoustical Experience Data SheetTransportation Noise Assessment Experience Data SheetAirport Acoustical Experience Data SheetSkyTrain Acoustical Experience Data SheetRoad Traffic Noise Experience Data SheetTruck Noise Assessment Experience Data SheetConstruction Noise Experience Data SheetMining Noise Assessment Experience Data SheetIndustrial Noise Experience Data SheetWater and Sewage Treatment Plant Noise Experience Data SheetMarine BrochureMarine Acoustics Experience Data SheetRail Noise and Vibration Impact Experience Data SheetDesign Staff - Short Form ResumesDouglas Kennedy Detailed C.V.Douglas Whicker Detailed C.V.Ping Chen Detailed C.V.Tiberiu Spulber Detailed C.V.Mark A. Bliss Detailed C.V.BKL BulletinsUse of Resilient Channel in Floor Assemblies with Two Layers of Gypsum WallboardImportant Notes on Flooring in Multi-Family Dwellings - 2002Do's and Don'ts for the Noise Sensitive Home Buyer (Before You Make the Offer) - 1998Noise: Annoyance and Zoning Regulations September 19961995 Edition Canadian Building Code - Errors in acoustical details.-February 7/96Shear bracing in wood frame construction and its effect on sound isolation. -1994Common Acoustical Problems and 3D Audio DemosExcess Reverberation Time ("the room sounds kind of echoey")early reflectionsDry speech sample, no reverb( .wav file 108kB)( .au file 55kB)( Real Audio 3.0B file 25kB)Speech 0.8 sec reverb time( .wav file 260kB)( .au file 130kB)( Real Audio 3.0B file 30kB)Speech 1.5 sec reverb time( .wav file 284kB)( .au file 142kB)( Real Audio 3.0B file 33kB)Speech 2.5 sec reverb time( .wav file 395kB)( .au file 197kB)( Real Audio 3.0B file 45kB)Speech 5.0 sec reverb time( .wav file 520kB)( .au file 310kB)( Real Audio 3.0B file 71kB)Speech-boomy room with a 3.0 second LF reverb time( .wav file 278kB)( .au file 138kB)( Real Audio 3.0B file 32kB)Late Reflections, or Slap Echoes ("it really does sound echoey")delayed signals ( .au file 140kB ) / ( Real Audio 3.0B file 30kB )several loudspeakers ( .au file 121kB ) / ( Real Audio 3.0B file 28kB )late reflection example ( .au file 59kB ) / ( Real Audio 3.0B file 30kB ) Full range speech sample ( .au file 55kB ) / ( Real Audio 3.0B file 24kB )Loss of consonants in speech over a telephone ( .au file 54kB )Speech with high loss of consonants ( .au file 110kB ) / ( Real Audio 3.0B file 25kB )Contact InformationHow to get to our officeOur Favorite Links