TRI Conference Report, 1. izdevumsTransportation Research Institute, Carnegie-Mellon University, 1968 |
No grāmatas satura
1.–3. rezultāts no 22.
177. lappuse
... frequency analyzer with eight octavewide bands , each depicted on a graph , in which sound is plotted in terms of decibels and frequency . Perceived noise decibels ( PNdB ) may be derived from octave band levels . Examples of octave ...
... frequency analyzer with eight octavewide bands , each depicted on a graph , in which sound is plotted in terms of decibels and frequency . Perceived noise decibels ( PNdB ) may be derived from octave band levels . Examples of octave ...
179. lappuse
Carnegie Mellon University. Transportation Research Institute. Frequency Hertz 100 200 500 1,000 2,000 3,000 4,000 5,000 6,000 8,000 10,000 60 Phon 71 70 Phon 65 ... frequency energy . Sound - pressure Level db re 0.0002 Microbar 80 Sound ...
Carnegie Mellon University. Transportation Research Institute. Frequency Hertz 100 200 500 1,000 2,000 3,000 4,000 5,000 6,000 8,000 10,000 60 Phon 71 70 Phon 65 ... frequency energy . Sound - pressure Level db re 0.0002 Microbar 80 Sound ...
180. lappuse
... Frequency Hertz Ride Index Value 2 2.25 2.5 2.75 3. Fig . 5-31 Suggested Vehicle Interior Noise Criterion Curves 100 90 NCA Curves ( Use only as maxi- mum ... Frequency Band Hz a ) 100 · 10,000 Frequency Hertz Wall Absorption Coefficient 180.
... Frequency Hertz Ride Index Value 2 2.25 2.5 2.75 3. Fig . 5-31 Suggested Vehicle Interior Noise Criterion Curves 100 90 NCA Curves ( Use only as maxi- mum ... Frequency Band Hz a ) 100 · 10,000 Frequency Hertz Wall Absorption Coefficient 180.
Saturs
Introduction | 1 |
Vehicle Design | 9 |
Guideway Superstructure | 31 |
Autortiesības | |
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acceleration acoustic adhesion aerial Alweg angular seating at-grade Automatic Train Control Automatic Train Operation axle base beam Bearing Capacity braking column concept concrete construction decibels deflection distributor system doors economical Electric electronic guidance equation equipment escalator evaluation factor feet foundation frequency geometrically flexible guideway inches limited tramway linear motor load loop maximum Metro moment of inertia Monorail Montreal Metro motor motorman noise control noise level parameters passenger comfort phons platform pneumatic propulsion rail rapid transit rapid transit systems regional lines resistance ride roadway rock bolts rubber tires running Safege safety shown in Fig signal simulation slope sound pressure level span length speed standees station steel wheels stringers superelevation supporting structure surface switches Table TALGO tion track circuits train control transfer point Transit Expressway transit vehicle transportation truck tunnel Typical unit urban transit vehicle design velocity vertical vibration weight width