Acoustics Basics app for iPhone and iPad

Acoustics Basics is ideal for sound engineers, media professionals and audiophiles. The app includes a variety of tables, equations, tips and notes.

Also, includes a list of acceptable noise/sound levels for indoors and outdoors for a variety of building structures and environments.

Table of Contents:

- Abatement and Distance from Source
- Acceptable Noise - dBA - Levels
- Adding Decibels
- Blade Dampers and Noise Generation
- Blade Pass Frequency - BPF
- Classification of Noise Reduction Silencers
- Comparing Noise Criteria
- Daily Noise Dose Level
- Decibel
- Decibel A, B and C
- Directivity Coefficient and Sound Attenuation
- Ducts - Noise Generation
- EPA Protective Noise Levels
- Fans and Noise Power Generation
- Floor Vibration
- Frequency Limits for Octave Bands
- Ldn - Day and Night Sound Level
- Leq - Equivalent Sound Level
- Ls - Sound Exposure Level
- Machines - Sound Level Reduction
- Maximum A-Weighted Sound Levels Allowed
- NC - Noise Criterion
- Noise Exposure - Permissible Level and Duration
- Outdoor Ambient Sound Levels
- PNC - Preferred Noise Criterion
- Propagation of Sound Indoors
- Propagation of Sound Outdoors
- RC - Room Criteria
- REL - Noise Recommended Exposure Limit
- Reverberation Time
- Room Absorption Characteristics
- Sound Absorption Coefficients
- Sound Attenuation
- Sound Attenuation due to End Reflection
- Sound Attenuation in Duct Elbows
- Sound Attenuation in Unlined Sheet-Metal Ducts
- Sound Frequency, Wavelength and Octave
- Sound Intensity
- Sound Power
- Sound Power, Intensity and Pressure
- Sound Pressure
- Sound Pressure - Recommended Maximum Levels in Rooms
- Sound Transmission Through Massive Walls or Floors
- Sound Transmission through Duct Walls
- Speed of Sound
- Speed of Sound in some materials
- Speed of Sound in Gases
- Speed of Sound in some common Liquids
- Speed of Sound in some common Solids
- Subjective Effect of Change in Sound Pressure Level
- Telephones in Noisy Areas
- Voice Level and Distance


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