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  2. Street performing (U.S. case law) - Wikipedia

    en.wikipedia.org/wiki/Street_performing_(U.S...

    Street performing cannot be prohibited in an area where other forms of free speech are not prohibited. For example, if street performing is regulated or banned but people are allowed to conduct free speech behavior for pickets, protests, religious, political, educational, sports, commercial or other purposes, then the law is illegal.

  3. Performing rights - Wikipedia

    en.wikipedia.org/wiki/Performing_rights

    Public Place Clause This approach is based on the intuitive meaning of the word 'public'. Under §101, is performance is public when it is made to a gathering of a substantial number of people who are outside the performer's circle of family and friends. [3] So, a restaurant playing a song on its radio, which can be heard by the patrons eating ...

  4. Muffler - Wikipedia

    en.wikipedia.org/wiki/Muffler

    Silencer (silver) and exhaust pipe on a Ducati motorcycle A silencer cut open to show the insulation, chambers and piping inside the shell. A muffler (North American and Australian English) [1] or silencer (British English) is a device for reducing the noise emitted by the exhaust of an internal combustion engine—especially a noise-deadening device forming part of the exhaust system of an ...

  5. List of smoking bans in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_smoking_bans_in...

    Anyone caught smoking in public areas will faces a fine of up to $500. The city previously outlawed smoking in parks, and also requires businesses that sell tobacco products to obtain a city license. [40] El Cerrito, January 1, 2015, banned in all public places, commercial areas, and multi-unit residences and within 25 feet of any of these. [41]

  6. Sound attenuator - Wikipedia

    en.wikipedia.org/wiki/Sound_attenuator

    A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces.

  7. Exhaust system - Wikipedia

    en.wikipedia.org/wiki/Exhaust_system

    Exhaust system of the Opel Corsa B 1.2 petrol Exhaust manifold (chrome plated) on a car engine. An exhaust system is used to guide reaction exhaust gases away from a controlled combustion inside an engine or stove. The entire system conveys burnt gases from the engine and includes one or more exhaust pipes. Depending on the overall system ...

  8. Anti-mask law - Wikipedia

    en.wikipedia.org/wiki/Anti-mask_law

    The present table provides a non-exhaustive overview comparing legal restrictions of face coverings in European states. The 2010 French ban on face covering is widely regarded as the most strict, prohibiting face coverings in almost all situations in public places, as opposed to limited restrictions in countries such as Denmark that only outlaws such practices in the context of public ...

  9. Transmission loss (duct acoustics) - Wikipedia

    en.wikipedia.org/wiki/Transmission_Loss_(duct...

    Transmission loss (TL) in duct acoustics describes the acoustic performances of a muffler-like system.It is frequently used in the industry areas such as muffler manufacturers and NVH (noise, vibration and harshness) department of automobile manufacturers, and in academic studies.