#Mixing live sound outdoors pdf series#

In August 1912 a large outdoor installation was made at a water carnival held in Chicago by the Associated Yacht and Power Boat Clubs of America.

#Mixing live sound outdoors pdf series#

ДЄ short time later, the Automatic Enunciator Company formed in Chicago order to market the new device, and a series of promotional installations followed. In June 1910, an initial 'semi-public' demonstration was given to newspaper reporters at the Automatic Electric Company building, where a speaker's voice was transmitted to loudspeakers placed in a dozen locations 'all over the building'. Company president Joseph Harris foresaw multiple potential uses, and the original publicity stressed the value of the invention as a hotel public address system, allowing people in all public rooms to hear announcements. In 1910, the Automatic Electric Company of Chicago, Illinois, already a major supplier of automatic telephone switchboards, announced it had developed a loudspeaker, which it marketed under the name of the Automatic Enunciator. The device is also called вЂњspeaking-trumpetвЂќ, вЂњbullhornвЂќ or вЂњloud hailerвЂќ. In the 2020s, cheerleading is one of the few fields where a nineteenth century-style cone is still used to project the voice. The user can direct the sound by pointing the wide end of the cone in a specific direction. The sound projects out the wide end of the cone. The sound is introduced into the narrow end of the megaphone, by holding it up to the face and speaking into it. Megaphones are typically portable, usually hand-held, cone-shaped acoustic horns used to amplify a personвЂ™s voice or other sounds and direct it towards a given direction. ДЄ small sports megaphone for cheering at sporting events, next to a 3В in (8В cm) cigarette lighter for scaleДЇrom the Ancient Greek era to the nineteenth century, before the invention of electric loudspeakers and amplifiers, megaphone cones were used by people speaking to a large audience, to make their voice project more to a large space or group. In Britain any PA system is sometimes colloquially referred to as a Tannoy, after the company of that name, now owned by TC Electronic Group, which supplied many of the PA systems used previously in Britain. The term sound reinforcement system generally means a PA system used specifically for live music or other performances. PA and Intercom systems are commonly used as part of an emergency communication system.

Intercom systems, installed in many buildings, have both speakers throughout a building, and microphones in many rooms so occupants can respond to announcements.

PA systems with many speakers are widely used to make announcements in public, institutional and commercial buildings and locations-such as schools, stadiums, and passenger vessels and aircraft. Simple PA systems are often used in small venues such as school auditoriums, churches, and small bars. A PA system may include multiple microphones or other sound sources, a mixing console to combine and modify multiple sources, and multiple amplifiers and loudspeakers for louder volume or wider distribution. Typical applications include sports stadiums, public transportation vehicles and facilities, and live or recorded music venues and events. be sufficiently audible at a distance or over a large area. PA systems are used in any public venue that requires that an announcer, performer, etc.

It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music. Howard using a public address system to address the crew of USS Wasp (LHD-1) in 2009ДЄ public address system (or PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. Navy Rear Admiral (lower half) Michelle J.