1.0 AUDITORIUM DESIGN
An auditorium is designed in a way in which it will accomplish effective projection of the sound to the rear of the auditorium so that distant listeners will not experience an extreme loss of sound level caused by the inverse square law. This projection is normally achieved by having a sufficiently long reverberation time. The inverse-square law is any physical law stating that a specified physical quantity or intensity is inversely proportional to the square of the distance from the source of that physical quantity. Another significant addition to this design is a high, reflective ceiling to reflect sound to the back of the auditorium.
In order to achieve the goal of a crisp clarity to original sound for every member of the audience regardless of their seating location, quality soundproofing for the space is crucial to ensure every word is understood and the music is delivered with great harmony.
2.0 ACHIEVING CLARITY OF SOUND
To achieve clarity of sound, the materials needed for the soundproofing should be decorative; durable; class “A” fire rated; able to absorb sound wave reflections; to control background noise; scatter the sound waves to produce greater balance; and exposure to the sounds emitted from the stage.
The acoustical panels used for soundproofing an auditorium captures and convert the unwanted background noise, dropping the reverberation time down to under 2.0 seconds. This produces better speech clarity for the audience, and help balance out the tones produced by the musicians. The diffusion panels used helps scatter the noise to deliver a better balance spread throughout the room regardless of the seat location.
Even though the richness given by the auditorium reverberation is des...
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The purpose of this experiment was to determine whether if the sound is affected when it travels through different length pipes. The method used to do this experiment was created by using 5 different PVC pipes in the lengths of 10, 20, 30, 40, and 50 centimeters. Then, using a tuning fork, sound will be produced on one end of the PVC pipe and measured with a decimeter on the other end. This experiment was recorded using 5 trials for each independent level and the average decibels (dB) for each pipe length were recorded.
... Association, if a the sound of a plane taking off is 1,000,000,000,000 times the threshold sound, and if the sound of a hand drill is 10,000,000,000 times the threshold sound, during which sound would you wear hearing protection?
During the performance, as part of the act, pyrotechnics were deployed. The pyrotechnics were gerbs. Gerbs are cylindrical devices that are designed to make a spray of 15-foot plumes of sparks for 15 seconds. Gerbs are befitting for use indoors, as long as the appropriate precautions are taken. The pyrotechnics ignited a polyurethane (egg crate foam) material that is used for packing and product display--but not for "sound proofing," as it was used lining the stage. Considering that this foam is not intended for use as a sound treatment in buildings, it was not treated with fire retardants.
pg 6 “Any sound … would be picked up … so long as remained within the field of
We hear sound because circulating conflicts cause the eardrum to vibrate, and feelings are transferred to the acoustic nerve through the fluid and bones of the ear. For example loudness is a relative term. One sound decreases source. As the sound is propagated outward, it is “spread” over a greater area. The minimum sound intensity that can be detected by the human ear...
Lorenzi, C., Gatehouse, S., & Lever, C. (1999). Sound localization in noise in normal hearing listeners. Journal of the Acoustical Society of America, 105 (3), 1810-1820.
Noise (Noise induced hearing loss NIHL): Another occupational hazard that contributes to workplace injury is excessive noise. Excessive noise may have adverse effects, which include, high blood pressure, stress, reduced performance and noise induced hearing loss. While there are other factors contributing to NIHL, the shortage of prevention is a high contributor. Engineering controls is one way of reducing noise at its source (Nelson et al. 20...
The instrument that will be analysed in this report is the acoustic guitar. An acoustic guitar is any guitar that uses acoustics as a means to transmit the strings vibrational energy to the air to produce a sound. The sound from an acoustic guitar is initiated by the strings. When plucked with the fingers or a plectrum it creates vibrational energy which is then transferred to the soundboard or soundbox. Without the soundboard the string alone would not be able to produce much sound as it would just cut through the air without causing much disturbance, but since the soundboard is large and flat it moves the air easier, this process is called mechanical impedance matching. This increases the systems energy transfer efficiency and produces a much louder sound.
Exton, Peter, “The Room Acoustics of the Guangzhou Opera house”, Harold Marshall Group Consultant 2010, Marshall Day Acoustics
... of the carbon microphone that make is so distinct from all other electronic sender tones. With the combination of the real sound of a voice passing through the carbon microphone fused with the technology we have today, the model that is created by Oksanen and Valimaki and used by a range of producers “incorporates a filtered noise source to model the self-induced noise generated by the carbon microphones” (Oksanen, Valimaki 27). With the scientific ability our world has today, we are able to recreate a sound that was first discovered over a century ago. The development of the carbon button microphone definitely makes a statement about our ever-changing technological society. Although it was an object invented many years ago during the Second Industrial Revolution, it has been altered and improved and has therefore left an everlasting impact on our society.
For this task the brief was to design the construction, soundproofing and acoustic treatment of a recording studio complex within a series of set constraints. The complex had to include a control room, living room, reception and bathroom, within an overall floor space of 15m x 15m. The main focus was to be on acoustic design with the use of scale drawings to make the studio clear and easy to understand. For this studio the idea was to design a space suitable for recording large ensemble groups such as orchestras and so the space was designed with this in mind when regarding the size, shape and layout of the space. Arguably two of the most important aspects when designing a studio complex are that the live and control rooms include a lot of natural light and that the communication between the artists and the studio team is free and easy. In the studio this has achieved this by creating a design similar to and inspired by ‘The Big Room’ at Real World Studios (Realworldstudios.com, 2013), where the ‘control room’ and ‘live room’ are actually all within the one space utilising the live end/dead end theory.
... environment. In order to do that we must know the anatomy of our ear and how it functions. An important function is how the sound wave is transmitted into meaningful information through means of frequency, amplitude, and location. By understanding how the ear functions people are able to understand and prevent hearing loss.
Produced sound from speakers has become so common and integrated in our daily lives it is often taken for granted. Living with inventions such as televisions, phones and radios, chances are you rarely ever have days with nothing but natural sounds. Yet, few people know the physics involved in the technology that allows us to listen to music in our living room although the band is miles away. This article will investigate and explain the physics and mechanism behind loudspeakers – both electromagnetic and electrostatic.
“Sound or acoustic energy involves the actual vibration of the actual material through which it passes and thus, in general, propagates best through solids and liquids, less well in gasses and not at all in a vacuum” (Wright et al., 1995, p. 70)
After reading the first paragraphs you may be wondering why are acoustic waves so important in normal life or “why would I ever need this equation?’ Acoustic waves are important because sound is all around us. When you think of the word “acoustic” a few words may come to mind. Guitars, stereos, and many other items involve acoustic waves. For example, when the bass on a stereo is turned all the way up you m...