Sound control

Architectural Saflex for Sound Control, Tech. Bulletin No. 6295, Monsanto Polymers and Petrochemicals, St. Louis, Mo., 1972. 

American Petroleum Institute (API), Standard 615, Sound Control of Mechanical Equipment for Refinery Services. API, Washington, D.C., 1987. 

Plant names seemed difficult to remember, but they had specific rules. As noticed in the previous recipe, the classification of a plant was usually by one word composed of several phonemes or the smallest sound units which, in terms of the phonetic sequences of sound, controls meaning. Indeed, the simplest classification was by using two phonemes, quite similar to the current classification by genus and... 

Use a punch to drive out the front sight blade from the barrel. Drill bleed holes as before but continue them to within one inch of the muzzle.Note It s not necessary to remove the aluminum outer barrel housing as in the short barreled version, although it may be done if desired. This will increase volume inside the silencer and better sound control. remove burrs from the Step 5... 

SECTION EIGHT - Notes on Additional Sound Control... 

Although the suppressor will eliminate muzzle blast noise,flash and smoke, a super sonic crack will be heard when standard 5.56 NATO or commercial. 223 ammo is used. If special circumstances dictate maximum sound control and allow for reduced range and stopping power,the crack can be eliminated by firing specially loaded subsonic rounds. 

The last step in maximum sound control is to modify the semi auto gas system by adding a gas cutoff valve. The valve is similar to the one used on the M-14. 308 rifle. When the valve is closed,the action functions in the normal semi auto mode. When open,the gas is diverted from the piston/operating rod, and the action ranains locked until opened by hand.This modification has a two fold advantage for sniping type operations. Sound is prevented from exiting the open chamber and the expended brass may be removed and pocketed, not left at the "scene". 

Related to SDIF, but on the control side, is Open Sound Control (OSC). Open sound control allows for networked, extended precision, object oriented control of synthesis and processing algorithms over high-bandwidth TCP/IP, FireWire, and other high bandwidth protocols. 

Figure 14.20 shows a number of sound controllers based on common kitchen and dining objects. The table is pressure sensitive, transmitting... 

Open Sound Control http //cnmat.cnmat.berkeley.edu/OSC/... 

The aims of the research project have been to obtain information on the rates and mechanisms for a range of VOC photo-oxidation reactions under simulated atmospheric conditions. By deriving detailed quantitative kinetic data on the reactions involved in the complex chemistry of the tropospheric photodegradations of VOC, we seek to provide key parameters required in tropospheric modelling. Such mathematical modelling studies will ultimately form the basis for drawing up scientifically sound control strategies for the release of VOC into the atmosphere. 

National Organization to Insure a Sound-Controlled Environment... 

In order to have a safe process successfully producing to specification the required product, a sound control system is necessary but not sufficient. In addition the plant must be well maintained and the... 

Piezo- and pyroelectric transducers for motion sensors, hydrophones, audio devices, etc supercapacitors (103) electrolytic capacitors (104) aircraft interior sound control... 

In new commercial constiuction, gypsum concrete underlayments are applied over structural concrete or precast concrete planks to create a smooth, monolithic floor-surface that delivers superior strength, sound control and fire resistance. 

Each scanner has some means for the detector positioning. This function is used during the setting-up adjustment. By looking on the counting-rate meter or listening to a variable frequency loudspeaker sound, controlled by the radiation intensity, the operator should search for the area with maximum isotope concentration. This manual mode can be used to test the safety switches on the border of the maximum scannable area. If the detector is not stopped there automatically, the drive mechanism can be harmed. 

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