Seismac audio review9/5/2023 However, to a 25mm tweeter playing a signal at 5kHz at 35dB, which has a resultant amplitude of 0.7 microns, a displacement of 10 microns is huge. These are constant tiny earth displacements of between 1 and 10 microns, which we don’t feel because they are too small. The sharpness that spikes bring to the sound, according to Townshend Audio, comes from a separate, but perhaps more insidious, issue of microtremors, which constitute the background noise that you see on seismographs. Putting spikes under a speaker gives it a faster, sharper sound that has greater immediacy than a speaker on rubber feet for instance. If you have your speakers spiked to concrete, that resonance is at about 100Hz and about 50Hz on wood or carpet. Valves are, of course, transparent in ways that transistors aren’t, but few would argue that they produce a linear tonal response.Īccording to Townshend, playing music through speakers on spikes is much like plucking a ruler in a vice, and the whole cabinet resonates as a result. As long as the distortions are harmonious, we don’t seem to mind them and even – in the case of valve electronics – positively love them. Essentially, this is ‘distortion’, and many forms of distortion are euphonic, in that they change the sound in an attractive way, almost by making up for aspects that get lost in the reproduction chain. The goal is to be as ready as possible to respond.One of the biggest problems in the pursuit of high fidelity is establishing what exactly is in the signal and what the reproduction equipment adds to that signal. “The relationships we formed with our Army Guard friends will be vital if an earthquake of this magnitude does occur. “This is more than just an exercise,” said Griesbaum. ![]() NORTHCOM, Washington state National Guard emergency operations members, and key members of the Alaska National Guard in one location for the exercise,” said Sprague. “We gained a tremendous amount of insight by having U.S. “Arctic Eagle showed once again that the Alaska National Guard is always ready and able to help the nation and the state regardless of the situation.”ĭuring the exercise, Alaska Air and Army National Guard members worked together to coordinate the emergency response. ![]() ![]() “Arctic Eagle 23 brought a diverse group of Alaska National Guard members together, requiring them to form a team, assess the situation, and learn on the job,” said Kelsey. North American Aerospace Defense Command conducted academic training focusing on the Joint Operations Center to prepare for the emergency response tactical exercise. All 50 states, three territories, and the District of Columbia have EMAC agreements, enabling interstate aid in a disaster. Alaska has a mutual aid agreement with Washington for Emergency Management Assistance Compact capabilities. Joshua Sprague, 168th Wing.Įmergency managers from Washington state also participated in the exercise. “We want to be able to respond rapidly and efficiently, and training together allows us to move toward that goal,” said Lt. In this scenario, the earthquake disrupted public utilities and caused widespread infrastructure damage in southern Alaska. The exercise focused on the immediate response to a 9.2 magnitude earthquake, including emergency communications to respond to the seismic zone and coordinate with local, state and federal agencies. “The training we received ensures we will be able to effectively respond to help our fellow Alaskans in a crisis and to effectively interface with our local, state and federal interagency partners.” “This exercise was extremely important to help us develop and test a continuity of operations plan which will allow us to respond in the event of a significant event in the Anchorage area which reduces or disables the ability of our primary emergency operations command and control agencies to function,” said Col. ![]() The 168th Wing Joint Operations Center and Crisis Action Management Team worked alongside counterparts from the Army National Guard and members of the Joint Operations Center at Alaska National Guard Joint Force Headquarters. “Testing our emergency plans and training our service members is critical to ensuring we are prepared to serve our fellow Alaskans in their time of need.” Aaron Kelsey, Alaska National Guard deputy director of emergency operations. “The Arctic Eagle 23 exercise focused on testing our continuity of operations plan and training our service members north of the Alaskan Range,” said Col. The exercise scenario required members to respond to a large earthquake and multiple tsunamis striking southern Alaska and coastal communities. EIELSON AIR FORCE BASE, Alaska - The 168th Wing and the Alaska National Guard Joint Force Headquarters conducted an earthquake continuity of operations (COOP) exercise, moving the joint operations center from Anchorage to Fairbanks May 1-5.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |