{ "item_title" : "Environmental Acoustic Transfer Functions and Filtering Acoustic Signals", "item_author" : [" Brandon P. Dias "], "item_description" : "When dealing with acoustic signals, the environment in which the signal propagates affects the signal in measurable ways. These effects lead to echoes, changes in amplitude, and sometimes a confluence of other signals which may render the signal useless in terms of information retrieval. When considering acoustics in terms of pressure changes due to the driving signal, we are able to model and measure the effects of the environment on a given signal. Once this model is known, we are able to completely invert the environmental transfer enacted on the signal and filter out other signals, as long as some assumptions are held in the implementation of this procedure.", "item_img_path" : "https://covers4.booksamillion.com/covers/bam/1/28/840/417/1288404174_b.jpg", "price_data" : { "retail_price" : "15.95", "online_price" : "15.95", "our_price" : "15.95", "club_price" : "15.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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