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In digital signal processing, downsampling, compression, and decimation are terms associated with the process of resampling in a multi-rate digital signal processing system. Both downsampling and decimation can be synonymous with compression , or they can describe an entire process of bandwidth reduction ( filtering ) and sample-rate reduction.
Method 2 will work in more general cases, e.g. where the ratio of sample rates is not rational, or two real-time streams must be accommodated, or the sample rates are time-varying. See decimation and upsampling for further information on sample-rate conversion filter design/implementation.
A teaching method is a set of principles and methods used by teachers to enable student learning. These strategies are determined partly by the subject matter to be taught, partly by the relative expertise of the learners, and partly by constraints caused by the learning environment. [ 1 ]
Decimation is the process of reducing sample rate. Decimation originally meant "take one sample in every 10", but later this term was generalized to simply mean any reduction in sample rate. This electronics-related article is a stub .
The direct method in teaching a language is directly establishing an immediate and audiovisual association between experience and expression; words and phrases; idioms and meanings; and rules and performances through the teachers' body and mental skills, avoiding involvement of the learners' mother tongue.
In the late 1800s and most of the 1900s, [3] language teaching was usually conceived in terms of method. In seeking to improve teaching practices, teachers and researchers would typically try to find out which method was the most effective. [4] However, method is an ambiguous concept in language teaching and has been used in many different ways ...
Wilby and Wigley placed meteorological downscaling techniques into four categories: [6] regression methods, weather pattern-based approaches, stochastic weather generators, which are all statistical downscaling methods, and limited-area modeling (which corresponds to dynamical downscaling methods). Among these approaches regression methods are ...
Upsampling requires a lowpass filter after increasing the data rate, and downsampling requires a lowpass filter before decimation. Therefore, both operations can be accomplished by a single filter with the lower of the two cutoff frequencies.