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Parallel compression, also known as New York compression, is a dynamic range compression technique used in sound recording and mixing. Parallel compression, a form of upward compression , is achieved by mixing an unprocessed 'dry', or lightly compressed signal with a heavily compressed version of the same signal.
Psychological statistics is application of formulas, theorems, numbers and laws to psychology. Statistical methods for psychology include development and application statistical theory and methods for modeling psychological data. These methods include psychometrics, factor analysis, experimental designs, and Bayesian statistics. The article ...
In most situations, arithmetic coding can produce greater overall compression than either Huffman or Shannon–Fano, since it can encode in fractional numbers of bits which more closely approximate the actual information content of the symbol. However, arithmetic coding has not superseded Huffman the way that Huffman supersedes Shannon–Fano ...
Upward compression increases the volume of quiet sounds below a certain threshold. The louder sounds above the threshold remain unaffected. Some compressors also have the ability to do the opposite of compression, namely expansion. Expansion increases the dynamic range of the audio signal. [3] Like compression, expansion comes in two types ...
Shannon's source coding theorem states a lossless compression scheme cannot compress messages, on average, to have more than one bit of information per bit of message, but that any value less than one bit of information per bit of message can be attained by employing a suitable coding scheme. The entropy of a message per bit multiplied by the ...
For low levels on the 1000 Hz graph, such as the 20–40 dB range, the curve is relatively parallel. As the masker intensity increases the curves separate, especially for signals at a frequency higher than the masker. This shows that there is a spread of the masking effect upward in frequency as the intensity of the masker is increased.
The British Journal of Mathematical and Statistical Psychology is a British scientific journal founded in 1947. It covers the fields of psychology , statistics , and mathematical psychology . It was established as the British Journal of Psychology (Statistical Section) , was renamed the British Journal of Statistical Psychology in 1953, and was ...
Following the initial theory, research began to focus on social comparison as a way of self-enhancement, [3] introducing the concepts of downward [4] and upward comparisons and expanding the motivations of social comparisons. [5] Social comparison can be traced back to the pivotal paper by Herbert Hyman, back in 1942.