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Y = 21.148ln(x) - 199.66, where y is dB and x is a linear value between 8īut that formula seems totally wacko - even though it has an r^2 of 0.997. Convert the Eb/N0 value in dB into the Eb/N0 value in the linear scale. I tried reverse engineering it, by building an x, y scatter plot and i get: The continuous respond has the ffplot function to show the linear. However, I would like to have linear scale (0-1 for the y-axis), is it doable If yes, please assist me how to do it. The freqz (z,p) gives the plot of magnitude in dB (log scale) versus the normalized frequency. Hopefully, someone who touches the code can copy and paste the formula. Linear Scale of a Frequency Response Plot (freqz) - Digital Filter.
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It's labels don't conform to cakewalks - it just sends an receives an integer between 8 . Once can approximately measure the linear location of each label (-24, -12, -6, 0 etc.).ĭoesn't even closely resemble the formula!Ĭakewalk seems to have its own logic.and that's what I'm trying to get some insight into. If you do a screenshot of the cakewalk fader strips, they go from INF to +6. Syntax Description example d 20 10 ( y) Examples collapse all Magnitude of Elements in an Array For this example, generate a 2-by-3-by-4 array of Gaussian random numbers. (The mackie isn't the issue, its Cakewalk). Decibel - Wikipedia, the free encyclopedia This is the first Ive ever seen anything else like that. Unfortunately, while you are correct about the "standard", cakewalk doesn't seem to use it. Syntax ydb mag2db (y) Description example ydb mag2db (y) expresses in decibels (dB) the magnitude measurements specified in y. y db2mag(ydb) returns the magnitude measurements, y, that correspond to the decibel (dB) values specified in ydb. Hmm, whoever wrote the wikipedia page seems to agree with what Im saying about 10log(A) being a conversion from linear to dB scale, while 20log(A) converts between amplitude gain on the linear scale to power gain on the dB scale. This is a good answer-but decibels (and many other logarithmic scales used in science) are related to base 10 10, so a more general formula would be appropriate. y db2mag (ydb) returns the magnitude measurements, y, that correspond to the decibel (dB) values specified in ydb. I can't remember if the Mackie does any scaling at all for the fader values before it sends out or not, but the formula for going between a linear & db scale is pretty standard: If your data on the loga log a scale are x x, then on the linear scale they are y y such that y ax y a x for a > 0 a > 0.