Why 6db per octave

Show 3 more comments. Design a 1st Order Butterworth Filter Apply 1st Order Buttworth to the White Noise Sequence [Use the Bilinear Transform to convert the analog coefficients to digital, and apply the digital filter to the white noise sequence].

Set the first pole close to the unit circle. Convert these roots to coefficients, and use these coefficients as the coefficients of a digital filter. Apply said digital filter to the White Noise Sequence. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Explaining the semiconductor shortage, and how it might end. On 30 Jan, , rayaudiol It means that you should see a straightis line with slope 6 dB per octave when the filter response is plotted in a log-log Bode plot.

You might have designed this filter from a '6dB per octave' analog prototype, but in this case the frequency response is warped so a term like '6dB per octave' needs not make any sense in discrete time domain. Rune Reply Start a New Thread. Jason Reply Start a New Thread. Not so. Previous 1 2 3 Next. Sign in Sign in Remember me Forgot username or password? Create account. An octave is normally doubling signal intensity, while a decade is multiplying by 10 signal intensity.

An octave is normally doubling signal frequency, while a decade is multiplying by 10 signal frequency. Is a new decade? The year has arrived—and with it, the beginning of a new decade. What is a period of 10 years called? A decade is a period of 10 years. What is octave per minute? Sweep Rate: The rate at which the frequency range is traversed. What is an octave in terms of frequency? In electronics, an octave symbol oct is a logarithmic unit for ratios between frequencies, with one octave corresponding to a doubling of frequency.

For example, the frequency one octave from or above 40 Hz is 80 Hz. The term is derived from the Western musical scale where an octave is a doubling in frequency. The fall off in gain of a filter is quite linear beginning from the corner frequency also called the cut off frequency. The linear fall off in gain is common to both high and low pass filters, it is just the direction of the fall, increasing or decreasing with frequency, that is different.

This can be seen by comparing the Bode plots for a high pass filter on the How Filters Work page and the Bode plot Fig. Hons All rights reserved. Revision Learn about Electronics - AC Theory. AC Theory Modules 2.