2024年3月7日 · If both amplitude and frequency are important for calculating the power of a sound wave, why is it that when it comes to calculating decibels, frequency does not matter? For example, if a 500 Hz and a 1000 Hz pure tone both have the same RMS normalized amplitude measurement (e.g., 0.50), then they both have the same decibel measurement (20*log ...

2007年5月19日 · The frequency of the sound depends on how fast the diaphragm moves back and forth (frequency of its oscillation). The amplitude of the sound wave (loudness of the sound) is on the other hand much more complex, but one of the factors (the one that can be changed by changing the electrical signal) on which it depends is how much the diaphragm ...

2016年11月11日 · It was arrived at without reference to the amplitude or frequency and is true so long as the interaction between elements is harmonic (linearly proportional to displacement). To see how this enforced the speed regardless of frequency or amplitude, I write a general wave equation Y(x,t) = A e i (w t + C x) d 2 y / dt 2 = -w 2 A e i (w t + C x)

2017年4月22日 · I think a frequency spectrum is a plot of frequency versus power (usually in decibels, in engineering). The power will be measured in a narrow passband which is swept across the spectrum,. An amplitude spectrum is perhaps the same thing where amplitude, not power, is displayed. Amplitude is proportional to the square root of power.

2011年8月11日 · The Amplitude is now the density of particles, each particle having the minimum measurable amplitude and only differing in frequency. It is just a point of view. Aug 11, 2011

2008年12月9日 · [SOLVED] Finding the Amplitude of a spring (Simple Harmonic Motion) First post here at PF, so forgive me if I make a faux pas. I'm trying to study for an upcoming Physics test and I'm having a bit of trouble with this. Homework Statement A massless spring with spring constant 19 N/m hangs vertically.

2006年6月15日 · You will notice that the frequency is inversely proportional to the mass: if the mass doubles, then the frequency is divided by [itex]\sqrt{m}[/itex], the object moves more slowly. However, amplitude is directly proportional to the mass: if the mass doubles, then the amplitude is multiplided by [itex]\sqrt{m}[/itex]- the heavier object will go ...

2012年1月30日 · (c) Amplitude will decrease but frequency stays the same (d) Only the frequency changes since the mass is now different (e) Both the amplitude and the frequency will decrease Homework Equations f=(1/2pi)(√L/g) The Attempt at a Solution So I know for sure that the frequency doesn't change with mass so that rules out A, D,and E, but what does ...

2007年2月9日 · However, the frequency of a sound wave also plays a role in the energy required. Higher frequency waves have more cycles per second, which means they also require more energy to maintain a constant amplitude. To put it simply, it takes more energy to increase the amplitude of a high frequency sound wave compared to a lower frequency wave.

2020年8月31日 · When the object is in an evacuated container, the motion is simple harmonic motion, with an amplitude of 0.10 m. When air is allowed into the container, the amplitude decreases by 2.0% with each cycle of the oscillation. (a) What is the amplitude after 25 cycles? (b) What fraction of the initial energy is left 6.3 s after air is admitted?