Physics 4700 HOMEWORK V Due March 21
... d) Assume that the current is given by the expression in part c) and the voltage is given by the expression in part b). Show that the resulting current has a term that depends linearly on cosωct and a term that depends linearly on cosωmt (it also has lots of other terms!). e) Remembering that the ba ...
... d) Assume that the current is given by the expression in part c) and the voltage is given by the expression in part b). Show that the resulting current has a term that depends linearly on cosωct and a term that depends linearly on cosωmt (it also has lots of other terms!). e) Remembering that the ba ...
Homework 15
... a) The gain of an RC filter (either hi-pass or lo-pass) at the cutoff frequency is _________________ . b) If an RC filter has an output of 7 V at its half-power point, the output voltage will be _______________ V at the cutoff frequency. c) If a device has a gain of 90, its gain in dB is ___________ ...
... a) The gain of an RC filter (either hi-pass or lo-pass) at the cutoff frequency is _________________ . b) If an RC filter has an output of 7 V at its half-power point, the output voltage will be _______________ V at the cutoff frequency. c) If a device has a gain of 90, its gain in dB is ___________ ...
Coulomb`s Law
... gain is - 3 dB. The - 3 dB point is considered to be the breakpoint. •The Bode plot for the RC low-pass filter is often sketched by drawing a horizontal line up to the breakpoint followed by a line falling off at - 20 dB per decade as shown by the blue line in the graph below. The actual gain curve ...
... gain is - 3 dB. The - 3 dB point is considered to be the breakpoint. •The Bode plot for the RC low-pass filter is often sketched by drawing a horizontal line up to the breakpoint followed by a line falling off at - 20 dB per decade as shown by the blue line in the graph below. The actual gain curve ...
Equalization (audio)
Equalization (British: equalisation) is the process of adjusting the balance between frequency components within an electronic signal. The most well known use of equalization is in sound recording and reproduction but there are many other applications in electronics and telecommunications. The circuit or equipment used to achieve equalization is called an equalizer. These devices strengthen (boost) or weaken (cut) the energy of specific frequency bands.In sound recording and reproduction, equalization is the process commonly used to alter the frequency response of an audio system using linear filters. Most hi-fi equipment uses relatively simple filters to make bass and treble adjustments. Graphic and parametric equalizers have much more flexibility in tailoring the frequency content of an audio signal. An equalizer is the circuit or equipment used to achieve equalization. Since equalizers, ""adjust the amplitude of audio signals at particular frequencies,"" they are, ""in other words, frequency-specific volume knobs.""In the field of audio electronics, the term ""equalization"" has come to include the adjustment of frequency responses for practical or aesthetic reasons, often resulting in a net response that is not truly equalized. The term EQ specifically refers to this variant of the term. Stereos typically have adjustable equalizers which boost or cut bass or treble frequencies. Broadcast and recording studios use sophisticated equalizers capable of much more detailed adjustments, such as eliminating unwanted sounds or making certain instruments or voices more prominent.Equalizers are used in recording studios, radio studios and production control rooms, and live sound reinforcement to correct the response of microphones, instrument pick-ups, loudspeakers, and hall acoustics. Equalization may also be used to eliminate unwanted sounds, make certain instruments or voices more prominent, enhance particular aspects of an instrument's tone, or combat feedback (howling) in a public address system. Equalizers are also used in music production to adjust the timbre of individual instruments by adjusting their frequency content and to fit individual instruments within the overall frequency spectrum of the mix.The most common equalizers in music production are parametric, semi-parametric, graphic, peak, and program equalizers. Graphic equalizers are often included in consumer audio equipment and software which plays music on home computers. Parametric equalizers require more expertise than graphic equalizers, and they can provide more specific compensation or alteration around a chosen frequency. This may be used in order to remove (or to create) a resonance, for instance.