DC/AC Fundamentals: A Systems Approach
... A band-pass filter allows frequencies between two critical frequencies and rejects all others. •A band-stop filter rejects frequencies between two critical frequencies and passes all others. •Band-pass and band-stop filters can be made from both series and parallel resonant circuits. •The bandwidth ...
... A band-pass filter allows frequencies between two critical frequencies and rejects all others. •A band-stop filter rejects frequencies between two critical frequencies and passes all others. •Band-pass and band-stop filters can be made from both series and parallel resonant circuits. •The bandwidth ...
Using Two-Point Modulation To Reduce Synthesizer Problems
... Modulation can be applied to different points within the PLL, such as at the VCO input and at the master oscillator1. When modulation is applied to the input of the VCO, high-frequency content above the loop filter bandwidth of the modulating signal is developed at the VCO output. Low-frequency cont ...
... Modulation can be applied to different points within the PLL, such as at the VCO input and at the master oscillator1. When modulation is applied to the input of the VCO, high-frequency content above the loop filter bandwidth of the modulating signal is developed at the VCO output. Low-frequency cont ...
26. EMG Signal Analysis for Identifying Walking Patterns of Normal
... Human walking is a complex and rhythmic activity. It is well integrated effort of brain, nerves and muscles. It relies on the coordinated action of 28 major muscles to control the jointed trunk and limbs and to generate the forces needed to counter gravity and propel the body forward with minimum en ...
... Human walking is a complex and rhythmic activity. It is well integrated effort of brain, nerves and muscles. It relies on the coordinated action of 28 major muscles to control the jointed trunk and limbs and to generate the forces needed to counter gravity and propel the body forward with minimum en ...
HAMTRONICS® TD-5 SUBAUDIBLE TONE ENCODER/DECODER
... these two pins is a switched capacitor highpass filter, which attenuates audio frequencies below 250 Hz by about 36 dB while passing frequencies above 300 Hz. This can filter can be connected in series with the audio path in a receiver to remove the buzz associated with subaudible tones and also to ...
... these two pins is a switched capacitor highpass filter, which attenuates audio frequencies below 250 Hz by about 36 dB while passing frequencies above 300 Hz. This can filter can be connected in series with the audio path in a receiver to remove the buzz associated with subaudible tones and also to ...
Responses to frequently asked questions about elephants and
... How far do infrasonic elephant calls travel? The lower the frequency of a sound, the longer its sound wave. Low frequency sounds can therefore travel farther without being absorbed or reflected by the environment. Intensity of elephant calls varies widely from very soft calls made between mothers an ...
... How far do infrasonic elephant calls travel? The lower the frequency of a sound, the longer its sound wave. Low frequency sounds can therefore travel farther without being absorbed or reflected by the environment. Intensity of elephant calls varies widely from very soft calls made between mothers an ...
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.