Indirect FM generation first produces a narrow-band (relatively low bandwidth/frequency) FM wave, often created using an integrator, a signal multiplier, a phase shifter, and a summer. Then, it multiplies and mixes this wave's frequency properties to achieve the desired frequency deviation and carrier frequency.
Direct FM generation uses a voltage-controlled oscillator (VCO) to generate the wide-band FM signal directly. The VCO often consists of an oscillator with a variable capacitance or inductance that allows the resonant frequency to vary with the applied voltage.
Direct FM generation has poor frequency stability, so it requires feedback to stabilize this, which complicates the system. Indirect FM generation has good frequency stability, but is noisier since the noise is multiplied during the frequency multiplication.
Choosing one over the other depends on what components are available and how the importance of system/signal characteristics is weighted.
Direct vision is your central vision. It refers to how and what you see when looking straight at an object. Indirect vision refers to your peripheral vision, which means the things you see "out of the corner of your eye" or off to the side while you are looking directly ahead.
Direct heating means heating an object directly by a heater but indirect heating means heating an object by another object which is being heated by a heater.
Yes, indirect sunlight does cause heat, although not as much as direct sunlight does.
The temperature of the thermometer in the direct sunlight was higher than the thermometer in the drawer.
With an indirect water heating system and cylinder, the water that circulates around the boiler, pipes and radiators is kept totally separate from the stored water in the cylinder that is used for bathing. From the outside the indirect cylinder looks identical to the direct cylinder save from two additional pipe connections on the side of the cylinder. Inside the cylinder a coil heat exchanger is installed, which allows hot water from the boiler to flow into the upper connection and leave at the lower connection to return to the boiler for re-heating. The hot water in the coil indirectly heats the water in the cylinder. A Direct Cylinder is heated by a source located within the cylinder - such as an electrical immersion heater. Because the Immersion Heater is heating the water 'directly' the cylinder is called a 'Direct Cylinder'. In a direct cylinder there are no other external heat sources.
the different between direct and indirect adress instruction
The difference between direct marketing and indirect marketing.
The difference between indirect and direct quote life insurance is that the insurance level will differ. Direct is when someone dies, indirect involves other factors.
The difference between direct and indirect supervisor is the presence of the supervisor. Direct supervision means a supervisor is psychically present. Indirect supervision means doing work without the physical presence of the supervisor.
In the direct method, the cells are enumerated by determining colony-forming units on a Petri dish; in the indirect method, the cell numbers are approximated using a spectrophotometer.
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difference b/w direct tax and indirect tax
if hernia tissu pass thrw ing.ring that is indirect ing.hernia.if it is pass thrw abdominal wall that is direct ing.herniaif hernia tissu pass thrw ing.ring that is indirect ing.hernia.if it is pass thrw abdominal wall that is direct ing.herniathe difference between direct hernia and indirect hernia is the direct hernia only affected the superficial inguinal ring and the indirect is affected the deep inguinal ringthe difference between direct hernia and indirect hernia is the direct hernia only affected the superficial inguinal ring and the indirect is affected the deep inguinal ring
give the full chart of the direct and indirect expenses . detail about this
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The difference between direct taxes and indirect taxes with examples is that direct taxes come directly from a person's income or personal property taxes. Indirect taxes comes from sales and excise taxes.