Resistors create noise when Current flows through them.
It's not easy to measure, and it covers a very broad Frequency-range.
The larger the Resistance-Element is, the less Noise it makes.
The particular Construction-Techniques used to make the Resistor also create
noticeably different amounts of Noise,
That's why a "Metal-Film" type Resistor makes less Noise than a "Carbon-Composition" Resistor.
Precision "Metal-Film" Resistors may cost ~5 to ~10 times what a Carbon-Resistor costs.
It really depends on just how much background Noise, ( mostly "HISSSSS" ), is acceptable to You.
The "Signal-to-Noise-Ratio" ( SNR ) is what really counts.
If You are always recording very loud Sounds, then the Noise will be so much
less than the sounds that You want, that the background Noise may become almost irrelevant.
But if You are recording moderate-level sounds, especially with a very dead and silent background,
the Hiss may become quite noticeable, and irritating, especially when listening with Headphones.
Knowing the expected circumstances of usage of the Microphone will help to determine
whether or not "Noise" will be a factor that must be considered in the design of the Amplifier.
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.
.
It's not easy to measure, and it covers a very broad Frequency-range.
The larger the Resistance-Element is, the less Noise it makes.
The particular Construction-Techniques used to make the Resistor also create
noticeably different amounts of Noise,
That's why a "Metal-Film" type Resistor makes less Noise than a "Carbon-Composition" Resistor.
Precision "Metal-Film" Resistors may cost ~5 to ~10 times what a Carbon-Resistor costs.
It really depends on just how much background Noise, ( mostly "HISSSSS" ), is acceptable to You.
The "Signal-to-Noise-Ratio" ( SNR ) is what really counts.
If You are always recording very loud Sounds, then the Noise will be so much
less than the sounds that You want, that the background Noise may become almost irrelevant.
But if You are recording moderate-level sounds, especially with a very dead and silent background,
the Hiss may become quite noticeable, and irritating, especially when listening with Headphones.
Knowing the expected circumstances of usage of the Microphone will help to determine
whether or not "Noise" will be a factor that must be considered in the design of the Amplifier.
.
.
.