hey have any of you heard of digitor microphones? ive found this mic its called a digitor c1537 and it costs $80 ($40 u.s)
and its got:
Frequency response: 40 - 15,000 HZ
Not great response, but impossible to tell without more details, like a +/- figure.
Impedance: 500 +/- 30%
Pretty wide deviation for a microphone; it means the impedance will be anywhere from 350 ohms to 650 ohms, a wide tolerance.
Sensitivity: -76dB +/- 3dB
That's a VERY low output spec with a wide deviation. -79dB (worst case) would take a hell of a preamp to bring it up to a usable level.
is this a good microphone?
Not very good, judging from those specs.
i've seen more expensive microphones with a lower impedance... like shure sm57... is it better to have low impedance?
It's not better or worse; it can make a big difference when you connect it to the mixer or a mic preamp.
what difference does it make??
An impedance mismatch can cause problems with levels, high frequency response, and low frequency response.
why is the sky blue?
All the colors in white light have different wavelengths. Red light has the longest wavelength. The wavelength of blue light is about half that of red light. This difference in wavelength causes blue light to be scattered nearly ten times more than red light. Lord Rayleigh studied this phenomena in detail. It is caused the "Tyndall effect" or "Rayleigh scattering".
Lord Rayleigh also calculated that even without smoke and dust in the atmosphere, the oxygen and nitrogen molecules would still cause the sky to appear blue because of scattering.
When blue light waves try to go straight through an oxygen and nitrogen molecules, its light is scattered in all directions because of this collision. This scattered blue light is what makes the sky blue. All other colors (with longer wavelengths than blue light) are scattered too. Blue light's short wavelength causes it to be scattered the most. (The shorther the wavelength of the color, the more that color gets scattered by the atmosphere)
Actually, violet has the shortest wavelength of all colors. Violet is scattered even more than blue light. However, our eyes are much more sensitive to blue light than violet light, therefore we see the sky as blue.
why is the grass green?
chlorophyll in the plants aborb the other light wave lengths, refecting back light which our eyes see as the color green.
these are my questions...
............i hope they will find answers
.....someday
thankyou for your time.