出典:Wikipedia
出典:『Wikipedia』 (2011/08/05 16:09 UTC 版)
A low-pass filter is a filter that passes low-frequency signals but attenuates (reduces the amplitude of) signals with frequencies higher than the cutoff frequency. The actual amount of attenuation for each frequency varies from filter to filter. It is sometimes called a high-cut filter, or treble cut filter when used in audio applications. A low-pass filter is the opposite of a high-pass filter. A band-pass filter is a combination of a low-pass and a high-pass.
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a filter used for taking a photograph
the lesser anteater
the lesser anteater
the drastically cut film
a membrane which is semipermeable
低空爆撃.
the photographic film that used in slide projectors
the product of percolation
a filter used for taking a photograph
the lesser anteater
the lesser anteater
a membrane which is semipermeable
the drastically cut film
the photographic film that used in slide projectors