Talk:Band-pass filter

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Tihe page history for this article has been merged from three articles on the same topic. It probably doesn't make a lot of sense now. Please could someone who understands the content of it merge the three in properly. Thanks. Angela 02:42, Sep 28, 2003 (UTC)

The article says that a band pass filter is USUALLY <whatever the article>, if we are not going to spell out exceptions we should remove that qualificiation.

[edit] Discard "Gibbs phenomenon" reference

The rippling in the frequency response of a filter has ABSOLUTELY nothing to do with the Gibbs phenomenon (the so-called "overshoot" response in the time domain to a filtered step function). The "ripples" in the frequency domain for some filters (e.g. Chebyshev filters) are a design choice, unlike the "Gibbs phenomenon" which is unavoidable mathematically.... Aargh. 90.17.171.36 14:41, 15 June 2007 (UTC)Gerard

Thanks to whoever fixed the article to remove that unfortunate analogy with the "Gibbs phenomenon". 90.23.13.141 15:02, 10 July 2007 (UTC) Gerard

[edit] The example;

What order of filter is the example in the article? -- ∞Wirelain 03:56, 10 July 2006 (UTC)

Not all bandpass filters have a bell shape. scoofy 20:13, 7 April 2007 (UTC)

True, and the word "bell" is nowhere in the article. But I agree the example figure is misleading and atypical, and the caption is complete nonsense. Dicklyon 01:16, 8 April 2007 (UTC)

^^ are you kidding? Obviously you have no idea what a bode plot is. The graph should contain a logarithmic frequency axis. I agree the graph is misleading in its bell shape, however, the caption clearly states that is only symbolic. The actual graph would have much sharper corners at both the high and low cutoff frequencies, however, as a simple, symbolic graph it is more than adequate. —The preceding unsigned comment was added by 137.104.249.250 (talk • contribs).

I don't see any indication that it should be a Bode plot. But as I said, it's misleading and atypical, and therefore really NOT "more than adequate". It's particularly inadequate if it gives wrong impressions. Dicklyon 21:22, 25 April 2007 (UTC)

The plot has been replaced with one that is less bell shaped and more bandpass shaped. It is not a Bode plot. The ordinate is linear, and the abscissa is unspecified. Dicklyon 07:17, 28 June 2007 (UTC)

[edit] Wah Wah

Since Wah pedals are probably the most famous implementation of a Bandpass filter; shouldn't they be mentioned? —Preceding unsigned comment added by 143.239.7.1 (talk) 15:48, 27 October 2007 (UTC)

Sure they should; but not without a source. Dicklyon 17:05, 27 October 2007 (UTC)