Using analyst to look at guitar pickup response

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maximumpower
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2011/08/13 08:37:32 (permalink)

Using analyst to look at guitar pickup response

I want to see the response of different guitar pickups so I plugged two of my guitars in and ran them through analyst. The response seemed more flat than I would have expected. I tried strumming a chord and playing single strings. I would have thought I would see certain frequencies more pronounced then others. While the output is pretty jagged, it was a lot more flat. Plus there are a lot of low frequencies that I didn't think a guitar could produce. Perhaps these are beat frequencies.

The two pickups/guitars sound quite a bit different to me but the spectrum doesn't show that.

Has anyone used Analyst for this or a similar purpose? Am I going about it the wrong way?

Thanks
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    lfm
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    Re:Using analyst to look at guitar pickup response 2011/08/13 09:18:54 (permalink)
    I did this switching a couple of pickups in a guitar to see differences.

    I used Ozone which has a setting to accumulate incoming audio, not just analys a certain time period - and give you a nice chart of frequency content and levels.

    This feature also has a very nice comparison chart you can use to compare different mixes and see what you might go for to make the sound more alike.

    I ran my test with picking(5-10 quick picks) a single string open, at fifth and 8th fret.
    And did this on each string.
    Then I did the same with chords.

    In Ozone you can save these different charts and easily put them over eachother.

    I learned a lot from that - both on pickups and mastering mixes.

    #2
    John T
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    Re:Using analyst to look at guitar pickup response 2011/08/13 09:23:20 (permalink)
    Electric guitars have a pretty exceptionally wide frequency range.

    That aside, in Analyst, using the realtime view, don't just look at the size of the spikes, also look at the colouration. The redder the bars are, the more energy is concentrated in those frequencies. It's the same information as size, really, but easier to read for some purposes.

    The differences between guitar pickups will be reasonably subtle, as they'll both be fairly full range, but will have somewhat different areas of most energy.

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    bitflipper
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    Re:Using analyst to look at guitar pickup response 2011/08/13 11:05:11 (permalink)
    Much of the character of different pickups comes not from overall static frequency response but rather dynamic frequency response, e.g. transient response and the way different frequencies' amplitudes decay during the sustain portion. You'll need something more sophisticated than Analyst for that, something that plots frequency response over time, like a waterfall plot. I don't know of any plugin that does that.


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    #4
    The Maillard Reaction
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    Re:Using analyst to look at guitar pickup response 2011/08/13 16:08:45 (permalink)


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    maximumpower
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    Re:Using analyst to look at guitar pickup response 2011/08/13 20:36:17 (permalink)
    Thanks for the responses. I'll just go by manufacturers specs and my ears lol
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    cornieleous
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    Re:Using analyst to look at guitar pickup response 2011/08/13 20:47:37 (permalink)
    bitflipper


    Much of the character of different pickups comes not from overall static frequency response but rather dynamic frequency response, e.g. transient response and the way different frequencies' amplitudes decay during the sustain portion. You'll need something more sophisticated than Analyst for that, something that plots frequency response over time, like a waterfall plot. I don't know of any plugin that does that.



    http://www.bluecataudio.c...s/Bundle_AnalysisPack/





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    Somerset
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    Re:Using analyst to look at guitar pickup response 2011/08/13 21:16:09 (permalink)
    Man that looks awesome Cornielious- must check it out. Thanks for posting that link.
    #8
    Stone House Studios
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    Re:Using analyst to look at guitar pickup response 2011/08/13 22:06:20 (permalink)
    "Blue Cat Audio's Analysis Pack gives such great visual feedback on my tunes that I'm thinking about ditching the speakers altogether."

    WoW.  Now that's a glowing compliment.  Personally, I can't wait to start mixing my tunes without listening to them.

    Has anyone shown this to Pete Townshend?

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    Rain
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    Re:Using analyst to look at guitar pickup response 2011/08/13 23:51:14 (permalink)
    Stone House Studios


    "Blue Cat Audio's Analysis Pack gives such great visual feedback on my tunes that I'm thinking about ditching the speakers altogether."

    WoW.  Now that's a glowing compliment.  Personally, I can't wait to start mixing my tunes without listening to them.

    Has anyone shown this to Pete Townshend?

    Brian

    The industry understood long ago that music is all about undulating curves on a screen. ;)

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    #10
    chuckebaby
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    Re:Using analyst to look at guitar pickup response 2011/08/14 00:26:04 (permalink)
    i have the bluecat bundle as well..dont try and tell me you dont have to be a brain sugeon to use these things.

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    #11
    mudgel
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    Re:Using analyst to look at guitar pickup response 2011/08/14 01:18:04 (permalink)
    Quite a number of years ago I got hold of HarBal which is a visual feedback program for audio content. It allows you another one of your senses to be involved in the audio production process.

    I spent quite a long time looking at what sound was like. - at least in so far as HarBal showed it.

    The idea being that at various times your ears can be fooled but the visual representation would remain the same.

    It's a great training tool and certainly has it's uses. It's soon to come out as version 3 with a further evolution of the HarBal concept.
     
    I waffled and didn't make my point.
     
    using harBal gives you an interesting way to view audio material. You can get a free trial and use it to get some of the visual feedback you're after about your guitar pickups.
    post edited by mudgel - 2011/08/14 01:20:06

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    #12
    bitflipper
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    Re:Using analyst to look at guitar pickup response 2011/08/14 11:02:57 (permalink)
    http://www.bluecataudio.c...s/Bundle_AnalysisPack/

    No doubt that is a great collection of meters. But they are all "real-time" metrics, meaning they show spectral amplitude averaged over some period of time, which might be 50ms or 5 seconds. What they don't show is how the response changes from the first 50ms to the last 50ms in the sampled range, which is what you really need to compare transducers.

    This is the great weakness of Har-Bal, too. It averages spectral amplitude over the entire file, which is rarely useful for corrective purposes, although it still has value as an instructive and diagnostic tool.


    All else is in doubt, so this is the truth I cling to. 

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    #13
    lfm
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    Re:Using analyst to look at guitar pickup response 2011/08/14 13:13:27 (permalink)
    Just use the infinite setting in Ozone and it works beautyfully. It accumulate a frequency profile as long as you wish.

    And you can learn a lot seeing how old vinyl is profiled and modern cd's.
    Interesting to see recording after recording follow the same pattern.

    And works well to profile a guitar as well.

    And Ozone is cheaper than this bundle pack. And you get plenty dither algorithms and other stuff useful especially for sonar Studio users which got no good ones as standard.
    #14
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