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Author Topic: LA cardioid deconstructed pt. 1  (Read 3977 times)

Merlijn van Veen

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LA cardioid deconstructed pt. 1
« on: March 19, 2016, 11:29:28 am »

There appears to be a lot of controversy regarding the workings of the L-Acoustics cardioid configuration. It's been suggested that it is achieved by means of all-pass filters. Is it a gradient or end-fire solution? In part 1 of this series of articles I will try to explain what I have come to think of as a hybrid approach.

Click here to read the article.

Regards,

Merlijn

Mac Kerr

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Re: LA cardioid deconstructed pt. 1
« Reply #1 on: March 19, 2016, 12:33:49 pm »

There appears to be a lot of controversy regarding the workings of the L-Acoustics cardioid configuration. It's been suggested that it is achieved by means of all-pass filters. Is it a gradient or end-fire solution? In part 1 of this series of articles I will try to explain what I have come to think of as a hybrid approach.

Click here to read the article.

Regards,

Merlijn

Nice article, I can't wait for pt2. Are you going to do an acoustical measurement?

Mac
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Merlijn van Veen

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Re: LA cardioid deconstructed pt. 1
« Reply #2 on: March 19, 2016, 01:18:22 pm »

THNX! If time and opportunity allow for it I might.


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Mark Wilkinson

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Re: LA cardioid deconstructed pt. 1
« Reply #3 on: March 21, 2016, 08:22:15 am »

Interesting, thx.  I can see i'm going to have to spend some time with your S.A.D. manual.

Curious, did you try a transfer, ch 1 against ch 2, straight on it's own  (ie ch2 ref, ch 1 meas) ?

I ask because i've been taking transfers like this confined to lower freqs, just using longer averaging periods to get around the Lin vs log issue you pointed out to me in previous posts. Want to make what i'm trying is valid.....
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Merlijn van Veen

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LA cardioid deconstructed pt. 1
« Reply #4 on: March 21, 2016, 01:17:55 pm »

If you flip numerator and denominator then a cut becomes a boost or vice versa. that's all


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« Last Edit: March 21, 2016, 01:27:56 pm by Merlijn van Veen »
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Merlijn van Veen

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LA cardioid deconstructed pt. 1
« Reply #5 on: March 21, 2016, 01:18:50 pm »

I started whit ch1/ref and ch2/ref before I went to ch2/ch1 or ch1/ch2


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« Last Edit: March 21, 2016, 01:27:32 pm by Merlijn van Veen »
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Johan Falt

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Re: LA cardioid deconstructed pt. 1
« Reply #6 on: September 15, 2016, 02:36:21 am »

When will se Part 2? Can't wait...

Thank you for doing this!
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Re: LA cardioid deconstructed pt. 1
« Reply #6 on: September 15, 2016, 02:36:21 am »


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