Hornresp

[David McBean]

My book did not make it further than to Germany. It was returned to Amazon and I am awaiting the refund to buy the book somewhere else

How did Jeff Bezos get to be worth ~$110 billion, when his company seemingly provides such appalling customer service?

 

[tmuikku]

Ain't all value measured in billions mostly in stocks, which is based on speculation and other real and imaginary measures? Amazon has biggest market share as global cloud computing service provider I believe. Might get more revenue from that than eCommerce? Anyway, scary big company.

 

[whgeiger]

Success has its consequences.

How did Jeff Bezos get to be worth ~$110 billion, when his company seemingly provides such appalling customer service?

It is manifestation of a problem of organizational size. If it gets noticed, it will get fixed. But the larger problem is that of a greasy balloon. WHG

 

[whgeiger]

One Moment Please ..

Hi Bill,

Yes please!

A spreadsheet that can generate a chart showing an OS waveguide seamlessly transitioning to a 180 degree Le Cléac'h profile mouth termination, would be really excellent.

Thanks and kind regards,

David

… while I work on it in my 'spare' time. Say a week or two from now. Bill

 

[Wonderfully]

simple question

David, how do I use HornResp to model a simple enclosure with three ports. I have no trouble doing a box with one, but I don't see an option for modeling three ports.

 

[cowanaudio]

Just enter the combined area.

Three ports with a combined area of 100cm^2 behave in a very similar manner to a single 100cm^2 port of the same length. Losses are a little higher with multiple ports, but I'm unsure how Hornresponse accounts for this.

 

[David McBean]

Say a week or two from now.

There's no hurry - take all the time that you need.

 

[David McBean]

I'm unsure how Hornresponse accounts for this.

Duct transmission losses are assumed to be zero, unless absorbent filling material is specified.

 

[Andre Vergison]

The Book

Ordered the book (Lean) and received it yesterday (Belgium). Perfectly packaged, can resist a 10 g crash and an 100 meters dive in the water.
Well, that's not a book, that's a masterpiece! It almost outweighs a 811B horn! And so well finished. Didn't almost dare touching it.

I've been reading tons of audio books, but the "introductory" plm. 300 page history (quick browsing about half of the book yesterday evening) is unprecedented!
Everything is so detailed. Bjorn, this must have been a fifteen year full time job, wasn't it?
I take off my hat.


Andre

 

[1hiep0]

Three ports with a combined area of 100cm^2 behave in a very similar manner to a single 100cm^2 port of the same length. Losses are a little higher with multiple ports, but I'm unsure how Hornresponse accounts for this.

Hi Cowanaudio, would ports noise increase? Thanks,

 

[Sabbelbacke]

My copy (Lean Business Order) arrived a few days ago (in Germany) - fast shipping and PERFECT Packaging!! Looking forward to some couch-sessions This is a REAL Book, I love it already (please never print a paperback one..)

 

[David McBean]

Hornresp Update 5050-191115

Hi Everyone,

CHANGE 1

The Maximum SPL tool On / Off settings for a given record can now be permanently saved to the Hornresp.dat data file. Previously only the limit values could be saved.

CHANGE 2

Previously, when either the Maximum SPL or Power Compression tool was used followed by the Filter Wizard tool, if the Filter Wizard On button was clicked to return to the main screen the filter settings were applied to the default response rather than to the maximum SPL or power compression response.

To avoid any confusion the Filter Wizard On button is now disabled in such situations, and clicking the Off button returns to the unfiltered maximum SPL or power compression response.

CHANGE 3

Previously, when either the Maximum SPL or Power Compression tool was used followed by the Filter Wizard tool, if the Passive or Le Cléac'h filter option was selected the filter settings were applied to the default response rather than to the maximum SPL or power compression response.

To avoid any confusion the Passive and Le Cléac'h filter options can no longer be selected in such situations.

BUG FIX 1

For some input settings, the Maximum SPL tool results were incorrect. To illustrate, for the default record (with resonances masked) the input shown in Attachment 1 would produce the results shown in Attachments 2 and 3. The green power-limited sections of the traces are not correct. For the given input setting the outputs should be displacement-limited over the whole frequency range, as shown in Attachments 4 and 5.

This bug has now been fixed.

BUG FIX 2

Sometimes there would be an "overshoot" on the Maximum SPL chart traces, as shown for the diaphragm displacement chart red trace in Attachment 6. This bug has now been fixed, as shown in Attachment 7.

BUG FIX 3

The Le Cléac'h filter results shown in the Filter Wizard were correct but the ones shown on the main chart screens were not. This bug has now been fixed.

Kind regards,

David

 

[David McBean]

please never print a paperback one

And please never make it available as an e-book .

 

[fasterbyelan]

My copy (Lean Business Order) arrived a few days ago (in Germany) - fast shipping and PERFECT Packaging!! Looking forward to some couch-sessions This is a REAL Book, I love it already (please never print a paperback one..)

I rx'ed mine last week, it really is a super piece of work so 'hats off' to the two authors.

 

[Kolbrek]

Thanks for all the nice comments on the book

(please never print a paperback one..)

We thought the content deserved a proper hardback, similar to the old textbooks (Olson, Beranek, Radiotron Designers Handbook, Terman...). That thought also inspired the design of the spine of the book itself.

Also, I don't think a paperback version of this book would last very long. All paperbacks this size I have seen, if they have been used for a while, have broken spines and/or are falling apart.

And please never make it available as an e-book .

See the third paragraph on the copyright page I don't think this book will work well as an e-book.

Everything is so detailed. Bjorn, this must have been a fifteen year full time job, wasn't it?

More of a lifestyle, I would say. The research I did during my MSc and PhD was part of this project too, so during that time (and much of this year too) it was definitely a full time job.

 

[David McBean]

See the third paragraph on the copyright page

I had already checked the page as part of my ongoing proof-reading activities . It says: "no electronic version has been published". If it had said: "no electronic version will EVER be published" I would have known for sure that there would never be an e-book 'horn book' . Incidentally, I did manage to find one typo on the page - "indluding" should be "including". It is on my list... .

I don't think this book will work well as an e-book.

I'm sure that it wouldn't .

 

[whgeiger]

How About a Sensitivity Analysis Tool?

Hi pelanj,

If you would like to experiment along these lines, the Resize Wizard in Hornresp could be used to re-scale the driver parameter values. Another approach could be to use the Multiple Driver Equivalent option in the Loudspeaker Configuration tool. Not sure how valid either of these approaches would be, however .

Kind regards,

David

.. that explores system sensitivity to driver parameter tolerances (variation).
Bill

 

[grindstone]

Anybody else running wine figure out a workaround for the type mismatch error on the new rev yet? The .dat sizes are the same but diff says they're different.

 

[musgofasa]

Having the same type mismatch error in regular windows 10. Can't click next or previous but everything else seems to work. Any ideas?

 

[PCSoldaat]

This happens to me all the time. Fix please.