Search found 11 matches

by Alain Lambert
Tue Sep 08, 2020 3:20 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Anyone able to have a quick check here???
Replies: 4
Views: 959

Re: Anyone able to have a quick check here???

What I do is tap and record the back. It should confirm if 230 is the right peak for T(1,1)3. The back tap willl be close to the T(1,1)3
by Alain Lambert
Mon Jun 29, 2020 6:08 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Spectrum Analyser
Replies: 4
Views: 4414

Re: Spectrum Analyser

LSA is now available for Mac users. You can find a copy Here: https://drive.google.com/drive/folders/1oGqALjZbIEzcvmBvFxp87wma6DI_mu6z?usp=sharing Please consult the readme file for instructions. This has not been tested intensively, please report any problems. The windows version is still available...
by Alain Lambert
Wed May 06, 2020 12:18 am
Forum: Instrument Builders Forum
Topic: Help reading flamenco tap tone data
Replies: 12
Views: 2843

Re: Help reading flamenco tap tone data

I have no idea how a Flamenco spectrum should look. But based on your numbers and the back tap, I would say the T(1,1)3 is that little bump around 217 Hz. It look like the back is not contributing much to the top resonance.
by Alain Lambert
Tue May 05, 2020 4:54 am
Forum: Instrument Builders Forum
Topic: Help reading flamenco tap tone data
Replies: 12
Views: 2843

Re: Help reading flamenco tap tone data

If you record a tap of the back this will give you an aproximation of where the T(1,1)3 is.
by Alain Lambert
Mon Apr 27, 2020 10:50 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Monopole mobility for ukuleles?
Replies: 2
Views: 1138

Re: Monopole mobility for ukuleles?

If you like "science building" make sure you visit https://ukuleles.com/
by Alain Lambert
Tue Apr 21, 2020 9:05 am
Forum: Instrument Builders Forum
Topic: Newbie trying to shift frequencies
Replies: 5
Views: 1748

Re: Newbie trying to shift frequencies

I just did that recently on a 000. You need to reduce top stiffness. Your best bet is reducing the X brace height. Here is a spectrum of the original : 000 top.jpg The next chart show how it changed after 1, 2, 3, carving session of the braces. Notice that the air mode did not changed much as this i...
by Alain Lambert
Tue Apr 07, 2020 11:51 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: having a go at spectrums
Replies: 11
Views: 2782

Re: having a go at spectrums

You can try my software Luthier Spectrum Analyser (free Demo). It is already setup for luthier usage. There is a windows version here: https://drive.google.com/open?id=1X4FSJKr_xdisqzpeUNJYVBuAeHgzvdnP I have also a Mac version, but this is still a Beta version. It need more testing (looking for tes...
by Alain Lambert
Sat Dec 14, 2019 6:13 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Spectrum Analyser
Replies: 4
Views: 4414

Re: Spectrum Analyser

Update: I have made several additions/improovments to LSA. It now come with an installer , which may make things easier for some. The "sound shape" graph is now saved with the spectrum. The cursor now show the frequency in the status bar, the decay/duration can be measured with a left click, Etc. Yo...
by Alain Lambert
Wed Nov 13, 2019 1:12 am
Forum: Instrument Builders Forum
Topic: fretboard radiusing router bits
Replies: 18
Views: 5996

Re: fretboard radiusing router bits

56nortondomy wrote:
Tue Nov 12, 2019 4:49 pm
I'd like to see how you do it too Steve.
Wayne
+1
by Alain Lambert
Mon Apr 08, 2019 10:30 am
Forum: The Gallery
Topic: Blackheart Sassafras Tenor
Replies: 6
Views: 5189

Re: Blackheart Sassafras Tenor

Beautifull instrument, well done, congratulation.
This is a 14 frets to the body. Did you change the scale length or just moove the bridge?
by Alain Lambert
Fri Apr 06, 2018 2:44 am
Forum: Instrument Builders Forum
Topic: tone
Replies: 5
Views: 3024

Re: tone

Could be the bridge or the NUT or a bad string.
I would start with the nut. Make sure the string contact point is at the very edge of the front of the nut and not at the back.