Author |
Message |
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Sat May 10, 2008 5:43 pm Post subject:
|
|
|
elektro80 wrote: | Okdokey, I just sent you an email. It will be 2 sets for me. And I´m looking forward to seeing what will be on PCB 3. |
In the old version, I had 4 parametric filters x3 (for cello, viola and violin), with heaps of trimpots.
For the new version, I'm running the old filters thru a spectrum analyzer (visual analyser freeware, to be precise), and then re-create them with fixed filters (using FilterWiz and PSpice).
The resulting circuit should have less than 15 opamps probably, so I can make it part of my FFF PCB project. Maybe.
JH.
Now playing: Saga, Silent Knight _________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
Serenadi
Joined: Jul 03, 2007 Posts: 89 Location: Germany
|
Posted: Sat May 10, 2008 11:01 pm Post subject:
|
|
|
jhaible wrote: | I've just recorded two short demos with the String Filter prototype. |
Great, sounds amazing. Especially the arpeggio.
You convinced me.
Thanks. |
|
Back to top
|
|
|
robotmakers
Joined: Mar 12, 2008 Posts: 7 Location: NY, USA
|
Posted: Mon May 12, 2008 7:35 am Post subject:
Request for assembled string filter module |
|
|
Is there anyone on this forum (or elsewhere) who would be interested in building me a MOTM or Dotcom compatable String Filter module using JH's circuit boards? Please respond offline.
Thanks very much for your consideration,
Roger |
|
Back to top
|
|
|
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Tue May 13, 2008 4:38 pm Post subject:
|
|
|
And yet another demo:
Short OB-8 arpeggiated strings
http://www.jhaible.heim.at/string_filter/jh_string_filter_2008_3.mp3
1. Dry
2. 40-Band Filterbank and Cello-Filter breadboard circuit
3. Dry
4. 40-Band Filterbank only
I've also published the frequency response plots for this now:
http://www.jhaible.heim.at/string_filter/jh_string_filter.html
JH. _________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Mon May 19, 2008 3:32 pm Post subject:
|
|
|
What you're going to build ...
http://www.jhaible.heim.at/string_filter/jh_string_filter_sch.pdf
JH. _________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
norman phay
Joined: Jun 29, 2007 Posts: 176 Location: North-East England
Audio files: 1
|
Posted: Tue May 20, 2008 5:11 am Post subject:
|
|
|
Good grief! I thought I'd printed out an M C Escher artwork for a minute there. |
|
Back to top
|
|
|
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Tue May 20, 2008 1:24 pm Post subject:
|
|
|
Norman Phay wrote: | Good grief! I thought I'd printed out an M C Escher artwork for a minute there. |
It's not as bad as it looks.
JH. _________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Tue May 20, 2008 3:00 pm Post subject:
|
|
|
update
I've just placed my order at the PCB factory.
(I've ordered a few spares, too, so don't worry if you haven't placed your order with me yet.)
JH.
Now playing: Edgar Froese, Aqua _________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
Spratty
Joined: Oct 08, 2007 Posts: 43 Location: Australia
|
Posted: Wed May 21, 2008 4:12 am Post subject:
|
|
|
Is it possible to run this off an 18VAC powerpack JH?
Spratty |
|
Back to top
|
|
|
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Wed May 21, 2008 2:51 pm Post subject:
|
|
|
Spratty wrote: | Is it possible to run this off an 18VAC powerpack JH?
Spratty |
What is a powerpack?
You can run it from a 2x 16V ... 18V AC transformer, with primary and secondary fuses, and with big heatsinks on the voltage regulators.
Or, alternatively, from +/-15V stabilized DC.
JH. _________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Wed May 21, 2008 2:58 pm Post subject:
|
|
|
BOM (Bill of Materials)
http://www.jhaible.heim.at/string_filter/jh_string_filter_bom.pdf
Updated web site:
http://www.jhaible.heim.at/string_filter/jh_string_filter.html
JH.
Now playing: P. M. Hamel, Bardo _________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Mon Jun 02, 2008 11:03 pm Post subject:
|
|
|
I checked at the factory - production of the String Filter PCBs has now started!
JH. _________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
Stavros
Joined: Oct 30, 2007 Posts: 36 Location: Athens-Greece
|
Posted: Wed Jun 11, 2008 2:04 am Post subject:
|
|
|
Hello,
on the BOM list should VTL3C3 rather be VTL5C3?
Thanks
Stavros |
|
Back to top
|
|
|
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Wed Jun 11, 2008 2:17 pm Post subject:
|
|
|
Stavros wrote: | Hello,
on the BOM list should VTL3C3 rather be VTL5C3?
Thanks
Stavros |
VTL5C3. Sorry for the typo.
BTW, that vactrol is not really needed for the filterbank function.
It's an optional optoelectronic limiter.
JH. _________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
Stavros
Joined: Oct 30, 2007 Posts: 36 Location: Athens-Greece
|
Posted: Wed Jun 11, 2008 3:47 pm Post subject:
|
|
|
Hi again,
I have a problem sourcing the 3,9nF Polyester (MKH, MKT) capacitor.
Could that be replaced by a KERKO-500 ceramic one (reichelt has this).
Regards
Stavros |
|
Back to top
|
|
|
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Wed Jun 11, 2008 5:07 pm Post subject:
|
|
|
Stavros wrote: | Hi again,
I have a problem sourcing the 3,9nF Polyester (MKH, MKT) capacitor.
Could that be replaced by a KERKO-500 ceramic one (reichelt has this).
Regards
Stavros |
Yes, that's what I did, ceramic.
Another option would be to connect 1.2nF and 2.7nF in parallel.
Strange that 3.9nF has suddenly become a difficult value - apparently it's not just Reichelt.
JH. _________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Wed Jun 18, 2008 11:24 am Post subject:
|
|
|
String Filter boards arrived today.
And even though I had a needle adapter built this time (!) and had every board tested with it individually, I'll build another prototype from a pair of these production-run PCBs before I go and sell them.
So, don't pay anything yet before you have an invoice email sent to you, but expect this in the near future.
JH. _________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
fluxmonkey
Joined: Jun 24, 2005 Posts: 708 Location: cleve
|
Posted: Thu Jun 19, 2008 6:26 am Post subject:
|
|
|
whoo! |
|
Back to top
|
|
|
Inventor
Stream Operator
Joined: Oct 13, 2007 Posts: 6221 Location: near Austin, Tx, USA
Audio files: 267
|
Posted: Thu Jun 19, 2008 6:49 am Post subject:
|
|
|
This whole thingamajig going on here is an amazing example of OpAmp circuits gone insane! It's a beautiful music maker and it's a joy to see my very favorite component of all time, the OpAmp, glorified this way. Now, when do I get to ChucKify this beast? _________________ "Let's make noise for peace." - Kijjaz |
|
Back to top
|
|
|
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Thu Jun 19, 2008 10:08 am Post subject:
|
|
|
Inventor wrote: | This whole thingamajig going on here is an amazing example of OpAmp circuits gone insane! It's a beautiful music maker and it's a joy to see my very favorite component of all time, the OpAmp, glorified this way. Now, when do I get to ChucKify this beast? |
Oh, meanwhile the data are all there on my web site!
I thought you've started cloning it in software already.
JH. _________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
Inventor
Stream Operator
Joined: Oct 13, 2007 Posts: 6221 Location: near Austin, Tx, USA
Audio files: 267
|
Posted: Thu Jun 19, 2008 11:17 am Post subject:
|
|
|
jhaible wrote: | Oh, meanwhile the data are all there on my web site!
I thought you've started cloning it in software already.
JH. |
You told me to wait, so I did. The frequency plot helps a lot, but I didn't find the exact information I need which is: What is the center frequency and Q of each filter? With that Info i can quickly code something up! Thanks. _________________ "Let's make noise for peace." - Kijjaz |
|
Back to top
|
|
|
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Sat Jun 21, 2008 4:16 am Post subject:
Final tests |
|
|
Right from the lab - Tassilo my son is helping to test the string filter prototype.
And even though you don't hear much because of the sound "quality" of the Nikon's built-in mic - yes, it tested good.
PCBs ready for shipping - invoices will be in your mail soon.
JH.
Description: |
|
Download |
Filename: |
DSCN4552.MOV |
Filesize: |
6.78 MB |
Downloaded: |
1278 Time(s) |
_________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
softfin
Joined: Oct 11, 2006 Posts: 271 Location: Far in the north
Audio files: 1
|
Posted: Wed Jun 25, 2008 10:31 am Post subject:
|
|
|
Received the boards today, thanks a lot JH!
I'll probably attempt to do a stereo version that will be fitted in the same enclosure along with two Tau Pipe phasers, two Triple choruses and two Krautrock phasers. I'm planning to use just one power supply to power all these effects. How much mA would those eight effects approximately need? |
|
Back to top
|
|
|
jhaible
Joined: May 25, 2007 Posts: 2014 Location: Germany
Audio files: 24
|
Posted: Wed Jun 25, 2008 10:56 am Post subject:
|
|
|
softfin wrote: | Received the boards today, thanks a lot JH!
I'll probably attempt to do a stereo version that will be fitted in the same enclosure along with two Tau Pipe phasers, two Triple choruses and two Krautrock phasers. I'm planning to use just one power supply to power all these effects. How much mA would those eight effects approximately need? |
Hard to say - depends on so many things.
Certainly less than 800mA, probably a lot less than 500mA.
JH. _________________ "I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
|
Back to top
|
|
|
softfin
Joined: Oct 11, 2006 Posts: 271 Location: Far in the north
Audio files: 1
|
Posted: Wed Jun 25, 2008 11:08 am Post subject:
|
|
|
jhaible wrote: | softfin wrote: | Received the boards today, thanks a lot JH!
I'll probably attempt to do a stereo version that will be fitted in the same enclosure along with two Tau Pipe phasers, two Triple choruses and two Krautrock phasers. I'm planning to use just one power supply to power all these effects. How much mA would those eight effects approximately need? |
Hard to say - depends on so many things.
Certainly less than 800mA, probably a lot less than 500mA.
JH. |
Ok, thanks for the advice. Last edited by softfin on Thu Jun 26, 2008 1:42 am; edited 1 time in total |
|
Back to top
|
|
|
|