General :: Help W/ Custom Virtual Musical Instrument?
Jul 17, 2010
How would someone with very little programming experience go about creating a custom virtual musical instrument? Each key would produce a tone of a specified frequency when clicked. Instead of being limited to a piano keyboard layout, each key would be movable. Holding the Shift key would allow multiple keys to sound at once. (See attachment for what it might look like.)I know there are dozens of possibilities (Flash, Java, etc.) Which would be best?
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Jan 17, 2010
I'm trying to get audio from a keyboard into my computer. I have a 1/8' to 1/4' adapter, and I can hear the sound from the other end when I connect my earphones to the keyboard, but if I connect it to my computer's microphone port, it doesn't even recognize something connected there. Sound preferences tell me that there are two microphones connected (two built-in microphones), and so does Jack.How do I get it to detect the keyboard? I'm using Ubuntu 9.10 64-bit, if that's of any relevance.
[edit] I also tried connecting this computer to another computer (i.e. Speakers are connected to computer 2, a 1/8' cable goes from the speaker's earphone socket and into computer 1's microphone in). I expected the sound produced by computer 2 to go to computer 1 like regular microphone input would, but it still didn't detect anything and persisted in telling me that there are only two sound inputs on the computer.
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Sep 4, 2010
I'm trying to get audio from a keyboard into my computer. I have a 1/8' to 1/4' adapter, and I can hear the sound from the other end when I connect my earphones to the keyboard, but if I connect it to my computer's microphone port, it doesn't even recognize something connected there. Sound preferences tell me that there are two microphones connected (two built-in microphones), and so does Jack. How do I get it to detect the keyboard? I'm using Ubuntu 9.10 64-bit.
[edit] I also tried connecting this computer to another computer (i.e. Speakers are connected to computer 2, a 1/8' cable goes from the speaker's earphone socket and into computer 1's microphone in). I expected the sound produced by computer 2 to go to computer 1 like regular microphone input would, but it still didn't detect anything and persisted in telling me that there are only two sound inputs on the computer.
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Sep 23, 2010
I'm trying to get audio from a keyboard into my computer. I have a 1/8' to 1/4' adapter, and I can hear the sound from the other end when I connect my earphones to the keyboard, but if I connect it to my computer's microphone port, it doesn't even recognize something connected there. Sound preferences tell me that there are two microphones connected (two built-in microphones), and so does Jack.
How do I get it to detect the keyboard? I'm using Ubuntu 9.10 64-bit, if that's of any relevance.
[edit] I also tried connecting this computer to another computer (i.e. Speakers are connected to computer 2, a 1/8' cable goes from the speaker's earphone socket and into computer 1's microphone in). I expected the sound produced by computer 2 to go to computer 1 like regular microphone input would, but it still didn't detect anything and persisted in telling me that there are only two sound inputs on the computer.
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Feb 20, 2010
I am trying the wrap feature for the first time. I followed the instruction as mentioned in this link URl...but I am getting an error saying "undefine reference to __wrap_malloc.I followed all the steps, but the post was a decade old, I am sure something has changed? or am I missing something.
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Jun 21, 2010
I am a composer with no money whose old music computer and keyboard were destroyed in an accident. I can't afford to replace them. However, I still have 320+ gb of soundfonts that I would like to play on my 64-bit Ubuntu 10.04 machine. No composing now; I just want to play them on my computer keyboard. The trouble is, I can't find any native Linux app that works.
I used wine install the demo version of FL Studio 9, and I can play my soundfonts with it, but the latency is terrible. I have to set the latency to 65 milliseconds before I get anything but a stuttering mess.
I'd really like to use Virtual MIDI Piano Keyboard, but the sound doesn't work, and I'm not sure how to troubleshoot it. The System Testing detects my sound device as "DA-Intel - HDA NVidia HDA NVidia at 0xfe024000 irq 21"
since when does NVidia manufacture sound equipment? Is this a motherboard with integrated sound?
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Feb 1, 2010
I am looking for a program to extract a single instrument (guitar) for the purpose of learning to play it.
I don't care if it costs $ or not as long as it is native to UBUNTU 9.10 .
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Aug 11, 2010
I'm an italian student that's making a project for an exam of the university.I'm trying to install a usb driver to talk with an instrument that my profalso the drivers were given by my prof. the driver now I'm trying to install is called:libhid-0.2.12.origI've opened it and I have run the programm called configure.I had the same problem of Gabyx (in a topic in the section linux Programming & Scripting) but I think I've resolved it in the same way suggested by Lakerdonald....now after I run configure appears:
Code: configure: Using db2man stylesheet: /usr/share/kde4/apps/ksgmltools2/docbook/xsl/html/docbook.xsl
configure: creating ./config.status
[code]....
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Jun 29, 2010
I would like to configure and SAN disk. But I do not have a physical SAN disk. Is it possible to create and configure a Virtual SAN disk and work on it with virtual machines?I have around 400GB of space in my Laptop.
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Dec 28, 2009
Just spent three whole days barking up the wrong tree, solving Fedora 11 and Fedora 12 boot failures because the correct hypothesis was illogical: installation did not update/modify the initrd.
The first couple of times I installed Fedora 11 on the HighPoint Technologies RocketRaid 2640x4, the installation inserted my "custom" driver module (rr26xx) into the initrd, permanently, so that the system booted off the controller card for which the custom driver was inserted. (I yelled about this success in this thread: [url]
My most recent installs of BOTH F11 and F12 on the RocketRaid failed to properly set up the boot. It turns out that the "rr2640" module I "slipstreamed" into the installation process was *NOT* permanently added to the initrd by anaconda. (F12 gave me "no root device found boot has failed, sleeping forever", on boot; F11 hung also, without such error, I presume, during the init script execution). Because of limited resources and time, I only know for sure the module was missing from the F11 initrd, and am ASSUMING the same was the case with F12.
The only difference between the successful installs and the ones with failed boot is that the successful installs were made on a single-drive (JBOD) mode on the controller; whereas, the failed ones were placed on RAID 5. But, AFAIK, the created logical device for the card is "/dev/sda", in both cases, and the kernel can not distinguish between the two cases (or can it?). Thus, the inconsistency cost me a lot of time, and is still inexplicable to me.
Question: What is the best way to deal with custom drivers, today? There are custom spins, and many tools, like isomaster. Stupid question: Is there a way to modify the initrd inside an installer ISO -- be it for CD/DVD/USBboot drive -- beefing the init RAM disk with whatever modules you'd like, for the boot process (using, say, isomaster)?
And what makes anaconda understand that a module must be added to the initrd ? How can one force anaconda to do so?
How does moving to dracut as the initrd tool affect any/all of the above?
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Sep 1, 2011
I have installed the lmms-vst package (converted from a deb package) but I still not see the VeSTige Instrument in the Instrument plugins list. I really want to use VST plugins.
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Oct 24, 2009
Basically the computer will have to do nothing other than run some custom software that interfaces with the vehicle's systems via a USB FDTI board and render to an 8" touch screen via OpenGL. User input will be via the said touchscreen, and audio output will eventually come into the equation. The target vehicle(s) will be extensively modified for the project, and I'm hoping the software will eventually override features such as the immobiliser, so an extremely fast boot time will be essential.
I have one of those Via C7 fully integrated mini ITX motherboards, much of the onboard hardware will be useless besides two USB ports and a SATA port, so could be completely removed from the kernel if necessary to achieve a fast boot. If some BIOS hacking is required I'd happily look at that too. I'm a recently graduated software engineer, and can comfortably use Linux (I'm using openSUSE for developing the software) but don't have a clue where to start with the OS; if I should be downloading and modifying an existing distro or trying to build one from scratch somehow?
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Jul 10, 2010
I've been struggling this morning trying to associate an application with a custom protocol, namely emacsclient and org-protocol.
I'm calling this protocol from a webbrowser bookmarklet, and I get the following behaviour :
In chromium, the "Launch Application" dialog comes up, and calls xdg-open org-protocol://... which ends up firing a new chromium frame.
In firefox, I've tried setting network.protocol-handler.app.org-protocol to an empty string or my emacsclient path, anyhow I get the following error message : "Firefox doesn't know how to open this address, because the protocol (org-protocol) isn't associated with any program" without even showing any external application selection dialog.
I'm not using any desktop environment, so I need to make this work strictly with xdg, however, despite reading the shared mime info spec etc, I still can't fathom a working configuration.
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Jan 1, 2011
Is there a way to set a custom windows title in Linux?
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Apr 29, 2011
So I'm here thinking how to create custom commands on my Linux Debian? I mean so i could open up terminal and just type the script name (and possibly some arguments) and it would refer to the script in my home directory. Otherwise I've write the whole path to the script each time and it gets annoying.
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Oct 7, 2010
Had a custom kernel (2.6.35.5) running under Slackware 12.1 and also the same kernel on an Ubuntu 10.04 machine just fine, however after a clean install of Slackware 13.1 this kernel no longer works (This kernel was re-compiled with the same .config file under Slack 13.1) as I keep getting the the following: -Please append a correct "root=" boot option Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,3) The strange thing is it keeps looking for the root file system in hda1, however the stock 13.1 kernel finds it in /dev/sda1 so the root partition is /dev/sda1 in lilo and the harddisk is known as /dev/sda.
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Dec 25, 2010
Create a rpm that installs a script like hello.sh into /root/bin with the permissions 755? I've tried a few ways with rpmbuild but no luck.
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Sep 26, 2010
I know this isn't linux related but it is grub related.
I made my own small "32-bit protected mode" Operating System in Assembly.
The OS works great in qemu however I wanted to test it using real hardware.
I have a seperate HDD with grub installed into /boot/grub
In this folder I have:
Code:
Menu.lst:
Code:
The kernel is only 512 bytes. How can it be to big?!?
The only problem I am having it is says:
Code:
Kernel to big
And the kernel's format is "bin" if that makes any difference.
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Nov 21, 2009
Now that ive finally got XP and Ubuntu on my system, i thought id try to get rid of that DOS looking boot! :s
To explain my situation (probably default) when i start up after bios a black screen appears with a list of options:
1. ubuntu
2. ubuntu recovery
3. xp
4. xp recovery
something like that not sure the exact order or titles...
What i wanna do is make it have a GUI where i select which OS i want.
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Apr 18, 2011
I found that Linux Ubuntu has custom keyboard commands.his is awesome.What I'm trying to do, is make a command that will shut down the computer with a single button with no dialog windows.For you know, being grounded nd stuff.I found the command for it is "shutdown" with a few options.But when I tested it, being bound to pause/break, it did nothingAm I writing the wrong code, as I'm not using any options, or is this not possible?
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Sep 18, 2009
How can I add, a custom encoding to kde konsole? Is there any other way to do it, execpt recompilling the qt-3 ?
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Dec 29, 2010
when you log in through the terminal as root, you get a question if you want to apply the proxyconfiguration or not.
I have done this by changing the .bash_profile of the root-user:
Code:
I have adapted rsyslog with the following:
Code:
But it doesn't work. The messages have to be written to the logfile by using the logger-command.
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Feb 17, 2010
I don't really like Los Angeles (they steal all our water) and neither Tijuana nor Vancouver make sense to me, so I am trying to make my own, custom timezone of Felton, California. How do I do this? I changed my /etc/timezone to "America/Felton" but upon reboot my calendar still says "Los Angeles". Which files do I need to change?
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Jun 21, 2010
I am currently running a old school hacked Linksys WRT54G and have played around with some of the hacks and currently running Tomato on it and I am pretty happy (tho the lack of OpenVPN Server suck) but I need an upgrade to something with 802.11N and I bet I am not the only one. The options right now are
Grab a hackable consumer 802.11 Dual Band-N router and throw on it DD-WRT, OpenWRT or Tomato again Build my own using old hardware (dont really want to, feel they eat too much power for a simple task) Build/Buy hardware for a custom router (Atom system, or I recall back in the day some people use to sell small ATX-like boards just for embedded linux to run as a router) So what option would you go with and why? And if the DIY route should I try to get some hardware that is pre made for the job or DYI like a Atom machine.
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Sep 18, 2010
For example - when coding in Perl, I need to sometimes comment out a bunch of lines.What I do is something like
:80,96 s/^(.*)$/#1/
I want to create a custom shortcut for this so that I can do something like
:80,96 cm
for commenting and
:80,96 uc
for uncommenting.What should I put in my ~/.vimrc?
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Aug 19, 2011
I am doing this as a test for bigger deployment. I have Apache running on CentOS5 in a clean VM (just a few tools installed, PHP and such).If mod_ssl is set to listen on 443 in /etc/httpd/conf.d/ssl.conf the the site at https://192.168.1.137 loads just fine.If I change the listen port to eg. 9443 in ssl.conf and reload httpd the page wont load athttps://192.168.1.137:9443 - I set the eth0 to be trusted and disabled SElinux in case that was interfering but still no luck.
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Jul 9, 2011
Under Debian "Expert Installation" once I have chosen installation/system language and location, I get an informative notice, that:
Code:
There is no locale defined for the combination of language and country you have selected.
..and I need to choose one locale available for the selected language. As I understand, locale is just a set of environmental variables used by applications and printed out with locale command?
In addition, is it possible to generate own locale files after the installation, which will match my needs?
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May 30, 2011
I am looking to assign custom icons to my folders. Like the game folder having a joystick , Ebooks folder etc. but sadly i am unable to find any thing on google. Can any ome suggest some good places to look
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Dec 26, 2010
I have a custom command I've made to quickly shut down all of my xen instances.
Code:
[root@LCENT02 ~]# virtdown
-bash: syntax error near unexpected token `2'
As you can see it fails when I try to run it on the command line. It is stored in an ~/.env file in my home directory. What is odd to me is if I open the .env file and copy the command from there and paste it into the command line, it does actually work!
Code:
[root@LCENT02 ~]# for i in `virsh list | grep -v -e Id -e --- -e Domain-0 | awk '{print $1}'`; do virsh shutdown $i; done
Domain 1 is being shutdown
Domain 2 is being shutdown
Domain 3 is being shutdown
And this is how I have the command entered into my .env file:
Code:
alias virtdown="for i in `virsh list | grep -v -e Id -e --- -e Domain-0 | awk '{print $1}'`; do virsh shutdown $i; done
Why would this command work if you paste it onto the command line but not use the custom command virtdown?
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Jan 16, 2010
I am using uuntu 8.04 and I am trying to make live cd with running kernel. I know that there is documentation in ubuntu website in "how to make live cd" but the thing is this is my custom kernel. I have my own configuration. So I want this kernel to be work in live cd.
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