This isn't really a programming question per se, but it is related. I'm looking for the instructions on how to install FMOD.
I want to do extra credit for my computer graphics assignment - sound effects. A teammate wants me to go with something simple, and he suggested that I use FMOD Ex. (If you guys can think of something better, do suggest it, but so far FMOD looks more promising compared to SDL, OpenAL, etc.)
Right now I'm having a really hard time finding the instructions for installing the latest version of FMOD (audio content creation tool) on Linux Ubuntu 12.04 LTS (32-bit) so that I can use it in g++ with OpenGL. I checked out this YouTube video: http://www.youtube.com/watch?v=avGxNkiAS9g, but it's for Windows. Then, there is a Ubuntu Forums thread which redirected me to this page: https://wiki.debian.org/FMOD, and it has some dated instructions. I've downloaded FMOD Ex v. 4.44.24, which I believe is the latest version. Now I'm looking at eight libraries: libfmodex.so, libfmodex64.so, libfmodex64-4.44.24.so, libfmodex-4.44.24.so, libfmodexL.so, libfmodexL64.so, libfmodexL64-4.44.24.so, libfmodexL-4.44.24.so ... not knowing what to do. I've looked everywhere I could think of: here, YouTube, Google, Ubuntu forums, ... and came up with zilch. I can't think of any other place to ask this question.
If you do know how to install FMOD off the top of your head, drop me a line.
Please help. Thanks in advance.
Copy the .so files in /usr/local/lib/, the header files in /usr/local/include/fmodex/, and you're good to go.
Related
I am developing a code for transmission and reception of a txt file using fec correction and qam modulation. The main problem is in transmission it only send one character or nothing just for a second and then get freeze. It's the first time that i used GNU radio and i don't know what caused this problem can you check the code in the images below and tell me what it could be and how to solve this. If i am doing something wrong please tell me.
Sorry, I don't have the range to post images so instead that I posted links.
This is for TX
Txcode1
Txcode2
This is for RX
RXcode1
RXcode2
You're using an outdated version of GNU Radio, and within that, you're using the explicitly deprecated Packet Encoder, which randomly drops data. Don't do that, you had to pick that block from a category called "Deprecated" for a reason.
Also, it looks like you're using Throttle together with hardware. That doesn't work, and GRC also explicitly tells you it's a bad idea – you should pay attention to the console output in the lower left, it contains useful information!
So, don't start a new project on GNU Radio 3.7; GNU Radio 3.8 or 3.9 is trivial to install from Linux distro sources on any modern Linux Distro, and on Windows, you can use the excellent anaconda installer method.
Afterwards, orient on the examples that come with GNU Radio (installed, typically, under /usr/share/gnuradio/examples) in the digital subfolder. packet_loopback and other files will be good examples to learn from!
Other than that, make sure you've clicked on the "Get Started" button on gnuradio.org, and followed the tutorials up to the point of the PSK transmission tutorial. This should be a good entry to exactly what you're doing.
I wanted to install the OV7251 camera driver to work with a module I've recently purchased, the Arducam OV7251 MIPI, as I need to perform SLAM-like system called Virtual Inertial Navigation (VIN) and global shutter cameras are preferred for this. As far as my system goes, I'm using ROS Kinetic on an RPI-3B+ running Ubuntu 16.04 . I am using this camera as it is near my price point (<20$), and goes through the RPI's CSI Port, which sources say is easier and faster than ones going through USB.
I wanted to take this camera and publish its data to a topic, that way the repository I'm using for VIN, OpenVINS, can track the camera's position. Now, the camera that I'm using doesn't have much on it other than the manufacturer's github page, which does not work on Ubuntu, and cannot connect to ROS. Now, I'm decently inexperienced with RPI's, ROS included, since I wanted to originally perform this on an Arduino, but that was majorly impossible, so I doubt I would be able to write a simple ROS node, let alone one that connected with the CSI port.
Currently, I am unable to find many libraries for this, and help given to me has proved to be un-substantial. The camera does not natively have drivers supported on RPI, which is why I cannot find any /dev/video libraries, cheese turns up nothing, and the command $ Vcgencmd get_camera returns no detected devices. Someone suggested kernel hacking, in order to enable the module in menuconfig using libraries like the ones here. While I do not know much about kernel hacking, he reccomended that I follow this guide and after I run the defconfig line, I should search for "OV7251" in menuconfig and modularize the only one which popped up. And despite flashing and repeating this process multiple times to ensure I did not choose the wrong branch, the rpi-5.4.y branch, or wrong model, the RPI-3B+, I ended up being stuck on the rainbow screen after I rebooted every time. I know that the rainbow screen either means low power, which it wasn't because I had it run before, or a kernel error, which would most likely make sense.
Now, while I would most definitely like to fix the rainbow screen error, I would also like to know, how after installing the OV7251 driver, how do I get it working with ROS to send data to topics? Since I doubt I could write my own node, is there a library that I could look for to perform this, or would libraries that did not work previously due to a missing driver suddenly work now, or would I have to take an existing one and modify it? In any case, A more low-level tutorial to accomplish this would be quite handy seeing as I am new.
But, in the case this is not software, and the reason this camera is not supported is for good reason, is there any other cheap global shutter camera I can work with? I couldn't seem to find many over my various searches, but maybe you all have better luck/experience in this field. Although, I did manage to find another library by this same manufacturer which happens to support my camera model and even has a ROS node that works on ubuntu. However, I believe that if this can be done, then so can doing so by just the CSI port rather than buying an additional 40$ USB camera hat for the pi, and along with that, I am starting to doubt the validity of this companies repositories.
Yet the fact I am finding little information on the topic of this camera alone on the CSI port of an RPI and how renowned this company it scares me that it could be impossible, which if it is, do link me some other good and hopefully well-documented cameras, which could very well be a lot to ask for. And if it is just simply impossible to get the results I want with the parameters I have set, then how badly would a rolling shutter camera affect VIN'S performance, and furthermore is there any special dataset designed for rolling shutter which could minimize the drop in quality? This terrain is all too new to me.
Ok, so I got a rpi engineer to add a dtoverlay for the ov7251 in the rpi's firmware, and the most recent rpi-update has the overlay in the kernel.
I did sudo rpi-update to install the update, i then added dtoverlay=ov7251 to /boot/config.txt in order to enable the overlay, and i edited it by running sudo nano /boot/config.txt. And the repository only has one dependency, v4l-utils, which is installed easily enough by running sudo apt-get install v4l-utils. Finally i ran sudo reboot to initialize the changes.
And in order to pull the images into ROS, i edited a v4l2 node called usb_cam in order to accept the pixel format that the ov7251 camera uses (Y10). My fork can be found here. In order to install it, (since the docs for the original repo say very little on installation), i ran:
cd ~/catkin_ws/src
git clone https://github.com/ai-are-better-than-humans/usb_cam.git
cd ..
catkin_make
and then after that all you have to do is roslaunch usb_cam usb_cam-test.launch to start the node. Mine started out dark, so i had to go into the launch file and mess around with the brightness for a bit. And while youre there, make sure the pixel_format parameter has a value of Y10
You should get a sensor_msgs::Image message being published to a topic named "<camera_name>/image_raw", you can run rqt_graph to visualize it. Big thanks to 6by9 over at raspberry pi forums, dont think i could have gotten it done without him, he did alot of work that im very thankfull for. Thought id share the knowledge back here in case anyone finds it usefull.
EDIT: I hear you can also compile with catkin_make --pkg usb_cam -DCMAKE_BUILD_TYPE=Release instead of catkin_make if the node takes too much CPU. Also, if you see a ton of error messages while compiling, its fine, it still should work, but if you want to get rid of them you can refer to this answer from a ros thread:
It looks like you need to install libavcodec. I don't know the exact
command to install it off the top of my head, but the format will look
like this:
sudo apt-get install libavcodec
The exact package name might not be
libavcodec. It maybe looks something like libavcodec-VERSION-NUMBER or
libavcodec-dev. In these situations you can search for packages with a
command like this:
apt-cache search libavcodec
This will find all packages that have text
containing "libavcodec". This should find the correct package for you
to install.
I'm toying around with constructing a basic music composition system for fun. I can represent music in memory, but I'd (obviously) like to be able to output actual sounds! I don't really care what the format is (MIDI, mp3, ogg, whatever). I just want to be able to load samples into the program and play them in the simplest way possible. I've searched around for a solution but everything I'm seeing is either a) too complex (overhead-wise) for my needs, b) not actively supported, or c) not well-documented. I would love to see an example of sound output or otherwise, some direction on the simplest way to do so.
You might like Euterpea, which isn't on Hackage but was a breeze to install and has quite verbose documentation (it seems it forms the core of an introductory Haskell course at Yale). Hover over the word "Euterpea" in the menu at the top to find more links/instructions.
I ended up using MIDI and sending events to SimpleSynth, on Mac OSX. This was achieved using the hmidi package and the bindings to OSX's CoreMIDI by bkomuves. I had to install a fork of the hmidi package from here to get it working with the latest GHC. I then installed SimpleSynth and enabled an IAC Driver using the Audio MIDI Setup utility on OSX. I then set SimpleSynth to listen from the IAC Driver I set up and was able to use the enumerateDestinations function from bkomuvres' bindings to CoreMIDI to grab the first available Destination and send MidiEvents from hmidi using send. It works like a charm!
With Haskell, you may wish to get a handle on the language fully by utilising other libraries/applications from your code, however the following link is a link to libraries for music and sound.
http://www.haskell.org/haskellwiki/Applications_and_libraries/Music_and_sound
Another idea is to gain familiarity with OpenAL with C/C++ and then from there you will have some familiarity with the structure of HOpenAL (Haskell binding of OpenAL which indeed calls the OpenAL DLL/SO).
Link with straightforward tutorial for OpenAL ago!
http://enigma-dev.org/forums/index.php?topic=730.0;wap2
I hope this helps...
I use gnome-terminal (Ubuntu 10.10). I like it, though I'd be willing to switch to another for this feature.
Can anyone tell me how I can broadcast keystrokes to multiple windows? The closest thing I've found is the "Terminator" program, which allows for broadcasting to multiple tabs, but not to multiple windows. Apparently a similar feature was removed from v3 of Konsole when it went to v4 (no idea why). There are also similar capabilities in screen, but not between windows, as far as I can tell.
I've spent a number of hours looking, but no joy.
I'd also be willing for a general solution (input to multiple windows of any kind) that I could adapt for use with terminal windows.
Thanks.
Try with a software called keyboardcast: apt-get install keyboardcast
For the source: http://web.archive.org/web/20100130104001/http://desrt.mcmaster.ca/code/keyboardcast/
Is there a mature library that could enable audio input and output and work within Haskell? (A nice wrapper is fine, of course.)
I'm looking for something that can easily capture microphone input and, perhaps, play various audio files as well.
easily capture microphone input and, perhaps, play various audio files as well..
It will strongly depend on your OS platform: there are standard C libraries for this functionality on each OS, and you'll be looking for Haskell bindings to them (e.g. PulseAudio, etc). Look in the Sound category on Hackage:
http://hackage.haskell.org/packages/archive/pkg-list.html#cat:sound
E.g. HSndFile for audio file writing, http://hackage.haskell.org/package/HSoundFile
the module pulse-simple exposes bindings to capture sound from the microphone, see the second example at the top of the page;
https://hackage.haskell.org/package/pulse-simple-0.1.13/docs/Sound-Pulse-Simple.html
pulse audio libraries required by cabal are obtainable via cygwin (search "pulse" in the cygwin installer).
there is a also binding to sox, which looks promising.
https://hackage.haskell.org/package/sox
im sure there are other api wrappers to be found in hackage sound category.
for linux there is a binding to jack, has "unix" as a dependency, it WILL NOT build on windows...
Just in case you're not familiar with hackage: http://hackage.haskell.org/packages/archive/pkg-list.html
It looks like there is some audio-related stuff there. Not sure if there is anything that will meet your needs. But most "mature" haskell libraries will be there.
You can do it with OpenAL and ALUT. I managed to install both on Windows 8, although it wasn't exactly effortless; ALUT requires the underlying C library to be compiled manually into a DLL.
Installing OpenAL - on the other hand - is as simple as downloading the SDK and typing cabal install OpenAL in the command prompt.
With ALUT, you can create OpenAL buffers from audio files (including WAV) and memory views.
I found an example of recording and audio playback here. It should be fairly straightforward to adapt the code to your needs.
Let me know if I left something out and I'll try to elaborate.