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  • Fan very loud in Ubuntu 12.10

    - by Jon
    I recently installed 12.10 on my Desktop PC, moving away from Windows 7. For some reason, the fan in my computer is making an enormous amount of noise (it is running at full speed constantly). Under Windows 7, the fan would slow itself down and run at an acceptable noise level. Now, it is nearly unbearable. Checked the processes, and none are taking up a huge load on the CPU. Please help as I really can't endure this noise, and I do not want to go back to Windows 7 on this box. Some specs: - Intel 2.26 duo core - ATI 4870 - 4GB - 650W power supply

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  • iPhone SDK: How to record voices with ambient noise supression?

    - by Harkonian
    Can anyone point me in the right direction on how I would minimize ambient noise while recording someone speaking using the iPhone SDK Core Audio? I'm guessing a band-pass filter that eliminates any frequencies above and below the human vocal range might work. I have no idea how I would implement band filters on audio in the SDK though. The optimum solution would be one that eliminates the noise from the stream before it is written to memory/disk. Some sample code would be appreciated.

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  • The How-To Geek Guide to Audio Editing: Basic Noise Removal

    - by YatriTrivedi
    Laying down some vocals?  Starting your own podcast?  Here’s how to remove noise from a messy audio track in Audacity quickly and easily. This is the second part in our series covering how to edit audio and create music using your PC. Be sure to check out the first part in the series, where we covered the basics of using Audacity, and then check out how to add MP3 format support as well Latest Features How-To Geek ETC HTG Projects: How to Create Your Own Custom Papercraft Toy How to Combine Rescue Disks to Create the Ultimate Windows Repair Disk What is Camera Raw, and Why Would a Professional Prefer it to JPG? The How-To Geek Guide to Audio Editing: The Basics How To Boot 10 Different Live CDs From 1 USB Flash Drive The 20 Best How-To Geek Linux Articles of 2010 Take Better Panoramic Photos with Any Camera Make Creating App Tabs Easier in Firefox Peach and Zelda Discuss the Benefits and Perks of Being Kidnapped [Video] The Life of Gadgets in Price and Popularity [Infographic] Apture Highlights Turns Your Cursor into a Search Tool Add Classic Sci-Fi Goodness to Your Desktop with the Matrix Theme for Windows 7

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  • Loud and annoying noise on login

    - by searchfgold6789
    I have a PC with Kubuntu 13.10 64-bit on it. The problem is that whenever I log in (automatic log in is enabled), there is a loud double-click noise that sounds from the speakers whether the volume is muted or not. I have two sound cards; the motherboard audio, which is disabled in the BIOS, and the Creative! Labs Sound Blaster X-Fi SB0460, which I have normal speakers plugged into. Does anyone know how to fix this? Relative lspci lines: 00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] BeaverCreek HDMI Audio [Radeon HD 6500D and 6400G-6600G series] 02:05.0 Multimedia audio controller: Creative Labs SB X-Fi Using default Phonon backend. (I am not really sure what other information to provide, but will gladly edit in anything upon request.)

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  • Graphics problems: noise-like glitch, and screen freezes in Ubuntu 13.04

    - by user207253
    I have recently upgraded to 13.04 and am using unity. I am experiencing two intermittent problems with the graphics: 1) All or part of the screen is taken up by 'noise', which lasts for about a second, see screenshot: 2) The launcher panel freezes. I can still move the mouse and the keyboard responds to function keys (I can dim the screen), but I cannot select anything. At the moment I recover by ctr-alt-f1, and restarting lightdm. My computer is a Samsung Chronos 7 laptop, model NP700Z5C, with Intel HD 4000 graphics The same problems occur with lightdm and gdm. I have attempted to install the intel drivers (as the screenshot hints) but these are not indicated as additional drivers in software & updates so I'm not sure whether they are in use. Any suggestions?

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  • Using a permutation table for simplex noise without storing it

    - by J. C. Leitão
    Generating Simplex noise requires a permutation table for randomisation (e.g. see this question or this example). In some applications, we need to persist the state of the permutation table. This can be done by creating the table, e.g. using def permutation_table(seed): table_size = 2**10 # arbitrary for this question l = range(1, table_size + 1) random.seed(seed) # ensures the same shuffle for a given seed random.shuffle(l) return l + l # see shared link why l + l; is a detail and storing it. Can we avoid storing the full table by generating the required elements every time they are required? Specifically, currently I store the table and call it using table[i] (table is a list). Can I avoid storing it by having a function that computes the element i, e.g. get_table_element(seed, i). I'm aware that cryptography already solved this problem using block cyphers, however, I found it too complex to go deep and implement a block cypher. Does anyone knows a simple implementation of a block cypher to this problem?

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  • Remove noise from a recording

    - by essamSALAH
    I used to record important technical meetings and demos using Camtasia Studio, using a Mic to capture the speaker voice. Sometimes we invite attendees by asking them to call us in the meeting, and they would call on a cell phone then we switch it to loudspeaker so we can hear and talk to them and also record the conversation on Camtasia. The problem I am having now is that playing back those recording produces the regular noise that results from the microphone being close to the mobile phone (the kind of noise you hear when your mobile phone rings and it is near a speaker). Any advice on removing this noise?

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  • Dell N7110 i7 overheats and doesn't boot when anything is plugged into the USB3 port

    - by Kostyantyn
    When i plug in any devices (mouse, keyboard) into usb 3.0 system dell n7110 overheats and fan goes crazy with terrible noise. So i'm using 1 usb 2.0 slot now with a usb hub. It doesn't solve the problem completely but system stays at a low fan rate for a longer time. I've tried to lower CPU frequency, but in my case (DELL INSPIRON N7110 i7 on Linux 3.0.0-14-generic #23-Ubuntu SMP Mon Nov 21 20:28:43 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux) CPU was pretty cool (51 C) and still the same horrible fan noise. Looks like there is no such problems with ubuntu 10.04 (but there're some other problems). Ubuntu even doesn't boot if anything is plugged into usb 3.0

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  • How to tile multiple procedurally generated textures?

    - by Burhuc
    I'm trying to develop a procedural tile generator for a game, mostly for the ground tiles, instead of using "hand-drawn" tiles. To achieve this I'm using Perlin noise and a sine wave with multiple parameters, which already gives me pretty nice results. I don't want to generate 1 tile and repeat that one forever for one ground type, but I want to avoid recurrences, so I'm generating n different tiles. The problem I'm having now is that I want to tile the generated textures (smooth transitions). At the moment I have this: 4 256x256 textures. I thought a simple method would be to just add the positions of the different tiles to the noise generation algorithm, so that, when creating the 4 256x256 textures, it would behave like it would create a 512x512 texture, but that somehow didn't work as intented. So how can I tile those textures?

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  • Z600 Workstation ACPI Fan Noise

    - by dpb
    Hi -- I have an HP z600 workstation that has the FAN running full when idle. In fact, after the boot, the fan never slows down or varies. I looked in dmesg, and noticed this: [ 1.516778] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS [ 1.516781] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS [ 1.516786] ACPI: Marking method _OSC as Serialized because of AE_ALREADY_EXISTS error [ 1.519868] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS [ 1.519872] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS [ 1.624638] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS [ 1.624642] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS [ 1.624726] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS [ 1.624729] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS [ 1.624802] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS [ 1.624805] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS [ 1.624895] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS [ 1.624898] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS [ 1.624977] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS [ 1.624981] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS [ 1.625070] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS [ 1.625074] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS [ 1.625153] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS [ 1.625157] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS Anyone know what could be done to fix this?

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  • Hearing a clicking noise from soundcard all the time

    - by Mehrdad
    I have installed Fedora 17 on my laptop. A few days ago I updated my fedora (but not upgraded). I shut down my computer and since the next time I turned it on I am hearing a clicking noise all the time from speakers. Even when I plug my headphones in I hear the noise through the headphone. I surfed over the internet and found the following shell commands: su -c 'echo "options snd_hda_intel power_save=0" /etc/modprobe.d/snd_hda_intel.conf' su -c 'echo 0 /sys/module/snd_hda_intel/parameters/power_save' I tried them but they didn't work. Here is the part of "lspci" command related to my sound-card: 00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 03) I have to add that my sound-card is working and I can play some audio file, I mean I can hear the voice and noise simultaneously. But everything is OK in windows xp which is also installed on my laptop. Could it be related to the sound-card driver? If so, how can I revert it to the previous version?

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  • Hard drive clicking noise on Acer AO722

    - by Blank
    I'm running Ubuntu 11.10 on an Acer Aspire One 722. Whenever I'm on battery power I get a clicking sound from my hard drive every 5 seconds or so (this does not happen when the laptop is plugged in). I'm dual booting with Windows 7 and I don't get the clicking sound in Windows. The clicking sound stops when I run the command:sudo hdparm -B 254 /dev/sda Also, according to:sudo smartctl -H /dev/sda my hard drive is healthy. Is this clicking sound something I can just ignore? Or is it a serious problem and will it eventually damage my computer? If so, how would I fix it? I have tried adding hdparm -B 254 /dev/sda to my /etc/rc.local file, but I still run into the clicking problem if my computer boots while plugged in and is then unplugged. Also, I'm finding this fix to be unreliable. Sometimes it works, sometimes it does not. Is this a good solution and is there a better way of doing this? Also, would running my laptop with a -B value of 254 have any negative effects? (I read somewhere about a lower level protecting the hard drive from bumps)

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  • Ultra high pitched noice coming from computer

    - by user11177
    It happened twice today, first a few minutes after turning on the computer (stopped by itself after a few minutes), then several hours later after I had turned my computer off, it started emitting a faint, ultra high pitched noise. The noise is not very loud, and almost to high pitch to be audible, but definitely noticeable for my ears. I sleep in the same room as my computer, so at first I was confused when I had just turned it off and started hearing the noise, so I went out of the room to check if the noise was in my head, but no it was definitely coming from the comp. It stopped when I turned it back on. What can be the possible causes for this phenomenon? How can I fix it?

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  • C# XNA: Effecient mesh building algorithm for voxel based terrain ("top" outside layer only, non-destructible)

    - by Tim Hatch
    To put this bluntly, for non-destructible/non-constructible voxel style terrain, are generated meshes handled much better than instancing? Is there another method to achieve millions of visible quad faces per scene with ease? If generated meshes per chunk is the way to go, what kind of algorithm might I want to use based on only EVER needing the outer layer rendered? I'm using 3D Perlin Noise for terrain generation (for overhangs/caves/etc). The layout is fantastic, but even for around 20k visible faces, it's quite slow using instancing (whether it's one big draw call or multiple smaller chunks). I've simplified it to the point of removing non-visible cubes and only having the top faces of my cube-like terrain be rendered, but with 20k quad instances, it's still pretty sluggish (30fps on my machine). My goal is for the world to be made using quite small cubes. Where multiple games (IE: Minecraft) have the player 1x1 cube in width/length and 2 high, I'm shooting for 6x6 width/length and 9 high. With a lot of advantages as far as gameplay goes, it also means I could quite easily have a single scene with millions of truly visible quads. So, I have been trying to look into changing my method from instancing to mesh generation on a chunk by chunk basis. Do video cards handle this type of processing better than separate quads/cubes through instancing? What kind of existing algorithms should I be looking into? I've seen references to marching cubes a few times now, but I haven't spent much time investigating it since I don't know if it's the better route for my situation or not. I'm also starting to doubt my need of using 3D Perlin noise for terrain generation since I won't want the kind of depth it would seem best at. I just like the idea of overhangs and occasional cave-like structures, but could find no better 'surface only' algorithms to cover that. If anyone has any better suggestions there, feel free to throw them at me too. Thanks, Mythics

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  • Having troubles with LibNoise.XNA and generating tileable maps

    - by Jon
    Following up on my previous post, I found a wonderful port of LibNoise for XNA. I've been working with it for about 8 hours straight and I'm tearing my hair out - I just can not get maps to tile, I can't figure out how to do this. Here's my attempt: Perlin perlin = new Perlin(1.2, 1.95, 0.56, 12, 2353, QualityMode.Medium); RiggedMultifractal rigged = new RiggedMultifractal(); Add add = new Add(perlin, rigged); // Initialize the noise map int mapSize = 64; this.m_noiseMap = new Noise2D(mapSize, perlin); //this.m_noiseMap.GeneratePlanar(0, 1, -1, 1); // Generate the textures this.m_noiseMap.GeneratePlanar(-1,1,-1,1); this.m_textures[0] = this.m_noiseMap.GetTexture(this.graphics.GraphicsDevice, Gradient.Grayscale); this.m_noiseMap.GeneratePlanar(mapSize, mapSize * 2, mapSize, mapSize * 2); this.m_textures[1] = this.m_noiseMap.GetTexture(this.graphics.GraphicsDevice, Gradient.Grayscale); this.m_noiseMap.GeneratePlanar(-1, 1, -1, 1); this.m_textures[2] = this.m_noiseMap.GetTexture(this.graphics.GraphicsDevice, Gradient.Grayscale); The first and third ones generate fine, they create a perlin noise map - however the middle one, which I wanted to be a continuation of the first (As per my original post), is just a bunch of static. How exactly do I get this to generate maps that connect to each other, by entering in the mapsize * tile, using the same seed, settings, etc.?

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  • HP Photosmart 7450 Prints Noise On Windows 7 Pro 64-bit

    - by David Mackintosh
    I have received a working (in its last location) HP Photosmart 7450 printer. I connected it up to my Windows 7 Pro 64-bit workstation, and the driver was (apparently) installed. The problem is that whenever I try to print from it -- test page, text from notepad, picture, whatever -- it spins through a half dozen sheets of paper, some of which have fractions of text on them, but most of which are either blank or have line noise printed on them. Noise similar to what was printed out on ye olde laserjet printers when the postscript interpreter failed. HP's web site only has a "use the included driver in Windows 7, be happy" instruction. The driver has been removed and added several times. The printer was previously attached to a XP Home computer and worked correctly without incident. Does anyone have any ideas for troubleshooting before I drop this printer in the river?

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  • 2D Tile Game - Smooth Biome Terrain Transitions

    - by Cyral
    While working on my 2D tile based game, I encountered a problem. I use Perlin Noise to generate the terrain. Some biomes (Desert, Forest, etc) have different flatness values depending on terrain, which causes the end/start of a new biome to have a big cliff because the terrain is different. When 2 biomes have the same flatness, they are fine, but if they are different, this can happen. Is there any way to keep this from happening? Example (In programmer art)

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  • Saving a list of points into a text file

    - by dylanisawesome1
    I recently posted a question about this, but was not really sure where to go. I've gotten some progress, and have generated some simple noise here: http://pastie.org/5408655 That works well enough for me, but I would really like to be able to save the points into an ascii text file. currently it's formatted so that something like this: http://pastie.org/5409311 would create a square. I need to save in this format with the points(and lines connecting them) generated in the method above. Essentially, I need to write the array of points created in the first example to a text file formatted like the second example.

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  • Noise when I try to convert flac to mp3 using vlc

    - by Josef
    I'd like to convert my flac files to mp3s using vlc and it's Media-Convert/Save function. The destination file is written but only contains awful noise. I've tried most of the predefined profiles (mp4, wav, etc.) and all of them seem to yield the same result. What's wrong?

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  • How do i remove extra noise from word documents

    - by oo
    I am reading a Microsoft word document 2007 and i keep seeing all this extra noise in the document. For example: Instead of seeing a link to google, i will see: {HYPERLINK http://www.google.com} Instead of seeing table of contents, i will see {TOC \0 1-2} any idea whats going on?

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  • Computer doesn't start up apart from lights/noise

    - by Casebash
    One of my computers doesn't boot up or at least nothing appears on my screen (not even the bios). It still makes some noise and the lights stay on, but not any beeping like I have heard computer make when start up fails. Before this happened my screen would occasionally have a strange image appear than crash (usually around startup). It would also sometimes just freeze without the image appearing. Any suggestions for how I can attempt to identify the problem?

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  • CPU fan making noise. plz suggest

    - by user32185
    CPU fan is making noise ...i figured out reasons: Cable coming out of fan is vibrating ... And may be also CPU fan is loose causing vibration... suggest options... i cleaned the fan ...but found that there is no heatsink compound /paste between processor and the fan..is it ok . My processor is p4 2.4 ghz motherboard intel 845 gvsr

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  • ASUS EeePC 1001PX, hard disk clicking in Ubuntu Maverick

    - by MeanEYE
    I just received my new Asus EeePC 1001px netbook. After installing Ubuntu 10.10 on it, I've noticed that my hard drive is making a clicking noise. Now this is not a loud clicking noise nor it's constant (only sounds occasionally and when hard disk is not writing or reading anything). Another strange thing is, this only happens when netbook is using battery power, the moment I plug in AC power clicking stops. Additionally I noticed that when I go into BIOS I can hear the click only once, same thing happens if I boot Ubuntu from USB. That led me to believe the problem is within operating system. I did all the surface scans and SMART tests and everything seems to be fine. Now noise sounds like heads are trying to "park" themselves so I tried disabling "spin down" option in Power Management but it didn't help. Any idea?

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