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  • Logarithmic spacing of FFT subbands

    - by Mykel Stone
    I'm trying to do the examples within the GameDev.net Beat Detection article ( http://archive.gamedev.net/archive/reference/programming/features/beatdetection/index.html ) I have no issue with performing a FFT and getting the frequency data and doing most of the article. I'm running into trouble though in the section 2.B, Enhancements and beat decision factors. in this section the author gives 3 equations numbered R10-R12 to be used to determine how many bins go into each subband: R10 - Linear increase of the width of the subband with its index R11 - We can choose for example the width of the first subband R12 - The sum of all the widths must not exceed 1024 He says the following in the article: "Once you have equations (R11) and (R12) it is fairly easy to extract 'a' and 'b', and thus to find the law of the 'wi'. This calculus of 'a' and 'b' must be made manually and 'a' and 'b' defined as constants in the source; indeed they do not vary during the song." However, I cannot seem to understand how these values are calculated...I'm probably missing something simple, but learning fourier analysis in a couple of weeks has left me Decimated-in-Mind and I cannot seem to see it.

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  • HTML5 media loading sometimes suspends or aborts: misconfigured Apache?

    - by Joan Botella
    Recently, some code that has been working fine for months started to run unexpectedly. That code is just a media files loading JavaScript function, that uses jQuery. It's pretty long, but in essence it is like this: var $audio=$('<audio>'); $audio.on('canplaythrough',function(e){ $audio[0].play(); }); $audio.attr('src','song.ogg'); Basically, the file only loads sometimes, and sometimes stops loading with a suspend or even an abort event. I have uploaded a little testing HTML to http://www.joanbotella.com/tests/loading , where you can see what's happening. You can download the test files from http://www.joanbotella.com/tests/loading/loadingTest.zip for local testing. I have just checked that opening the test index.html file directly into Firefox, and not through my localhost Apache server, makes the audio files perfectly playable. So, I assume, my hosting and I have the Apache server misconfigured for serving media files. My software versions are: Apache 2.2.22-1ubuntu1.7 , Mozilla Firefox 31.0 , Chromium 36.0.1985.125 and jQuery 1.11.0. Can you help me? Thanks in advance!

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  • Media center consumes all available memory when attempting to play music off of a server

    - by RCIX
    I have Windows 7 Ultimate, and recently, when i try to play a song off of my Twonky Media Server/Windows Media Connect (based on an HP WHS with an Atom), it plays choppily. When i open Resource Monitor, it shows that after ordering the music to play, memory usage rapidly spikes to consume most, if not all, of the available memory on my system (excluding a couple hundred megabytes in standby). Why does it do this and is there anything i can do to stop it? Edit: it happens when I attempt to browse the server's music, not just when i play music. Edit 2: the "ehshell" process is what consumes the memory, appears to me something specific to media center. Moreover, the ehshell process doesn't die in this case. Edit 3: It only happens when browsing my Twonky library, and not my Windows Media Connect.

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  • Hearing repeated sound in Linux mint Chrome Browser

    - by aravind.udayashankara
    I am using Linux mint OS since an Year , I use to consistently download updates and install , I use chrome as a default browser , when ever I open youtube and watch some video , I listen to some repetition in sound ( say repeated lyrics of song ) while it is playing , In firefox it is working fine . What is the problem am I missing any plugin , AFAIK Chrome doesn't need a flash player plug in , It has a built in flash player . IS that the problem ? And also previously I was not facing this , recently I started using Cinimon UI centOS after this all these kind of problems started MY hard ware is 64 bit intel core i3 and also I have installed linux mint 64 bit Please let me know what is the problem and how to fix this . Thanks in advance for responding to this post

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  • After upgrading to trusty, ALSA midi connection (aconnect) doesn't seem to work right

    - by SougonNaTakumi
    Previously in kubuntu 13.10 I was able to open vmpk or plug in a midi keyboard, and provided that TiMidity was running in server mode, I could run aconnect [keyboard port (129:0 for vmpk)] 14:0 aconnect 14:0 128:0 and I could play the keyboard and get sound. But now, a while after upgrading to trusty, I tried to do that, and didn't get any sound. TiMidity itself still plays files fine, but if I try to play them with aplaymidi, I still just get silence. Oddly, the midi files are clearly being read. When I ran (where 130:0 was vmpk's input port) aplaymidi -p 130:0 ~/path/to/midi.mid vmpk was highlighting notes on the piano as if it were playing the midi. One time I tried this, TiMidity (?) very briefly played a fraction of a second of the first chord of my song before everything went silent and vmpk just highlighted the first voice on the keyboard as usual. Now the weirdest part of this is that probably about 40% of the time, when I've played at least one note with either aplaymidi or vmpk, when I run aconnect -x I get a sudden burst of a note or chord from my speakers (that is, if I played one note, I get a note; if I played multiple sequential notes, they turn into a chord), as if the notes were being queued up but not being played and that somehow liberated them. I have no idea what's going on there. A little while ago I remember having a problem with Audacity playing wav files sped up and also locking up if I tried to pause it, which it stopped doing when I set the audio devices to the actual audio devices rather than pulse. But now when I checked again, it's doing the opposite: it won't play audio at all and/or acts weirdly if I don't set the audio devices to pulse, and either way will very occasionally randomly do the speeding up thing regardless. Oddly in the midst of what's looking like a pretty screwed up sound system, sound in VLC and Firefox has been working fine and if I play a wav file with aplay ~/path/to/sound.wav that works fine too. Any idea what I could do to figure out what's wrong with ALSA and/or fix it?

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  • How can I obtain/build a wireless volume knob for Windows?

    - by Mr Grieves
    I use my computer as a media center and simply love it. It's an older box running XP and it works better than everything else I've tried turning into a media center (Windows 7, Vista, several Linux distros, etc). The only thing I hate is having to walk to my audio amp to turn the volume up or down. I can use the Windows volume slider or any keyboard with keys to control volume. What I'd really love is to have a wireless knob which I can put anywhere when listening to music (e.g. kitchen) which controls the volume. It seems so simple yet I can't find it anywhere. Having controls for pausing and moving to next song would also be terrific. Griffin's Powermate could do the trick but I'd really want it to be wireless. Do you know of something I can buy or build myself to serve this purpose?

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  • Choosing Truecrypt volume names and keyfile names

    - by Howiecamp
    Any recommendations on what to name Truecrypt volumes (container files) and where to locate them? Certainly a name like "this is a truecrypt volume.tc" isn't a good idea. Any recommended storage locations? Same question for keyfiles that are generated with Truecrypt. Finally, lets say you choose an existing file, ymca.mp3, as your keyfile. Given that that file is innocuous and normal looking, isn't it easy to forget that's your key file so when you get sick of the Village People and delete the song you're hosed?

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  • Audio splitting and noise removal on Windows

    - by pts
    My mother has about 100 hours of audio in a mix of MP3 and WAV files, the digitized versions of her vinyl records. Each file contains about 5 songs with a few seconds of (noisy) pause between them. My mother needs software for Windows XP with which she can listen to the files, find the gaps manually, split the files at the gaps found, reduce noise on each song, and export the songs to individual MP3 files. My mother has very limited software user skills and affinity, and she doesn't speak English. The simpler the software, the better for her, even if noise reduction is worse than with a more sophisticated, but more complicated software. I'd prefer free software, freeware or shareware (which can do all above). Please recommend something much simpler than Audacity. The software should guide the user through the process, always showing the next few available steps, and being intuitive in the sense that there are only a few allowed actions and it's obvious what they are and how to activate them. Which software would you recommend?

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  • Is there a simple way to make my laptop always turn on muted? [closed]

    - by tehp
    Possible Duplicate: How to mute the sound output on Windows Start up? I carry a laptop around. Sometimes I'll open it up in meetings or other quiet settings. The speaker is interrupted by the windows startup noise or Pandora refreshing it's page and starting to play a song or some other random computer noise. Is there a simple way to mute the sound on startup/resume/whatever? Kind of like the BIOS option to turn on or off the Num Lock.

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  • Windows media player rating stars disabled/greyed out

    - by Jaison Varghese
    I'm unable to rate any of my songs using WMP. I've been rating songs on WMP for some time. But suddenly, I can't rate/ change my ratings. I cant do it using the normal 5 star rating control at top of playlist Or using Right click song - Rate - 5 star But I'm able to rate using Windows Explorer "bottom properties pane" that comes on clicking on a file I'm unable to rate using WMP. The ratings don't even change color (gold/grey) on mouse hover. Please give me a solution without losing my existing rating

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  • Winamp trashed its local media library database when I blocked it on my firewall -- Is this supposed to happen?

    - by Hamster
    Frankly, I don't see a compelling reason why Winamp needs to be using my network, as all I do is listen to songs from my local media. However, it appears to exact revenge when I try to ensure it can't on my firewall by completely eradicating my media library list (which includes all my song ratings and such). I was not able to recover this data, as I hadn't exported the database prior, and the actual database file was completely wiped. My other playlists and the actual media itself appear not to be effected, though. Is this supposed to happen, by chance? Edit: I wasn't able to get it to replicate this behavior with a different firewall+Winamp version. Hmm.

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  • Pick Up BioShock and Bioshock 2 for Price of a Big Mac Meal

    - by Jason Fitzpatrick
    Pre-ordering just opened on the third-installment of the highly-acclaimed horror-survival game series BioShock, BioShock Infinite. As part of the pre-order promotions, you can pick up a bundled copy of BioShock and BioShock 2 for a song. For the unfamiliar, BioShock is an atmospheric first-person-shooter backed up by an incredible storyline set in the underwater utopian-turned-dystopian city of Rapture. BioShock 2 continues the story in Rapture and the upcoming release (Febuary 2013) of BioShock Infinite takes place in the same game universe but fifty years before the events of the first two installments. If that seems like the kind of game you could dig into, Amazon has the Windows-platform version of BioShock and BioShock 2 bundled together for a scant $7.49–81% off the Steam and general retail price. The best part about the promotion is you can either download the games from Amazon or, for those of you that use Steam, you can simply plug the game product key into Steam. You can read more about the both the original two games and the upcoming release at the official BioShock site. BioShock Dual Pack [via Geeks Are Sexy] How Hackers Can Disguise Malicious Programs With Fake File Extensions Can Dust Actually Damage My Computer? What To Do If You Get a Virus on Your Computer

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  • Deleting a partition on dual boot

    - by blade4
    I have split my C:\ physical disk into 3 seperate partitions: C, H, and K. C has my original OS and is the active partition, H has another OS (dual boot), and K has song files. I want to keep the other OS (Windows Server) and when I am in this OS, I can't delete C ("Windows cannot format this partition"). What is the best way for me to get rid of C, keep all the songs intact, and the Server OS partition, so I replace C with another OS, and then get rid of the original Windows Server OS (So revert the dual boot to a single boot).

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  • Facing gestures in Linux mint Chrome Browser

    - by aravind.udayashankara
    I am using Linux mint OS since an Year , I use to consistently download updates and install , I use chrome as a default browser , when ever I open youtube and watch some video , I listen to some gestures in sound ( say repeated lyrics of song ) while it is playing , In firefox it is working fine . What is the problem am I missing any plugin , AFAIK Chrome doesn't need a flash player plug in , It has a built in flash player . IS that the problem ? And also previously I was not facing this , recently I started using Cinimon UI centOS after this all these kind of problems started MY hard ware is 64 bit intel core i3 and also I have installed linux mint 64 bit Please let me know what is the problem and how to fix this . Thanks in advance for responding to this post

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  • What kind of proxy acl rules should be applied?

    - by user42891
    I try to block sites in squid based on this article. Assuming you would want to block access to Yahoo (e.g http://www.yahoo.co.jp, http://www.yahoo.com, http://www.yahoo.co.in), you would ideally want to block all of the above URLs, if I use a regular expression and try to search something called yahoo it seems to get blocked. We are just interested in applying rules which would be most commonly used across all companies (e.g. social networking sites like facebook, orkut), porn sites (e.g. sex), gaming sites (games), movie & song download sites, and sites where they can upload data (e.g. rapidshare) What would be the common set of effective rules in achieving the above?

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  • Redirect audio from laptop to desktop over LAN

    - by Ram Rachum
    I want to be able to play a song on my laptop and have it sound through my desktop's (infinitely better) speakers. If you're familiar with Input Director: I want something that is to audio what Input Director is to mouse/keyboard. I want something that automatically redirects all audio from the laptop to the desktop in real time, and I want that solution to require, like Input Director, minimum maintenance. Beyond the initial setup, I don't want to have to babysit the program that does this. I want something that launches automatically with Windows and just works, and also allows me to cancel it whenever I want. And also doesn't go crazy when the laptop is turned on in a different network where the desktop computer isn't available. Any suggestions for such a program? (I use Windows XP on both computers.)

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  • Mouse selects everything on its own

    - by meneer
    I have a strange problem that my mouse keeps selecting everything I point to. For example, if I open Rhythmbox, then at the top of the screen there is a text which says which song is playing. If I move my mouse over this text, then it will select this text; but I am not clicking. This behaviour does not happen in all programs. For example in Firefox I have no problem at all. Maybe it is Gtk related? Nautilus also behaves strangely; I cannot open files by clicking on them, I have to select and make a box around the file and then press enter to open it. If I click, then nothing happens. Similar problems also happen with other Gtk software. I think the problem might be related to touchscreen issues (I have a touchscreen). I run Gnome 3 on Ubuntu 12.04. I have a HP touchsmart 610 desktop computer. Any help is greatly appreciated. UPDATE: I just did a fresh reinstall, and I am 90% certain that it is related to the touchscreen drivers. Here is what happens when I reinstall. At first boot, so exactly after install, everything works fine, except the touchscreen: The touchscreen does not respond. I update ubuntu, because I installed from an old CD (CD with ub. 12.04). Then on next reboot I have touchscreen working , but the working touchscreen comes together with the mouse selecting everything on its own. SECOND QUESTION: Would anybody know how I could figure out what those touchscreen drivers are (so that I can disable them) ?

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  • How to force Windows XP to rename a file with a special character?

    - by codeLes
    I have a song that Windows can't play because there is a question mark in the name of the file. "Where Have All the Cowboys Gone?.ogg" // as an example So I try to rename it and Windows complains whether I try it in Explorer or from command prompt. Error I get when trying to copy, rename, or move is: The Filename, directory name, or volume label syntax is incorrect Is there a Windows way to force a rename in this case? Update I'll keep an eye on this question, but after 13 answers and many attempts (aside form 3rd party solutions) it seems that Windows can't do this (or at least my windows can't, no short names). So I'm accepting the answer which was my original solution anyway of using Linux. It would be nice to see Windows handle this somehow, so don't stop just because I've accepted this answer, the question still stands!

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  • How can I use the Band Pass Filter in GarageBand?

    - by Another Registered User
    What I want to do: I have a music WAV file and want to put a Band Pass Filter over it, to filter out anoying high frequencies. I was reading on the net that there is a "AuBandPass" plugin in Mac OS X. I just can't figure out how I could use that in GarageBand. I don't even find the effects at all. I created a new GarageBand file and dropped the WAV file in there. Now I can play that song in GarageBand. What must I do next?

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  • How to force Windows XP to rename a file with a special character?

    - by codeLes
    I have a song that Windows can't play because there is a question mark in the name of the file. "Where Have All the Cowboys Gone?.ogg" // as an example So I try to rename it and Windows complains whether I try it in Explorer or from command prompt. Error I get when trying to copy, rename, or move is: The Filename, directory name, or volume label syntax is incorrect Is there a Windows way to force a rename in this case? Update I'll keep an eye on this question, but after 13 answers and many attempts (aside form 3rd party solutions) it seems that Windows can't do this (or at least my windows can't, no short names). So I'm accepting the answer which was my original solution anyway of using Linux. It would be nice to see Windows handle this somehow, so don't stop just because I've accepted this answer, the question still stands!

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  • DAW with realtime pitchshifting

    - by monov
    I'm very happy with Renoise but it has a problem, it can't do realtime pitchshifting. For example, consider a breakbreat which I want to trigger at different pitches sometimes. Like I keep 'Q' pressed for a 'C' pitch, but then I press 'B' for a lower pitch. In Renoise the resulting beat is not only lower pitch, but also longer/slower. I want it to be the same speed, just a different pitch. I've been doing this externally in Audacity, then keeping a couple of different pitched versions in Renoise but that's tedious. Or consider a melodic segment snipped from a song into a sample. Say I want to play it simultaneously in its real pitch and 5 semitones higher, so it forms a sort of chord effect. Again, no easy way to do this in renoise. Is there a DAW app that does that kind of thing? I've heard of ableton live, it has 'live' in the name so maybe it can do it?

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  • Easy and fast software for mixing music [closed]

    - by Pennf0lio
    Please suggest some good software that lets you mix music seamlessly. I have tested some software and most of them are hard to use. I have tried fruity loops, FruityLoops I think is great for people who have some experience with mixing music. What I'm looking for is software for people who don't have experience with mixing. The pieces of music I am planning to join are different from each other, they have different Tempo and Beat. The music will be used in my friend's dance and she wants the music to contentiously play without pausing or jumping to another song. She wants the songs to flow smoothly. Any Advice? Thanks!

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  • The model to sell apps on App Store is better with a paid only version?

    - by ????
    Rob Napier, the author of iOS 5 Programming Pushing the Limits, mentioned there are several models of selling apps on the App Store: Write an app and sell it Publish a free and a full version Ad supported by third party or by iAd In App purchase Surprisingly, the author said that the most workable model is (1) in terms of sales. I would think that (2) with fairly limiting ability for the free version can bring more sales, as people without trying, might not plunge down $0.99 or $1.99 for something they haven't tried? I for one, might not have purchased Angry Birds if I didn't try their free version first. Also, I think it also depends on the situation: if the app is about alarm clock, and there are already 5 alarm clocks in App Store that are free, then your app that is $0.99 might not be that eagerly purchased. If yours is also free, and users really like it out of all the other ones, then they may think, $0.99 is nothing to get a good alarm clock, and gladly pay you the $0.99 in exchange for a full version of the alarm clock, something that they can't get with the free version. (such as the full version can let you choose a song from your Music Library for the alarm). Could (1) work only if the user definitely want it and have no substitute? How might it work the best?

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  • My new laptop won't let me play any songs I download

    - by ryuuko
    I recently got a new laptop. I reinstalled everything because my old computer is loaded with viruses. I downloaded a song to play on iTunes but it just will not play. I tried it with Windows Media Player and it just says it encountered a problem while playing the file. It's the same with every kind of media player on my laptop. It can only play the sample music provided in the laptop, and it plays music and video fine online. Please help me solve this problem.

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  • Is iTunes touching my library files automatically and/or in the background?

    - by Rich
    I am currently using a service called Cubby (it is like Dropbox) to sync my iTunes library between several computers. I would expect then that syncing only occurs when I add to or delete from the library. But I notice that often the Cubby app will be actively syncing when I haven't made any changes, and it will give notifications that (for example) a song changed which I definitely did not recently add/remove. Likewise I have lately been seeing weird changes in filename and track number tags. I wonder if this is iTunes trying to organize something automatically and failing? So does anyone know if iTunes will routinely modify your library files and how/why? What is it doing?

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