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• How do I know if my system is capable of playing 24bit/96kHz sound?

  - by Igor Zinov'yev

  Let me state for the record that I'm a total noob when it comes to Hi-Fi sound systems, but I am rather picky about the sound quality. Normally I listen to CD recordings ripped to FLAC in 16/44, but I have several albums that are also ripped from vinyls to FLAC in 24/96. But it seems that I can't tell the difference between 16-bit and 24-bit versions (except for some vinyl noises, of course). That can be due to several reasons: my equipment (onboard audio, monitor headphones) isn't good enough to make any difference, my system is not playing audio in 24-bit 96 kHz, I am physically unable to hear the difference. So here is my question, how do I tell if my system can play 24-bit sound with 96 or 192 kHz resolution? And if it can, how do I tell that it plays it instead of downsampling to 16-bit / 44 kHz? Also, what hardware (audio cards, amplifiers, etc.) would you recommend to play such recordings on Ubuntu?

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• Distortion problem with Creative audio equalizer

  - by e-t172

  Hi, I have a problem with the Creative Console EQ, I don't know if it's fixable or not (is the EQ software or hardware on these cards?). Basically, I have enormous distortion with certain sounds in the 30 - 125 hz range. When this happens I get some sort of "frrzzzz" (sorry, I'm french and don't really know the correct english word for that) on top of the original sound. I have a Sound Blaster Audigy SE. I'm using the Daniel_K drivers, on Windows 7 Profesionnal x64. All the effects are disabled except EQ. Steps to reproduce Put the card in 24bit/96khz mode. The problem is also present with 16bit/48khz but seems to be less audible. In the Creative Console, use the following EQ: (full size) Play this sound at a reasonably high volume. You should hear distortion on the two "booms". Especially the second one. Disable Creative EQ. Play the sound in an application with an integrated EQ (e.g. foobar2000, ffdshow) using the same EQ parameters. There is no distortion. Conclusion: the Creative EQ is broken. Is anyone having the same problem? I'm also interested in the results with other Creative cards or even other brands soundcards with a similar EQ feature.

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• How to add a sound that an enemy AI can hear?

  - by Chris

  Given: a 2D top down game Tiles are stored just in a 2D array Every tile has a property - dampen (so bricks might be -50db, air might be -1) From this I want to add it so a sound is generated at point x1, y1 and it "ripples out". The image below kind of outlines it better. Obviously the end goal is that the AI enemy can "hear" the sound - but if a wall is blocking it, the sound doesn't travel as far. Red is the wall, which has a dampen of 50db. I think in the 3rd game tick I am confusing my maths. What would be the best way of implementing this?

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• How can I force a preferred sound output device to be used?

  - by Dave M G

  In my sound settings interface, there are two devices for sound output: Both refer to the same physical device, which is a network sound device. Both work, but only with the second one, Simultaneous output to Kenwook Audio Device Digital Stereo (IEC958) on mythbuntu@mythbuntu, does the output volume respond to being changed. The first one always plays at the same level, and ignores volume settings. Every time I boot, the first one is selected. How can I make it so the second one is the default and the first one is disabled or at least never selected?

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• How to boost playback volume in real time on media recorded with a very low volume.

  - by L Marksman

  I have never heard a satisfactory answer to this often misunderstood question, let me explain. Lets say I have a sound card and earphones/speakers that can play back audio loud enough in most cases. This is great but the problem is that you always find people who do not know how to record audio, from Youtube video's to music. So now you end up with a audio playback that only uses 10% or less of the capacity of your sound hardware, in vista/win 7 you will see this frequently in the mixer with the volume pushed up to max but the green sound level only goes up a millimeter or two. I am looking for (preferably free) software or a method to boost the sound level of any audio from any source in real time to use more of my hardware capacity similar to what VLC media player can do. Oh and please, do not tell me it is impossible. I am not trying to boost the volume past what my hardware is capable of, I am just trying to use my hardware's full capacity. Also please do not tell met to buy new hardware, I know I can use hardware amplification, I don't want to (like many others) spend money on a simple little problem like this. Thanks!

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• What's the difference between Pygame's Sound and Music classes?

  - by Southpaw Hare

  What are the key differences between the Sound and Music classes in Pygame? What are the limitations of each? In what situation would one use one or the other? Is there a benefit to using them in an unintuitive way such as using Sound objects to play music files or visa-versa? Are there specifically issues with channel limitations, and do one or both have the potential to be dropped from their channel unreliably? What are the risks of playing music as a Sound?

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• No sound on Debian unstable Intel Corporation 82801JD/DO (ICH10 Family) HD Audio Controller

  - by Dave Roger

  I have no sound on my Debian unstable. # cat /etc/issue Debian GNU/Linux squeeze/sid # lspci |grep -i audio 00:1b.0 Audio device: Intel Corporation 82801JD/DO (ICH10 Family) HD Audio Controller (rev 02) # lsmod | grep -i snd snd_hda_codec_realtek 235506 1 snd_hda_intel 19907 0 snd_hda_codec 54244 2 snd_hda_codec_realtek,snd_hda_intel snd_hwdep 5380 1 snd_hda_codec snd_pcm_oss 32591 0 snd_mixer_oss 12606 1 snd_pcm_oss snd_pcm 60471 3 snd_hda_intel,snd_hda_codec,snd_pcm_oss snd_seq_midi 4400 0 snd_rawmidi 15515 1 snd_seq_midi snd_seq_midi_event 4628 1 snd_seq_midi snd_seq 42881 2 snd_seq_midi,snd_seq_midi_event snd_timer 15582 2 snd_pcm,snd_seq snd_seq_device 4493 3 snd_seq_midi,snd_rawmidi,snd_seq snd 46446 11 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device soundcore 4598 1 snd snd_page_alloc 6249 2 snd_hda_intel,snd_pcm # cat /proc/asound/version Advanced Linux Sound Architecture Driver Version 1.0.21. # uname -r 2.6.32-5-amd64

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• Trixbox: external SIP with no sound

  - by Leandro Vidal

  I have a trixbox server and every works find except the external SIPs. Inside net all sound goes fine, but if I use a SIP phone outside the net, I can connect, I can receive calls but I there is no sound. I have this text in the sip_nat.conf: nat=yes externhost=xxxxx.dyndns.org localnet=192.168.1.0/255.255.255.0 localhost=192.168.1.210 externrefresh=10 qualify=yes And I have the ports from 5036 to 5082, 4569 and from 10000 to 20000 redirected to 192.168.1.210 on TCP and UDP. What's wrong? Thank you very much in advance

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• Mac Mini 1.66 no sound on Windows 7

  - by Steph

  I've tried everything I could to get the sound working. I've tried to install the drivers from the Snow Leopard disk, then I went and got the latest RealTek drivers from the RealTek website. Then I read that old Mac mini's could have an integrated Cirrus chip, and I tried to grab the latest driver from the website, and it appeared to install, but nothing. There's also nothing listed under Sound and ... in the Device Manager. I've tried to manually include a legacy driver, which worked for RealTek but not for the Cirrus driver. Of course it said there was no RealTek hardware install, which makes me think it's a Cirrus chip. Any further suggestions or thoughts would be really appreciated. This is a Mac Mini 1.66. I'm also not sure how to be able to detect what card is integrated into the system, so that would be helpful too (remembering that there's no driver installed). Even just to get the chip type would be great to confirm.

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• Quiet Sound while recording using the "Stereo Mix" option on Windows XP.

  - by DragoonX

  I'm trying to record some of my work, and the video capture program I'm using works fine. It's HyperCam2, and since it's not really professional, I don't care about that little thing in the corner. Anyways, If I check the record sound option and put it on the highest quality, and I want it to record the sounds playing from my computer, I have it record the "Stereo Mix" setting. However, after a quick test, I saw that even though my computer was at max volume, the recorded sound was very quiet, almost inaudible. Thinking it was just HyperCam, I downloaded Audacity, and only met similar results. While I'm not entirely savvy with hardware, I BELIEVE this to be my soundcard: SoundMAX Integrated Digital HD Audio

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• Sound recognition software

  - by Cawas

  I'm looking for a software able to recognize an specific sound and then do some action. I want to leave my notebook close by the house intercom so when I hear someone ringing it, a very specific and unique sound, it will send me an email at my office or something. The main issue is that there's a lot of different noises there, but none would be as loud as the intercom for the specific place I've left the microphone. Is there any software out there able to do this? Hopefully with a mac version. I trust there's nothing closely related in this to speech or voice recognition technologies, and specially the softwares in there.

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• Micro sound breaks/interrupts on Windows 7

  - by cand

  Hello all, I've been experiencing strange behavior recently. When listening to mp3 or watching movie or whatever that uses sound, I get micro breaks in sound. It's like it hangs or cuts a fragment for about 0.5s. When I start OS, it's ok, but as time passes it gets worse, to the extent that music is unlistenable being interrupted every 2 seconds. I haven't found any relevance between this behavior and hardware usage, I don't think it's directly related to HDD (or it might be but with significant delay). I have updated soundcard drivers and it didn't help a lot. My system is Windows 7, computer is simple HP laptop, nx7300-Ru374ES with WD Caviar Scorpio Blue hard drive inside and integrated soundcard on it (I can check the model later if it's important). Did anybody encounter such problem ? Maybe it's a common thing on Windows 7 or someone knows how to solve it? Thanks in advance.

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• Skype 2.1beta for Linux and sound quality

  - by vava

  I've been using Skype 2.1beta for Linux with my bluetooth headset and quality of the sound is just awful. But not always though, if I call echo service, quality is acceptable, but when I call real people there's echo, sound is crippling, there's pauses, voice is unrecognizable, all sorts of quality problems in one call. If I use newest Skype under WIndows with the same headset to call to the same people, quality is more than normal. So, is there some settings I can tweak, like tell Skype which codec to use or maybe there's noise cancellation plugin for PulseAudio I can use or any other system setting I can try to play with?

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• Bad sound quality of 3.5mm headphone with mic on laptop

  - by Isaac

  I have a set of headphones that have a built-in mic for hands-free calling. They just work great on my Sony Ericsson Cedar cellphone. The problem is that when I connect headphone to my Dell N5010 laptop to listen to music, the quality is horrible, with very weak or no vocals. They funny part is when I hold down the talk button on the mic (headphone mic), at which point it sounds great, but goes back to bad quality as soon as I release talk button. Also, when I take out the jack a little, at some point, the sound is great but I have to hold the jack there. I looked for any configuration on the sound card driver but find nothing. Besides using a glue to hold down the talk button of mic :), is there any other solution?

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• Sound does not play when locking WinXP

  - by Christopher

  If I press the Windows-L combination to lock my PC the "Windows Logoff" sound does not play. It used to but at some point it stopped. I installed only trustworthy apps on my system and it is pretty clean so I don't think it is a virus. I checked the sounds in the control panel and "Windows Logoff" is set. Is there a sound associated with the key combination? Perhaps something in the registry? Any help is appreciated.

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• unstable / variating sound level (volume) within same song / clip

  - by Bastien

  Hello, I have a pretty standard Acer desktop (I guess a predecessor of the X5900 model). when playing mp3 / radio / youtube clips, the sound level is changing WITHIN the clip, highly annoying. in the case of an mp3, the same mp3 will play at a constant sound level on my iPod, so clearly an issue with the computer. problem existed under vista, I upgraded to windows 7 and have the same issue. I guess it might be soundcard-related, so updated the drivers, no luck neither. any idea ? thanks

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• No External Sound

  - by Walter

  I have ubuntu 9.10. Headphones appear to work fine. External speakers - nothing. There are so many sound preferences I have no idea what or which combination. Went to terminal did alsamixer seems to recognize my soundcard, though the driver is not listed in system - admin -hardware drivers, the only driver listed is my graphics card. I have tried several forums and it seems no one is interested in responding to sound issues. Here's hoping it is different here.

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• No surround sound over HDMI

  - by Chris A

  I have my Pioneer receiver hooked up to my AMD HD4600m which supports audio output over HDMI. I used to work fine, however, after a recent driver update, it will only output stereo sound. It used to output 5.1 surround sound perfectly. Windows does not seem to recognize the device as capable of 5.1. In the past, 5.1 was given as an option in the configuration window, like this: I can not get it to properly recognize the capabilities of the device. I have tried uninstalling the relevant audio device in device manager, and I have also completely removed and reinstalled the display driver. Any suggestions would be greatly appreciated. Thanks

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• Improving sound quality with remote ESD server

  - by cuu508

  Hi, I'm investigating low-budget ways to get audio from my PC (Ubuntu) to HiFi without wires. I'm currently testing a setup where Asus WL-500gP wireless router runs ESD daemon and has attached USB soundcard which is then plugged into HiFi. I'm testing playback on PC with mpg123-esd and Spotify under Wine. The sound is there, latency is unexpectedly low, but I also hear occassional clicks and some distortion from time to time. I suppose that's because of the low latency and wireless streaming of uncompressed audio--any packet drops, CPU temporarily being busy etc. will cause clicks in sound output. Is there a way around this problem, increasing latency / buffer size somehow perhaps? Streaming using shoutcast protocol seems to be a way out but I have feeling that would be a complex and brittle setup.

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• Hausman Test, Fixed/random effects in SAS?

  - by John

  Hey guys, I'm trying to do a fixed effecs OLS regression, a random effects OLS Regression and a Hausman test to back up my choice for one of those models. Alas, there does not seem to be a lot of information of what the code looks like when you want to do this. I found for the Hausman test that proc model data=one out=fiml2; endogenous y1 y2; y1 = py2 * y2 + px1 * x1 + interc; y2 = py1* y1 + pz1 * z1 + d2; fit y1 y2 / ols 2sls hausman; instruments x1 z1; run; you do something like this. However, I do not have the equations in the middle, which i assume to be the fixed and random effects models? On an other site I found that PROC TSCSREG automatically displays the Hausman test, unfortunately this does not work either. When I type PROC TSCSREG data = clean; data does not become blue meaning SAS does not recognize this as a type of data input? proc tscsreg data = clean; var nof capm_erm sigma cv fvyrgro meanest tvol bmratio size ab; run; I tried this but obviously doesn't work since it does not recognize the data input, I've been searching but I can't seem to find a proper example of how the code of an hausman test looks like. On the SAS site I neither find the code one has to use to perform a fixed/random effects model. My data has 1784 observations, 578 different firms (cross section?) and spans over a 2001-2006 period in months. Any help?

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• OSS4 on Debian Squeeze

  - by mit

  Hi, I am trying to get OSS4 to work on a Debian Squeeze 64 bit machine with an usb sound adapter. There is no sound from this adapter at the present, although it worked just before on the previous installation. You can see the output of some commands here: $ sudo /etc/init.d/oss4-base restart Stopping Open Sound System: SNDCTL_MIX_EXTINFO: No such device or address done. Starting Open Sound System: done (OSS is already loaded). $ sudo /etc/init.d/oss4-base stop Stopping Open Sound System: SNDCTL_MIX_EXTINFO: No such device or address done. $ sudo /etc/init.d/oss4-base start Starting Open Sound System: done (OSS is already loaded). $ ossinfo Version info: OSS 4.2 (b 2002/201001250441) (0x00040100) GPL Platform: Linux/x86_64 2.6.32-5-xen-amd64 #1 SMP Fri Dec 10 17:41:50 UTC 2010 (pc11) Number of audio devices: 2 Number of audio engines: 2 Number of MIDI devices: 0 Number of mixer devices: 2 Device objects 0: osscore0 OSS core services 1: oss_hdaudio0 ATI HD Audio interrupts=0 (613) HD Audio controller ATI HD Audio Vendor ID 0x10024383 Subvendor ID 0x10192816 Codec 0: Not present 2: oss_usb0 USB audio core services 3: usb0d8c0126-0 USB sound device 4: usb0d8c0126-1 USB sound device 5: usb0d8c0126-2 USB sound device 6: usb0d8c0126-3 USB sound device MIDI devices (/dev/midi*) Mixer devices 0: (USB sound device )(Mixer 0 of device object 3) 1: USB sound device (Mixer 0 of device object 5) Audio devices (USB sound device play /dev/oss/usb0d8c0126-1/pcm0 ) (device index 0) USB sound device play /dev/oss/usb0d8c0126-3/pcm0 (device index 1) Nodes /dev/dsp -> /dev/oss/usb0d8c0126-1/pcm0 /dev/dsp_out -> /dev/oss/usb0d8c0126-1/pcm0 /dev/dsp_mmap -> /dev/oss/usb0d8c0126-1/pcm0 $ osstest Sound subsystem and version: OSS 4.2 (b 2002/201001250441) (0x00040100) Platform: Linux/x86_64 2.6.32-5-xen-amd64 #1 SMP Fri Dec 10 17:41:50 UTC 2010 *** Scanning sound adapter #-1 *** /dev/oss/usb0d8c0126-1/pcm0 (audio engine 0): USB sound device play - Device not present - Skipping *** Scanning sound adapter #-1 *** /dev/oss/usb0d8c0126-3/pcm0 (audio engine 1): USB sound device play - Performing audio playback test... /dev/oss/usb0d8c0126-3/pcm0: No such file or directory Can't open the device *** Some errors were detected during the tests *** $ ossxmix /dev/oss/usb0d8c0126-2/mix0: No such file or directory No mixers could be opened $ ossmix SNDCTL_MIX_EXTINFO: No such device or address ad@pc11:~$ man ossmix ad@pc11:~$ ossmix -a SNDCTL_MIX_EXTINFO: No such device or address ad@pc11:~$ man ossmix ad@pc11:~$ ossmix -D SNDCTL_MIX_EXTINFO: No such device or address ad@pc11:~$ ossmix -D 0 SNDCTL_MIX_EXTINFO: No such device or address ad@pc11:~$ man ossmix ad@pc11:~$ ossxmix /dev/oss/usb0d8c0126-2/mix0: No such file or directory No mixers could be opened How can I make oss sound work? I can add more information if necessary.

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• Watch Awesome CGI Effects from ‘Game of Thrones – Season 2' Unfold in Front of Your Eyes [Video]

  - by Asian Angel

  CGI technology is pure awesomeness when it comes to adding scenic views and effects to our favorites TV shows and movies. Watch the process unfold right in front of your eyes with this terrific video that focuses on the second season of Game of Thrones! CGI VFX Breakdowns: “Game of Thrones” by Pixomondo [via Nerd Bastards] How To Create a Customized Windows 7 Installation Disc With Integrated Updates How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using?

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• Bitmap Effects In WPF - Part III

  In previous article we saw remaining three effects DropShadow, Bevel and Emboss. In this article we will see how to group effects, and we will see how we can achieve the effects with triggers.

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• Jazz up your web forms using jQuery animation effects

  - by bipinjoshi

  In this part I cover how to add jazz to your web forms using jQuery effects. jQuery provides a set of methods that allow you to create animations in your web pages. Collectively these methods are called as Effects. The effects they render include fading in and out, sliding in and out, changing opacity of elements, hiding and showing elements and so on. You can, of course, define custom animations. In this part we will use these effects to develop a tooltip, master-detail listing and progress indicator.http://www.bipinjoshi.net/articles/9b1f4a81-ae07-4859-8ff2-067e5887adbd.aspx   

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• Bitmap Effects In WPF - Part II

  In previous article we saw how we can add effects; we experienced Blur and Outer Glow Bitmap effects. In this article we will see rest of the 3 Bitmap Effects.

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