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  • iPhone, JQTouch and HTML5 audio tags

    - by Moo
    I am having an issue with JQTouch (latest beta) and html5 audio tags on 'sub pages' - the audio tag works before any page transitions are done, and cease to work afterward. For example: http://richardprice.dyndns.ws/test.html and http://richardprice.dyndns.ws/test2.html are identical other than I swap the "current" class between the two divs - all the audio tags play the same mp3. On test.html the audio tag on the initial page works, but when you switch to Page 2 the audio tag on that page does not (and sometimes results in a browser crash). Switch back to Page 1 and the audio tag on that page has ceased to work. test2.html is the same test but with the initial pages reversed, and the same thing happens - Page 2 (now the initial page) plays the audio, Page 1 does not, and switching back to Page 2 results in the audio no longer working. Thoughts?

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  • <audio> element autobuffers no matter what

    - by pthulin
    I'm trying to make a web based media player using the HTML5 audio element implemented in Firefox 3.5 and Chrome. Reading Mozillas documentation, omitting the autobuffer attribute should result in the audio src not being requested: if specified, the audio will automatically begin being downloaded, even if not set to automatically play. This continues until the media cache is full, or the entire audio file has been downloaded, whichever comes first However, on the server side I notice the files are being requested anyway. My sample page is very simple: <html> <body> <audio src="1.ogg"></audio> <audio src="2.ogg"></audio> </body> </html>

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  • Modify audio pitch of recorded clip (m4v)

    - by devcube
    I'm writing an app in which I'm trying to change the pitch of the audio when I'm recording a movie (.m4v). Or by modifying the audio pitch of the movie afterwards. I want the end result to be a movie (.m4v) that has the original length (i.e. same visual as original) but with modified sound pitch, e.g. a "chipmunk voice". A realtime conversion is to prefer if possible. I've read alot about changing audio pitch in iOS but most examples focus on playback, i.e. playing the sound with a different pitch. In my app I'm recording a movie (.m4v / AVFileTypeQuickTimeMovie) and saving it using standard AVAssetWriter. When saving the movie I have access to the following elements where I've tried to manipulate the audio (e.g. modify the pitch): audio buffer (CMSampleBufferRef) audio input writer (AVAssetWriterAudioInput) audio input writer options (e.g. AVNumberOfChannelsKey, AVSampleRateKey, AVChannelLayoutKey) asset writer (AVAssetWriter) I've tried to hook into the above objects to modify the audio pitch, but without success. I've also tried with Dirac as described here: Real Time Pitch Change In iPhone Using Dirac And OpenAL with AL_PITCH as described here: Piping output from OpenAL into a buffer And the "BASS" library from un4seen: Change Pitch/Tempo In Realtime I haven't found success with any of the above libs, most likely because I don't really know how to use them, and where to hook them into the audio saving code. There seems to be alot of librarys that have similar effects but focuses on playback or custom recording code. I want to manipulate the audio stream I've already got (AVAssetWriterAudioInput) or modify the saved movie clip (.m4v). I want the video to be unmodifed visually, i.e. played at the same speed. But I want the audio to go faster (like a chipmunk) or slower (like a ... monster? :)). Do you have any suggestions how I can modify the pitch in either real time (when recording the movie) or afterwards by converting the entire movie (.m4v file)? Should I look further into Dirac, OpenAL, SoundTouch, BASS or some other library? I want to be able to share the movie to others with modified audio, that's the reason I can't rely on modifying the pitch for playback only. Any help is appreciated, thanks!

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  • Pre-load audio files at the client-side for later use

    - by awj
    I'm building an online test which implements audio (mp3) using the native audio player (i.e. non Flash-based). The test shows one question at a time and loads each subsequent question asynchronously. Some questions have an accompanying audio file, others don't, and the audio files can be several MB in size. So what I'm hoping to do is to preload the audio files client-side at the start of the test and then move these into place when the relevant question comes up. So far I've tried loading an audio file into a QuickTime player, then when that question comes up I use jQuery's clone(true) method to copy this into a part of the page which is displayed. However, when I do this the QuickTime player has to reload the audio file from source. Same is true for Windows Media Player. Does anyone have any suggestions as to how I can preload the audio client-side and then call it forward when needed?

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  • central apache log analysis of many hosts

    - by Jason Antman
    We have 30+ apache httpd servers, and are looking to perform analysis on the logs both for historical trending and near "real time" monitoring/alerting. I'm mainly interested in things like error rates (4xx/5xx), response time, overall request rate, etc. but it would also be very useful to pull out more compute-intensive statistics like unique client IPs and user agents per unit of time. I'm leaning towards building this as a centralized collector/server/storage, and am also considering the possibility of storing non-apache logs (i.e. general syslog, firewall logs, etc.) in the same system. Obviously a large part of this will probably have to be custom (at least the connection between pieces and the parsing/analysis we do), but I haven't been able to find much information on people who have done stuff like this, at least at shops smaller than Google/Facebook/etc. who can throw their log data into a hundred-node compute cluster and run Map/Reduce on it. The main things I'm looking for are: - All open source - Some way of collecting logs from apache machines that isn't too resource-intensive, and transports them relatively quickly over the network - Some way of storing them (NoSQL? key-value store?) on the backend, for a given amount of time (and then rolling them up into historical averages) - In the middle of this, a way of graphing in near-real-time (probably also with some statistical analysis on it) and hopefully alerting off of those graphs. Any suggestions/pointers/ideas, to either "products"/projects or descriptions of how other people do this would be greatly helpful. Unfortunately, we're not exactly a new-age-y devops shop, lots of old stuff, homogeneous infrastructure, and strained boxes.

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  • Will An External Audio Interface Reduce CPU Load?

    - by Yar
    I am considering buying a very-low-latency audio interface like this one. One question is if it will reduce CPU load (I'm at about 60%+ and my Macbook has 2.4ghz and 4gigs ram) during intensive audio processing. If the answer is "yes," how will it compare to a different, cheaper firewire audio interface? My thought is that offloading the processing is always the same gain, regardless.

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  • Force dual-mono audio (L+L or R+R) in Youtube video playback for one-channel audio movies

    - by jakub.g
    Occasionally, I find Youtube videos that have only one audio channel (only left or only right); example video (left channel only). This is quite annoying, especially with headphones on, as I hear sound in one ear, and no sound in the other. So, I want to be able to easily force dual mono (Left+Left or Right+Right) when I find that kind of video, and switch to normal stereo after I finish watching it. I have my headphones plugged well / I don't create audio/video - I want it for real-time playback only, In Windows audio config, setting balance 100% to Left / Right doesn't help (I have either still only left when moved to left, and no sound at all when moved to right), I've checked all the configurations in Control Panel > Sounds and Audio Devices > Audio > Sound Playback > Advanced like suggested in this post, in conjunction with moving balance left/right, and it doesn't seem to have any impact on actual sound I hear in headphones, No need to mix L with R, I just want L+L or R+R, I prefer software solutions to buying a stereo-to-mono adapter, Free solutions please, no $$$ ones, neither trials etc., In Control Panel > Realtek HD Sound Effect Manager I can turn on various mumbo-jumbo effects like: Concert Hall / Hangar / Bathroom / whatever environment (and in fact it makes the sound appear in two ears, but well, it's ridiculous to do this;), but there is no Dual Mono option. Finally, I know I can force L+L or R+R in VLC Player which supports Youtube (well, a little hack is needed, because Youtube internals change from time to time) but it is not very convenient to launch VLC just to play Youtube video - I want to keep it in the browser, I use Firefox generally (but well, if I don't find easier way, I will launch it in VLC).

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  • Realtek audio AC 97 5.1 on Windows 7: Terrible subwoofer quality

    - by Edu
    I have a media center PC with on-board Realtek AC97 Audio. I have been using Windows XP for a couple of years with great audio quality. I just upgraded this PC with Windows 7 and installed the latest Realtek drivers from http://www.realtek.com.tw/downloads/ At the testing screen, all the speakers works correctly (including subwoofer). Despite that, while playing any movie or music, the subwoofer quality is terrible. From it it just comes noises, in the correct rhythm but quite low and quite out of tone. I compensated the loudness by putting the other speakers lower but the sound of the subwoofer is really terrible. Is there anyone facing the same problem? Does anyone have a workaround for that? PS.: I had gone past the steps given in Terrible noises from subwoofer of ACER Aspire 6930 with Realtek sound chip but still I have a bad quality of sound. My problem is very similar to the one in http://www.mp3car.com/car-audio/143796-realtek-hd-audio-is-robbing-my-subwoofer.html

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  • Output Audio via HDMI and Analog Out Simultaneously

    - by Alex Miller
    I need to output the system audio from a desktop to both the HDMI output (sending to the display that functions as the room speakers) and via the analog stereo output (to feed the reference input on a microphone array for Skype). The only solution I've found so far for this is an HDMI Audio De-Embedder, but I'd really like to avoid buying another piece of hardware, so I'm hoping there's a way to do this inside software. So: Is there any way to make Windows 7 output all audio over both HDMI and Analog outs, simultaneously?

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  • Headset - No audio devices are installed

    - by Meowbits
    I've been having problems with my headset and I just cannot seem to figure it how to fix it. When I plug the microphone and headphone jacks into the computer I can hear sound fine. However the microphone does not get recognized. If I go into Sound Recording, it showed the microphone and it said that it was working but nothing was getting picked up. I uninstalled the audio devices and let windows reinstall them but now when I go into Sound Recording, it states "No audio devices are installed" Before I uninstalled the audio driver I made sure to try every combination of audio devices I could - none worked... If you know what I should try next, please let me know. I am getting frustrated. Running windows 7 64 bit

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  • Vislization Software for Live Audio?

    - by Fogest
    Currently I have been using WinAmp, with MilkDrop visulization plugins to disply visulizations that go with the music. This works fine for normal music files, but now I am in a situation where I require visulizations for a live audio in feed. Is there currently any software out there that can be used to show visulizations for live audio, or even if nothing good exists, is there anyway to still use WinAmp for live audio ?

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  • Windows 8.1 unable to play Music or the Audio from videos through Optical Out

    - by Zion Fox
    I am having an issue with my audio output, where any music file, and the audio side of videos are not being played through my optical audio output. I am running a Realtek HD Audio device built on Revision 1.0 on a GA-P55A-UD6 Gigabyte Board, which runs through it's optical output to an Astro A40 Mixamp, which does some upscaling before sending it to the headset. Now, notification sounds, and sounds/videos/music played through the browser or programs like Skype or games are working fine. This seems to specifically effect Foobar2000 and Media Player Classic. I have updated these two programs to their latest revisions, in addition to the soundcard drivers to no avail, and searching the error code thrown by Foobar2000: Unrecoverable playback error: The parameter is incorrect. (0x80070057) through Google returns not very helpful results, other than the one potentially mentioning DRM. This issue I am having a very hard time resolving, and am wondering if anyone here has experienced similar issues after updating.

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  • How to find a hidden streaming video/audio link and record it

    - by Stan
    I've been using 'URL snooper' to find the hidden streaming url. And feed that url to VLC to record streaming video/audio. But the VLC can't read those url. Then I also found that the url is like a floating url that changes every several hours. So the same audio station won't have same url. The streaming audio provider has bunches of audio stations and shuffle the link frequently. Is there any way to record the streaming media in this case? Please advise, thanks.

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  • Stream audio source from Mac OS X as MP3

    - by Adam Backstrom
    I'd like to broadcast audio from my Mac desktop to my Palm Pre, as the Pre is more portable and I can use it in the kitchen, or while I'm exercising, and so on. I can already capture the audio using Soundflower, but how might I create an MP3 stream out of the audio input device? For all intents and purposes, Soundflower can reduce this question down to, "How can I create an MP3 stream from the built-in microphone on my Mac?" as the answer can be applied equally well to iTunes output.

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  • VLC Audio Problems in Windows 7

    - by Vijay Dev
    When using VLC in my Windows 7 (RC), the audio works only if my head phones are connected. Without the head phones, the audio is not heard at all. Other players deliver the audio perfectly. Is this caused by some incorrect preferences ?

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  • Extracting and re-combining audio from a video

    - by waitinforatrain
    I'm fed up with Vegas, Premiere, Pinnacle, SoundForge and all of the other editors I've tried. I'm trying to modify the audio of an AVI file, but all of the editors I've tried insist on re-encoding the video when I save the changes, and either reduce the quality or take hours. Is there a way to just extract the audio stream from a video with ffmpeg, edit it in an audio editor and then recombine the saved changes with the video?

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  • How to find a hidden stream video/audio link and record it

    - by Stan
    I've been using 'URL snooper' to find the hidden streaming url. And feed that url to VLC to record streaming video/audio. But the VLC can't read those url. Then I also found that the url is like a floating url that changes every several hours. So the same audio station won't have same url. The streaming audio provider has bunches of audio stations and shuffle the link frequently. Is there any way to record the streaming media in this case? Please advise, thanks.

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  • Choose an output audio device different from the default on WMP 11

    - by GetFree
    I like to play my music through a Hi-Fi audio equipment and everything else (like windows sounds, web videos and such) through my default PC speakers. On WIndows XP I had WMP 9 and I could do that with no problems since I can choose what audio device (which sound card) to use, and that selection is for WMP only, which can be different from Windows' default audio device. But now that I have Windows Vista and WMP 11 I cannot longer choose an audio device just for WMP, or at least I can't find a way to do it (the control in the options dialog is no longer there). Was this useful feature really removed from WMP 11? or there is some other way to do it?

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  • Free alternative to Audio Hijack Pro?

    - by Tim Visher
    I'd like to record what I hear coming out of the main audio jack on my Mac. Nothing fancier than that. I'm aware of Audio Hijack Pro but that really does much more than I'm looking for and comes with a steep price tag. If it's the only tool that can do the job that's fine but I was hoping to find something that simply captured all audio coming from the computer and dumped it to a file. Thanks in advance!

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  • Choose an output audio device different from the default on WMP 11

    - by GetFree
    I like to play my music through a Hi-Fi audio equipment and everything else (like windows sounds, web videos and such) through my default PC speakers. On WIndows XP I had WMP 9 and I could do that with no problems since I can choose what audio device (which sound card) to use, and that selection is for WMP only, which can be different from Windows' default audio device. But now that I have Windows Vista and WMP 11 I cannot longer choose an audio device just for WMP, or at least I can't find a way to do it (the control in the options dialog is no longer there). Was this useful feature really removed from WMP 11? or there is some other way to do it?

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  • Free alternative to Audio Hijack Pro?

    - by Tim Visher
    I'd like to record what I hear coming out of the main audio jack on my Mac. Nothing fancier than that. I'm aware of Audio Hijack Pro but that really does much more than I'm looking for and comes with a steep price tag. If it's the only tool that can do the job that's fine but I was hoping to find something that simply captured all audio coming from the computer and dumped it to a file. Any suggestions?

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  • Sony Bravia (KDL-32EX402) audio connection fails

    - by Rasmus
    Hey. I'm having trouble connecting my computers audio to the TV (Sony Bravia KDL-32EX402). I'm using a standard AUX cable (some kind of adapter for L/R to go into the headphone plug on the computer). I'm connecting the other end to the back of the TV, it doesn't actually say "AUDIO IN" but it has to be (is also right below the "HDMI 1 AUDIO IN). When changing to "PC-mode" and setting the audio input to "PC" nothing happens. (but the pictures get's transmitted fine by VGA). I have checked that it's not the PC's headphone port, nor the AUX cable. What to do, what to do ?

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  • Sound card problem, no audio device detected

    - by Paul
    I bought a new sound card because my built in sound card did not function. When I open YouTube, Media Player or anything that can create a sound my computer will hang up and sometimes when I start my computer it will hang when the Windows XP sound will activate. Update: My computer has no audio. It says NO AUDIO DEVICE. I already installed Realtek AC97 and Realtek High Definition Audio Driver and I also pasted stream.dll to the Windows and system32 folders and I restarted my computer but it still says NO AUDIO DEVICE. Please help me. Thanks

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  • How to check properties of an audio [closed]

    - by Ashni Goyal
    Possible Duplicate: Tool to view video/audio file information Soundeffect class in WP7 requires following properties of the .wav file. The Stream object must point to the head of a valid PCM wave file. Also, this wave file must be in the RIFF bitstream format. The audio format has the following restrictions: Must be a PCM wave file Can only be mono or stereo Must be 8 or 16 bit Sample rate must be between 8,000 Hz and 48,000 Hz How can we check these properties for a given audio ?

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