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• Sony Vegas: minimal audio glitches

  - by Fuxi

  When doing video-editing with Sony Vegas, I noticed that it kind of produces minimal audio glitches very often. With glitch, I mean a copied fragment of approximately 1/2 second, as if I copied it and directly pasted it again. I'm assuming it must be something with puffers. Does anyone know of this problem? I have a pretty fast Windows 7 system with fast SATA drives.

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• n68 s-ucc front panel audio

  - by user264522

  I have a motherboard asrock n68 s-ucc, and i need a hand identifying which pins on the board to connect my front audio header connectors to. On the connectors I have: double connector: GND and MIC IN double connector: LINE OUT FL and LINE OUT RL double connector: LINE OUT FR and LINE OUT RR simple connector: MIC POWER On the motherboard I have: GND PRESENCE# MIC_RET OUT_RET MIC2_L MIC2_R OUT2_R J_SENSE OUT2_L manual of motherboard and my front panel Thanks so much to all

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• Dell 4600 Driver for Audio Card Windows 7

  - by Littlet-ENG

  I just installed windows 7 on dell 4600 desktop. the Audio card is a Creative Labs Sound Blaster Audigy 2. I've look all over, and I can't find a driver for windows 7. I've also looked at Vista Drivers. It seems Dell is not supporting Windows 7 with this computer. I've got a work around, but would like a driver if possible. Any help would be appreciated.

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• Wifi audio streaming vs what?

  - by Moshe

  I've noticed certain radio apps, that some stations required wifi and others did not. What were those other stations possibly using? Are there other methods of streaming audio on iOS?

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• windows live playback left and right audio channel

  - by user1254761

  I have a multichannel (4x stereo) audiocard (m-audio delta1010lt) and want to playback /playthru some of the channels live. But I am only able to playback/playthru the left channel on each stereo-input (CH1, CH3, CH5, CH7). For CH2,CH4,CH6,CH8 I see the Windows Volume-Indicator going up and down in the Windows Record-Audiosettings but I don't hear any playback sound. Is there a way to playback/playthru all input channels?

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• Split audio into tracks?

  - by Mark

  I've recorded some music from an internet radio stream. I want to split it into separate audio tracks, preferably automatically (where ever there's a pause, or using some other clever algo). Anyone know of some free software that can do this?

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• Serving a video and audio upload and streaming intense site

  - by Pollux Khafra

  I'm about to launch a new site that allows user to both upload/stream audio and video and I don't know anything about the server side of things. My original plan was to just use a dedicated server through Hostgator but from what I'm reading, Cloud hosting or Load balanced clustered is the best way to go for what Im trying to do. All the articles seem to have an agenda to sell you on an affiliate web host so how do I really need to do this?

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• Linux: grab audio from a video clip

  - by liori

  Hello, I'd like to take audio track from a video clip in FLV container and save it to something playable by portable music players. Are there any easy to use tools for that? I know how to do that using console tools (mplayer+lame/oggenc), but I'd like to get something clickable, preferably for GNOME. Thanks!

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• Audio organizing via CLI

  - by Radek Šimko

  I'm looking for some software for my OpenSUSE, which with I would be able to organize my audio files. I've found one, which may be good, but it's unable to run without X server (in CLI). http://musicbrainz.org/doc/MusicBrainz_Picard I'm not looking for ID3 renamers. There're maybe hundreds of them... I'm looking for software, which has its own database, or is able to communicate with some database, like CDDB, Gracenote, last.fm etc.

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• Need to balance volume on both audio channels in video file

  - by Tony_Henrich

  I have a video file where one audio channel is much louder than the other. Which app can I use to allow me to take the louder channel and place on the low channel? I know it won't be stero anymore but mono sound on both channels is better than unbalanced stereo channel

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• MPlayer refuses to generate mono wav file

  - by JCCyC

  I want to downsample an existing audio file to 8KHz mono. This command line downsamples it to stereo: mplayer -quiet -vo null -vc dummy -af volume=0,resample=8000:0:1 -ao pcm:waveheader:file="/tmp/blah1.wav" ~/from_my_cellphone.3ga It generates a file that the file utility identifies as stereo: $ file /tmp/blah1.wav /tmp/blah1.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, stereo 8000 Hz Now, if I read the documentation correctly, I should add pan=1:0.5:0.5 so I get a file that's half the size: mplayer -quiet -vo null -vc dummy -af volume=0,resample=8000:0:1:pan=1:0.5:0.5 -ao pcm:waveheader:file="/tmp/blah2.wav" ~/from_my_cellphone.3ga But it doesn't! blah2.wav is identical to blah1.wav! What am I doing wrong?

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• Reading audio with Extended Audio File Services (ExtAudioFileRead)

  - by Paperflyer

  I am working on understanding Core Audio, or rather: Extended Audio File Services Here, I want to use ExtAudioFileRead() to read some audio data from a file. This works fine as long as I use one single huge buffer to store my audio data (that is, one AudioBuffer). As soon as I use more than one AudioBuffer, ExtAudioFileRead() returns the error code -50 ("error in parameter list"). As far as I can figure out, this means that one of the arguments of ExtAudioFileRead() is wrong. Probably the audioBufferList. I can not use one huge buffer because then, dataByteSize would overflow its UInt32-integer range with huge files. Here is the code to create the audioBufferList: AudioBufferList *audioBufferList; audioBufferList = malloc(sizeof(AudioBufferList) + (numBuffers-1)*sizeof(AudioBuffer)); audioBufferList->mNumberBuffers = numBuffers; for (int bufferIdx = 0; bufferIdx<numBuffers; bufferIdx++ ) { audioBufferList->mBuffers[bufferIdx].mNumberChannels = numChannels; audioBufferList->mBuffers[bufferIdx].mDataByteSize = dataByteSize; audioBufferList->mBuffers[bufferIdx].mData = malloc(dataByteSize); } UInt32 numFrames = fileLengthInFrames; error = ExtAudioFileRead(extAudioFileRef, &numFrames, audioBufferList); Do you know what I am doing wrong here?

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• Encode and Decode using UTF-8 in iphone

  - by Ekra

  Hi friends, I wanted an example were in I can encode and then decode the same string using UTF-8. Encode and then Decode means I want to implement the method in 2 area were one can encode it and other is able to decode it. I have seen the API but I didnt get much success:- StringWithCString:encoding: stringWithUTF8String: stringWithCString:(const char *)cString encoding:(NSStringEncoding)enc; =================EDITED================= I have string as "øæ-test-2.txt" . when I am encoding it char *s = "øæ-test-2.txt"; NSString *enc = [NSString stringWithCString:s encoding:NSASCIIStringEncoding]; I am getting "øæ-test-2.txt" as output. Now I want to get back the original string back i.e. "øæ-test-2.txt" +++++++++EDITED+++++++++++++++++++ I am getting "øæ-test-2.txt" from server and I need "øæ-test-2.txt" by decoding it . I am able to get the output from the link below http://www.cafewebmaster.com/online_tools/utf_decode Please try to use the link and u will understand my concern. I need the solution on urgent basis. It would be highly appreciated if anyone can give some hint or tutorial in right direction. Regards

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• StAX - Setting the version and encoding using XMLStreamWriter

  - by Anurag

  Hi, I am using StAX for creating XML files and then validating the file with and XSD. I am getting an error while creating the XML file: javax.xml.stream.XMLStreamException: Underlying stream encoding 'Cp1252' and input paramter for writeStartDocument() method 'UTF-8' do not match. at com.sun.xml.internal.stream.writers.XMLStreamWriterImpl.writeStartDocument(XMLStreamWriterImpl.java:1182) Here is the code snippet: XMLOutputFactory xof = XMLOutputFactory.newInstance(); try{ XMLStreamWriter xtw = xof.createXMLStreamWriter(new FileWriter(fileName)); xtw.writeStartDocument("UTF-8","1.0");} catch(XMLStreamException e) { e.printStackTrace(); } catch(IOException ie) { ie.printStackTrace(); } I am running this code on unix. Does anybody know how to set the version and encoding style.

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• iPhone Audio Queue Service sample units

  - by pion

  I am looking at Audio Queue Services document specifically on the following code: // Writing an audio queue buffer to disk AudioFileWritePackets ( // 1 pAqData->mAudioFile, // 2 false, // 3 inBuffer->mAudioDataByteSize, // 4 inPacketDesc, // 5 pAqData->mCurrentPacket, // 6 &inNumPackets, // 7 inBuffer->mAudioData // 8 ); inBuffer-mAudioDataByteSize is the number of bytes of audio data being written. inBuffer-mAudioData is the new audio data to write to the audio file. Assuming the sample rate is 44100. AudioStreamBasicDescription mDataFormat; mDataFormat.mSampleRate = 44100.0f; mDataFormat.mBitsPerChannel = 16; ... NSInteger numberSamples = inBuffer->mAudioDataByteSize / 2; SInt16 *audioSample = (SInt16 *)inBuffer->mAudioData; I use core-plot to plot the above where x axis is number of sample [1 .. numberSamples] and the y axis is audioSample[0] .. audioSample[numberSamples]. I can see the chart in "real-time" where the y axis goes up and down depending the loudness of my voice. Beginner questions: What does the audioSample represent? What am I looking at here? What is the unit of audioSample? What do I need to do if I just want to plot the range between 50 - 100 Hz? Thanks in advance for your help.

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• Progressive download using Matt Gallagher's audio streamer

  - by Fernando Valente

  I'm a completely n00b when talking about audio. I'm using Matt Gallagher's audio streamer on my radio app. How may I use progressive download? Also, ExtAudioFile is a good idea too :) Edit: Used this: length = CFReadStreamRead(stream, bytes, kAQDefaultBufSize); if(!data) data =[[NSMutableData alloc] initWithLength:0]; [data appendData:[NSData dataWithBytes:bytes length:kAQDefaultBufSize]]; Now I can save the audio data using writeToFile:atomically: NSData method, but the audio won't play. Also, if I try to load it on a AVAudioPlayer, I get an error.

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• Encoding issues with Spring and Freemarker

  - by Cameron

  I'm working on a project using Freemarker and Spring running on Jetty. It will involve displaying characters from many different countries so I'm trying to set the encoding to UTF-8. However, no matter what I do, it remains ISO-8859-1. I tried to create a filter in my web.xml and I've tried putting this response.setCharacterEncoding("UTF-8"); response.setContentType("text/html; charset=utf-8"); just before rendering the view. But when I load the page and click "View Page Info", the encoding is always ISO-8859-1. I've also tried hitting my app server directly to see if it was being affected by Apache but got the same result. Any help is appreciated.

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• Encoding::UndefinedConversionError from email body

  - by raam86

  using mail for ruby I am getting this message: mail.rb:22:in `encode': "\xC7" from ASCII-8BIT to UTF-8 (Encoding::UndefinedConversionError) from mail.rb:22:in `<main>' If I remove encode I get a message ruby /var/lib/gems/1.9.1/gems/bson-1.7.0/lib/bson/bson_ruby.rb:63:in `rescue in to_utf8_binary': String not valid utf-8: "<div dir=\"ltr\"><div class=\"gmail_quote\">l<br><br><br><div dir=\"ltr\"><div class=\"gmail_quote\"><br><br><br><div dir=\"ltr\"><div class=\"gmail_quote\"><br><br><br><div dir=\"ltr\"><div dir=\"rtl\">\xC7\xE1\xE4\xD5 \xC8\xC7\xE1\xE1\xDB\xC9 \xC7\xE1\xDA\xD1\xC8\xED\xC9</div></div>\r\n</div><br></div>\r\n</div><br></div>\r\n</div><br></div>" (BSON::InvalidStringEncoding) This is my code: require 'mail' require 'mongo' connection = Mongo::Connection.new db = connection.db("DB") db = Mongo::Connection.new.db("DB") newsCollection = db["news"] Mail.defaults do retriever_method :pop3, :address => "pop.gmail.com", :port => 995, :user_name => 'my_username', :password => '*****', :enable_ssl => true end emails = Mail.last #Checks if email is multipart and decods accordingly. Put to extract UTF8 from body plain_part = emails.multipart? ? (emails.text_part ? emails.text_part.body.decoded : nil) : emails.body.decoded html_part = emails.html_part ? emails.html_part.body.decoded : nil mongoMessage = {"date" => emails.date.to_s , "subject" => emails.subject , "body" => plain_part.encode('UTF-8') } msgID = newsCollection.insert(mongoMessage) #add the document to the database and returns it's ID puts msgID For English and Hebrew it works perfectly but it seems gmail is sending arabic with different encoding. Replacing UTF-8 with ASCII-8BIT gives a similar error. I get the same result when using plain_part for plain email messages. I am handling emails from one specific source so I can put html_part with confidence it's not causing the error. To make it extra weird Subject in Arabic is rendered perfectly. What encoding should I use?

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• What is PTS in reference to video encoding?

  - by jtrim

  Could someone briefly explain what the acronym PTS means in reference to video encoding?

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• audio processing in iPhone

  - by Janaka

  I am writing an iPhone application to apply filters to audio input and output the result in real time. I am new to audio processing but using audiounit, the correct approach? I found out how to output data using audiounit but couldn’t figure out how to capture input audio. Is there a sample application showing how to connect input and output using audiounit?

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• options for producing audio with GWT

  - by Kaffeine Coma

  What options are there for producing audio in a GWT app? I'm thinking of making a simple game, but I'm disappointed to see that there's still not much progress on audio support directly in GWT (yes, I realize that's largely due to lack of underlying browser support; looking forward to HTML5!) This blog post says that "audio support in GWT is rapidly evolving", yet I don't see updates in over a year, at least not at that site. It seems these are the available options: GWT Voices GWT SoundManager GWT Sound GWT Incubator I believe most of these (all of them?) rely on Flash to produce audio. I'm most inclined to go with the GWT Incubator, as that's where features slated for inclusion in GWT get started, but I've no real recommendations to go on. I would appreciate hearing about your experiences with any of these libraries, thanks.

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• html5 audio player - jquery toggle click play/pause???

  - by mathiregister

  hello guys, i wonder what i'm doing wrong? $('.player_audio').click(function() { if ($('.player_audio').paused == false) { $('.player_audio').pause(); alert('music paused'); } else { $('.player_audio').play(); alert('music playing'); } }); i can't seem to start the audio track if i hit the "player_audio" tag. <div class='thumb audio'><audio class='player_audio' src='$path/$value'></audio></div> any idea what i'm doing wrong or what i have to do to get it working?

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• Dealing with ISO-encoding in AJAX requests (prototype)

  - by acme

  I have a HTML-page, that's encoded in ISO-8859-1 and a Prototype-AJAX call that's build like this: new Ajax.Request('api.jsp', { method: 'get', parameters: {...}, onSuccess: function(transport) { var ajaxResponse = transport.responseJSON; alert(ajaxResponse.msg); } }); The api.jsp returns its data in ISO-8859-1. The response contains special characters (German Umlauts) that are not displayed correctly, even if I add a "encoding: ISO-8895-1" to the AJAX-request. Does anyone know how to fix this? If I call api.jsp in a new browser window separately the special characters are also corrupt. And I can't get any information about the used encoding in the response header. The response header looks like this: Server Apache-Coyote/1.1 Content-Type application/json Content-Length 208 Date Thu, 29 Apr 2010 14:40:24 GMT Notice: Please don't advice the usage of UTF-8. I have to deal with ISO-8859-1.

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• Text encoding problem between NSImage, NSData, and NSXMLDocument

  - by andyvn22

  I'm attempting to take an NSImage and convert it to a string which I can write in an XML document. My current attempt looks something like this: [xmlDocument setCharacterEncoding: @"US-ASCII"]; NSData* data = [image TIFFRepresentation]; NSString* string = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding]; //Put string inside of NSXMLElement, write out NSXMLDocument. Reading back in looks something like this: NSXMLDocument* newXMLDocument = [[NSXMLDocument alloc] initWithData:data options:0 error:outError]; //Here's where it fails. I get: //Error Domain=NSXMLParserErrorDomain Code=9 UserInfo=0x100195310 "Line 7: Char 0x0 out of allowed range" I assume I'm missing something basic. What's up with this encoding issue?

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• Apache deflate with chucked encoding

  - by hoodoos

  I'm expiriencing some problem with one of my data source services. As it says in HTTP response headers it's running on Apache-Coyote/1.1. Server gives responses with Transfer-Encoding: chunked, here sample response: HTTP/1.1 200 OK Server: Apache-Coyote/1.1 Content-Type: text/xml;charset=utf-8 Transfer-Encoding: chunked Date: Tue, 30 Mar 2010 06:13:52 GMT And problem is when I'm requesting server to send gzipped request it often sends not full response. I recieve response, see that last chunk recived, but then after ungzipping I see that response is partial. So my question is: is it common apache issue? maybe one of it's mod_deflate plugins or something? Ask questions if you need more info. Thanks.

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