Re: [Flashcoders] How to compare two audio files with actionscript?
Where are the Actionscript Sages when you need them :( On Mon, Aug 10, 2009 at 10:25 AM, johnny lee jlee...@gmail.com wrote: Thanks Latcho, can you please describe the process a little bit. What actually is going on? How is the FFT used to compare the wav files? Is it comparing header data or something? And what about MP3 files, can they be used instead of wav? Thanks, juju P.S. Has to be AS3, trying to make a Flash RIA. On Thu, Aug 6, 2009 at 3:42 AM, Latcho spamtha...@gmail.com wrote: I'd suggest you first get down in audio math and algorithms and indeed FFT. If you're done with that... choose whatever language you like and preferably a faster one then AS3. But it is not impossible to answer your question. johnny lee wrote: Hi All, how do you compare two audio files with actionscript? I heard something about Fast Fourier Transform, but don't understand how it works. What I'm trying to do is a basic voice recognition programme, similar to the one on symbian mobile phones where you can give word commands to your phone. Can this be done in actionscript? Thanks and cheers, juju ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] How to compare two audio files with actionscript?
have you seen anything like this? http://www.communitymx.com/content/article.cfm?cid=8E9A0 just trying to get a feel for what you are trying to do a On 10 Aug 2009, at 09:35, johnny lee wrote: Where are the Actionscript Sages when you need them :( On Mon, Aug 10, 2009 at 10:25 AM, johnny lee jlee...@gmail.com wrote: Thanks Latcho, can you please describe the process a little bit. What actually is going on? How is the FFT used to compare the wav files? Is it comparing header data or something? And what about MP3 files, can they be used instead of wav? Thanks, juju P.S. Has to be AS3, trying to make a Flash RIA. On Thu, Aug 6, 2009 at 3:42 AM, Latcho spamtha...@gmail.com wrote: I'd suggest you first get down in audio math and algorithms and indeed FFT. If you're done with that... choose whatever language you like and preferably a faster one then AS3. But it is not impossible to answer your question. johnny lee wrote: Hi All, how do you compare two audio files with actionscript? I heard something about Fast Fourier Transform, but don't understand how it works. What I'm trying to do is a basic voice recognition programme, similar to the one on symbian mobile phones where you can give word commands to your phone. Can this be done in actionscript? Thanks and cheers, juju ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] How to compare two audio files with actionscript?
Hi Allandt, Thanks for the article link. I read through and pls correct me if I'm wrong: You can take a snapshot of an audio file with the computeSpectrum() method and place that data in a ByteArray object, is this right? So, now my question is, can you take snapshots of two audio files and compare their ByteArray objects, and then perform an action based on the comparison? Like, the ByteArray objects match up 90% then trigger this event. Muchos gracias, juju On Mon, Aug 10, 2009 at 6:24 PM, Allandt Bik-Elliott (Receptacle) alla...@receptacledesign.com wrote: have you seen anything like this? http://www.communitymx.com/content/article.cfm?cid=8E9A0 just trying to get a feel for what you are trying to do a On 10 Aug 2009, at 09:35, johnny lee wrote: Where are the Actionscript Sages when you need them :( On Mon, Aug 10, 2009 at 10:25 AM, johnny lee jlee...@gmail.com wrote: Thanks Latcho, can you please describe the process a little bit. What actually is going on? How is the FFT used to compare the wav files? Is it comparing header data or something? And what about MP3 files, can they be used instead of wav? Thanks, juju P.S. Has to be AS3, trying to make a Flash RIA. On Thu, Aug 6, 2009 at 3:42 AM, Latcho spamtha...@gmail.com wrote: I'd suggest you first get down in audio math and algorithms and indeed FFT. If you're done with that... choose whatever language you like and preferably a faster one then AS3. But it is not impossible to answer your question. johnny lee wrote: Hi All, how do you compare two audio files with actionscript? I heard something about Fast Fourier Transform, but don't understand how it works. What I'm trying to do is a basic voice recognition programme, similar to the one on symbian mobile phones where you can give word commands to your phone. Can this be done in actionscript? Thanks and cheers, juju ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
RE: [Flashcoders] How to compare two audio files with ActionScript?
Johnny lee wrote: Where are the Actionscript Sages when you need them :( They're here. I know ActionScript reasonably well, but haven't used the FFT formulas. Writing the code to compare audio files is going to be rather involved, I'm afraid. We can provide pointers, but, since it's your program, I'm afraid you're stuck with the heavy lifting. To get started, Google is your friend--AS3 FFT turned up these, among others: http://labs.adobe.com/wiki/index.php/Talk:ActionScript_3#computeSpectrum_an d_FFT http://forums.adobe.com/thread/242954 http://summitprojectsflashblog.wordpress.com/2008/07/31/wave-theory-in-acti onscript-3/ Cordially, Kerry Thompson ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] How to compare two audio files with actionscript?
Hi, computeSpectrum will only do small chunks at a time - it might not give you the spectrum from the whole wave form. If you are trying to do Voice Recognition, you will need some serious computing power and ActionScript may, or may not be too slow to handle this. It certainly won't work in realtime so don't expect miracles with the AVM. Speech recognition may use FFT's to help match up parts of the sound to pre-recorded samples, but that's as far as my knowledge goes. Your best bet is to look at places like http://www.voxforge.org/ and google for speech recognition, etc. Depending on your RIA, you could always find a way of cheating possibly... ...e.g. find a speech-to-text engine and write a small application that pipes the output into Flash, etc. Glen johnny lee wrote: Hi Allandt, Thanks for the article link. I read through and pls correct me if I'm wrong: You can take a snapshot of an audio file with the computeSpectrum() method and place that data in a ByteArray object, is this right? So, now my question is, can you take snapshots of two audio files and compare their ByteArray objects, and then perform an action based on the comparison? Like, the ByteArray objects match up 90% then trigger this event. Muchos gracias, juju On Mon, Aug 10, 2009 at 6:24 PM, Allandt Bik-Elliott (Receptacle) alla...@receptacledesign.com wrote: have you seen anything like this? http://www.communitymx.com/content/article.cfm?cid=8E9A0 just trying to get a feel for what you are trying to do a On 10 Aug 2009, at 09:35, johnny lee wrote: Where are the Actionscript Sages when you need them :( On Mon, Aug 10, 2009 at 10:25 AM, johnny lee jlee...@gmail.com wrote: Thanks Latcho, can you please describe the process a little bit. What actually is going on? How is the FFT used to compare the wav files? Is it comparing header data or something? And what about MP3 files, can they be used instead of wav? Thanks, juju P.S. Has to be AS3, trying to make a Flash RIA. On Thu, Aug 6, 2009 at 3:42 AM, Latcho spamtha...@gmail.com wrote: I'd suggest you first get down in audio math and algorithms and indeed FFT. If you're done with that... choose whatever language you like and preferably a faster one then AS3. But it is not impossible to answer your question. johnny lee wrote: Hi All, how do you compare two audio files with actionscript? I heard something about Fast Fourier Transform, but don't understand how it works. What I'm trying to do is a basic voice recognition programme, similar to the one on symbian mobile phones where you can give word commands to your phone. Can this be done in actionscript? Thanks and cheers, juju ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] How to compare two audio files with actionscript?
Thanks All, this looks harder than I first thought it would be. Guess there's no straighfoward solution. On Mon, Aug 10, 2009 at 11:04 PM, Glen Pike g...@engineeredarts.co.ukwrote: Hi, computeSpectrum will only do small chunks at a time - it might not give you the spectrum from the whole wave form. If you are trying to do Voice Recognition, you will need some serious computing power and ActionScript may, or may not be too slow to handle this. It certainly won't work in realtime so don't expect miracles with the AVM. Speech recognition may use FFT's to help match up parts of the sound to pre-recorded samples, but that's as far as my knowledge goes. Your best bet is to look at places like http://www.voxforge.org/ and google for speech recognition, etc. Depending on your RIA, you could always find a way of cheating possibly... ...e.g. find a speech-to-text engine and write a small application that pipes the output into Flash, etc. Glen johnny lee wrote: Hi Allandt, Thanks for the article link. I read through and pls correct me if I'm wrong: You can take a snapshot of an audio file with the computeSpectrum() method and place that data in a ByteArray object, is this right? So, now my question is, can you take snapshots of two audio files and compare their ByteArray objects, and then perform an action based on the comparison? Like, the ByteArray objects match up 90% then trigger this event. Muchos gracias, juju On Mon, Aug 10, 2009 at 6:24 PM, Allandt Bik-Elliott (Receptacle) alla...@receptacledesign.com wrote: have you seen anything like this? http://www.communitymx.com/content/article.cfm?cid=8E9A0 just trying to get a feel for what you are trying to do a On 10 Aug 2009, at 09:35, johnny lee wrote: Where are the Actionscript Sages when you need them :( On Mon, Aug 10, 2009 at 10:25 AM, johnny lee jlee...@gmail.com wrote: Thanks Latcho, can you please describe the process a little bit. What actually is going on? How is the FFT used to compare the wav files? Is it comparing header data or something? And what about MP3 files, can they be used instead of wav? Thanks, juju P.S. Has to be AS3, trying to make a Flash RIA. On Thu, Aug 6, 2009 at 3:42 AM, Latcho spamtha...@gmail.com wrote: I'd suggest you first get down in audio math and algorithms and indeed FFT. If you're done with that... choose whatever language you like and preferably a faster one then AS3. But it is not impossible to answer your question. johnny lee wrote: Hi All, how do you compare two audio files with actionscript? I heard something about Fast Fourier Transform, but don't understand how it works. What I'm trying to do is a basic voice recognition programme, similar to the one on symbian mobile phones where you can give word commands to your phone. Can this be done in actionscript? Thanks and cheers, juju ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] How to compare two audio files with actionscript?
I'd suggest you first get down in audio math and algorithms and indeed FFT. If you're done with that... choose whatever language you like and preferably a faster one then AS3. But it is not impossible to answer your question. johnny lee wrote: Hi All, how do you compare two audio files with actionscript? I heard something about Fast Fourier Transform, but don't understand how it works. What I'm trying to do is a basic voice recognition programme, similar to the one on symbian mobile phones where you can give word commands to your phone. Can this be done in actionscript? Thanks and cheers, juju ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
RE: [Flashcoders] How to compare two audio files with ActionScript?
Latcho wrote: I'd suggest you first get down in audio math and algorithms and indeed FFT. If you're done with that... choose whatever language you like and preferably a faster one then AS3. AS3 may be fast enough. Its math classes are compiled to native code, and the loops will likely be compiled by the JIT compiler. Take a look at http://www.noteflight.com to see what can be done with music in real time, using AS3. I do believe the sounds are generated in real time using FFT. Cordially, Kerry Thompson ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] How to compare two audio files with actionscript?
Thanks Latcho, can you please describe the process a little bit. What actually is going on? How is the FFT used to compare the wav files? Is it comparing header data or something? And what about MP3 files, can they be used instead of wav? Thanks, juju P.S. Has to be AS3, trying to make a Flash RIA. On Thu, Aug 6, 2009 at 3:42 AM, Latcho spamtha...@gmail.com wrote: I'd suggest you first get down in audio math and algorithms and indeed FFT. If you're done with that... choose whatever language you like and preferably a faster one then AS3. But it is not impossible to answer your question. johnny lee wrote: Hi All, how do you compare two audio files with actionscript? I heard something about Fast Fourier Transform, but don't understand how it works. What I'm trying to do is a basic voice recognition programme, similar to the one on symbian mobile phones where you can give word commands to your phone. Can this be done in actionscript? Thanks and cheers, juju ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] How to compare two audio files with ActionScript?
Thanks Kerry, I'm still not understanding the process. What actually needs to take place in order to compare two audio files? How does FFT come into this? Thanks, juju On Mon, Aug 10, 2009 at 5:39 AM, Kerry Thompson al...@cyberiantiger.bizwrote: Latcho wrote: I'd suggest you first get down in audio math and algorithms and indeed FFT. If you're done with that... choose whatever language you like and preferably a faster one then AS3. AS3 may be fast enough. Its math classes are compiled to native code, and the loops will likely be compiled by the JIT compiler. Take a look at http://www.noteflight.com to see what can be done with music in real time, using AS3. I do believe the sounds are generated in real time using FFT. Cordially, Kerry Thompson ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
