EMUSIC-L Digest Volume 58, Issue 27 This issue's topics: sound-to-image (3 messages) Your EMUSIC-L Digest moderator is Joe McMahon . You may subscribe to EMUSIC-L by sending mail to listserv@american.edu with the line "SUB EMUSIC-L your name" as the text. The EMUSIC-L archive is a service of SunSite (sunsite.unc.edu) at the University of North Carolina. ------------------------------------------------------------------------ Date: Mon, 8 Nov 1993 10:38:10 -0500 From: Marty Hicks Subject: sound-to-image Excuse me for just jumping in (I sent this to EMUSIC-D but my message returned unsent). My interest is in finding or writing an algorithm that will change a sound file into an image file. I work on a Mac. Any ideas or leads? Marty (martyh@pantry.mcad.edu) ------------------------------ Date: Mon, 8 Nov 1993 11:52:18 -0600 From: Arne Claassen ISE Subject: Re: sound-to-image > Excuse me for just jumping in (I sent this to EMUSIC-D but my message returned > unsent). My interest is in finding or writing an algorithm that will change a > sound file into an image file. I work on a Mac. Any ideas or leads? First, assumption: You are trying to get a image representation of the digital data of a sound, not trying to display the waveform. I don't really know of a program although it sounds like an interesting idea, such as using the timeline as x and the frequency the color depth. The lacks y, so just do a sort of datawrap at the end of each line. This method would lack any logical consistency in the y-axis, while it would represent the flor of data in the x-axis. Anyone got a better idea of transforming it into x, y and color depth. One simple way to force it into a picture might be using something like Photoshop and taking the raw data and loading it as "raw" format picture and see what Photoshop does with it. -- -------------------------------------------------------------------------- |Arne F. Claassen | | | | "It is by my will alone I set my mind in motion" | | finger for PGP public key | -------------------------------------------------------------------------- . ------------------------------ Date: Tue, 9 Nov 1993 13:27:02 GMT From: Andy Farnell Subject: Re: sound-to-image > My interest is in finding or writing an algorithm that will change a > sound file into an image file. I work on a Mac. Any ideas or leads? > Marty > (martyh@pantry.mcad.edu) The most obvious thing that comes to mind is a spectrogram, I have seen some nice colour ones created in real time on a 486 using a TMS320 dsp board but it may well be possible to do something quite good on a Mac. Spectrograms are nice because there is an obvious mapping between sound and image but I suppose it depends on what you are trying to do, What about time plots (ie oscilloscope type patterns) or 3D spectral plots ? andy farnell computing and cognition bournemouth university ------------------------------ End of the EMUSIC-L Digest ******************************