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    10 sounds
    6 posts

    Does it just take a while for them to accept it?

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    2034 sounds
    1843 posts

    Unfortunately more like Stephen Hawking than Don la Fontaine ... http://www.freesound.org/samplesViewSingle.php?id=82612

  • avatar
    1862 sounds
    2024 posts

    Hello nemoDaedalus,

    Great discussion here. Plenty of things for me to try when I get home!

    I know exactly what you mean when you say the waveform is flipped.

    Some graphics programs may allow you to "cycle" the colours, so that you can start with a "black picture with a blurry white line on it" and then cycle through the (gryescale). Shifting throug the grayscale like this, you can obtain a file where the soundwave is positioned correctly.

    I used to have the same problem of flipped waveforms when I tried to import audio files from the PC into an Amiga computer.

    Rather than start a new thread, should we ask one of the moderators to move the thread to a more suitable Forum?
    Would you be interested in doing some collaboration on image-to-sound and sound-to-image ?

    Cesar / AlienXXX

  • avatar
    18 sounds
    455 posts

    Yes of course, makes sense. I had some fun trying to get a Blender 'Wood' texture (basically a series of black and white wavy lines, with some minor noise) to audio, but GIMP wouldn't allow me to use 'raw' as extension. Tiff worked rather well, but I do believe bmp should be pretty raw (afaik, it's simply a list of bgr (blue green red) codes in a continuous line), but haven't tried it. Another problem was, while it produced some remarkable sound-like waves, the waves were 'inverted', meaning what's usually the top part of a wave was way at the bottom and the bottom part was at the top. This produced a nasty noise, while the underlying sound was fairly interesting.
    I did some experiments in the past converting audio to text (very short samples) and found that for 16 bit samples the center line has hex value 0000, -15 dB(fs) on the plus side has value 16C3, -3 dB on the plus side has value 5A9F, 0 dB on the plus side (max height) is 7FFF and the next number in line, 8000 corresponds to 0 dB (max height) on the minus side, so it completely flips the wave here.
    So you have
    0000 - 7FFF is center line - 0 dB plus
    8000 - FFFF is 0 dB minus - center line

    That should mean if you have a black image with a white, blurry line on it, everything that's black is on the center line, where the blurring starts, the wave goes up towards the top. Where the blurry part is 50% grey, the wave hits the top and flip down to the bottom at the next sample. From there it continues up again until full white. From there the blurring starts again back to black, the wave going down towards bottom, where the blurry is grey again, the wave hits bottom and jumps up to the top on next sample. As blurring goes down into black, wave goes back to center line.
    In theory! (If I understand correctly) This seems to be correct with my earlier test in mind, the image went from black to white and back a few times, all the time flipping the wave when it hit top or bottom.
    I should do some more tests.
    And maybe we should do this in a new thread tongue

  • avatar
    18 sounds
    455 posts

    Cool, Blender rocks grin

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    0 sounds
    15 posts

    shawshank73
    Well, I don't have much of a Don La Fontain voice (I'm sure Alpha's would suit it better), but I can give it a try. Maybe tonight when I get home from work or Saturday. smile

    Thanks, that would mean much to me smile

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    42 sounds
    82 posts

    Well, I don't have much of a Don La Fontain voice (I'm sure Alpha's would suit it better), but I can give it a try. Maybe tonight when I get home from work or Saturday. smile

  • avatar
    1862 sounds
    2024 posts

    The answer is NOT straightforward.

    With the process I mentioned on my post, the sounds are converted from the original format (say, WAV) to RAW.
    This means that some important info is lost in the process, such as bit depth and sample rate. Even a sound editor will require you to supply this information manually if you load it up again.

    The same applies to a graphics program importing RAW files: user needs to provide some parameters to the program so it can make sense of the data.

    To answer your question.
    Even the the exact same RAW file can be made to look quite different when imported as a picture - this because the RAW format file contains no indicators which will allow the graphics program to make sense of the data. Therefore, it will ask the user to provide image widht, heigh, bit depth and "colour encoding" (there are different standards:black&white, RGB, Luma/Chroma,...). Enter different parameters and you get different images.

    For a sound made up of a simple constant waveform, you should obtain an image that clearly shows a "pattern". Especially if imported as a black and white picture. When I am at home later I will try to upload some pictures which illustrate what I am talking about.
    The patterns can be less obvious for complex sounds (e.g. piano). And you may be unable to obtain a pattern from less harmonic sounds such as a cymbal or speech.

    By the way, if anyone uses VST plugins and wants to explore further the image to sound conversion and vice-versa, the KVR Dec plugin competition is now on. Some of the entries are VST plugnis that do precisely these conversions.
    Due to interference from the day job :wink: , I have not tried these VSTs yet, but anyone can download them for free. Have a look at
    http://www.kvraudio.com/developer_challenge_2009.php

    This conversation has obviously enticed me to go back and create some noise using these processes.
    Will be posting the results with the tag "image-to-sound" on Freesound. Expect some uploads after the weekend...

  • avatar
    2 sounds
    4 posts

    Hi,

    Cheers Matt_G for the sound sample smile

    http://www.veoh.com/browse/videos/category/animation/watch/v19329617kcN8pNqm

    regards
    Stuart

  • avatar
    2 sounds
    4 posts

    Hi,
    I'm into blender animations, and made one using a sample from this site.

    Cheers Matt_G for the sound sample smile

    I cannot actually post the link in my first post due to anti spambot measures, so this post will serve as an intro.
    I am a home educating dad from the uk, my kids and I are into animation and would like to start producing more audio to go with it. We have a copy of reason 4...but always get sucked into using either firefox or blender !! smile
    regards
    Stuart

  • avatar
    18 sounds
    455 posts

    That sounds interesting. I haven't done much experimenting with this in the past, but I'll try it.
    How about reversing the process? What image do you get if you import a simple sine wave, for example?

  • avatar
    435 sounds
    344 posts

    AlienXXX
    Hello,

    My sounds have not appeared yet.
    Judging by the unusually low number of sounds in the "Additions in last 48 hours" list I suspect the uploads are not working correctly.
    Anyone else experiencing the same problem?

    Whatever it was.... all seems normal now.

    Thanks

    As far as i know, it takes a moderator to go through the sounds, before they are approved. Only then will they show up. Sometimes you're lucky to have them approved quickly, other times the moderators really have some IRL business to take care of wink

  • avatar
    0 sounds
    15 posts

    Hey, i was just wondering if you guys wants to read a script for me?
    Its like this: Pacino the movie. Coming out, December 24th two thousand nine. Brought to your screen by Pacino Productions, associated with Heinz Productions.
    You can make a small pause at the dots (.) Im gonna edit it so it fits with our music background.
    It would be nice if you could make it so i was like a movie trailer voice. Like Don La Fontain., That would be awsome smile
    Uh and i would put your name at the text part of the movie, just to say thanks smile

  • avatar
    1862 sounds
    2024 posts

    Hello,

    My sounds have not appeared yet.
    Judging by the unusually low number of sounds in the "Additions in last 48 hours" list I suspect the uploads are not working correctly.
    Anyone else experiencing the same problem?

    Whatever it was.... all seems normal now.

    Thanks

  • avatar
    1862 sounds
    2024 posts

    Hello All,

    Slightly related subject... so I decided to post here in case anyone finds it useful.
    Many (and i mean MANY) years ago I toyed with converting images to sounds and vice-versa. I produced a couple of really nice samples (which by the way, I will now track and post in freesound grin ).

    The idea of getting involved with programming or compiling any code in order to do this freezes the blood in my veins... So if you are like me, read on for an alternative process...

    1) Find a graphics program that supports saving in RAW format. - plenty of free ones should be available or you may already have one that supports this format.
    2) Find a sound editor that supports RAW format. - Again, you should be able to find a free one or maybe your current one already supports this format.
    3) Use the graphics program to convert your picture to RAW
    4) Load it up into the sound editor.

    Some hints on picture to sound convertion:
    I have found that "texture" sort of pictures tend to produce the best results. (The sort of pics that you would use as tiles for a Windows backdrop). Photos of yourself or your cat are more likely to sound as raw data (which, of course is what they are). The sort of seamless wood, stone, water or other textures for backdrops tend to produce a more "textured noise" sort of result.
    Also, I would suggest using black and white pics or converting to black and white (alternatively, you can save only the Red, Green or Blue component of your picure, if your graphics software allows this option). The reason for this is that the graphics program will save the three colour layers (R,G,B) and usually a further luminance layer in sequence for colour pics. When converted to audio, you end up with a sound that contains 3 or 4 nearly identical bursts of noise. Of course you can save as coulor and then simply edit the sound to cut any unwanted parts.

    If you are doing the opposite process - i.e., trying to load up a soundfile as a picture
    1) convert the sound file to RAW format and save using the sound editor program
    2) load it up into the graphics program. - at this point the graphics program will probably ask you for the size (width x height) of the picture, colour depth and weather it is B&W or Colour. (This because when saved as RAW there is no information on the file from which the graphics program can extract these settings). You may have to experiment with different import parameters to get the most "usable" pictures.

    Hints:
    Suggest you import as B&W - colour will usually produce pictures that just look like random noise since the sound data will be split into 3 or 4 chunks and assigned to R, G, B and possible luminance.
    Experiment with importing the same sound file with different weight x height and bit depth combinations. (if you are a bit of a geek, you can even work the best combinations out using the file size, so you do not cut part of the data out or end up with a portion of blank space at the end of the picture).
    What I would look for and I suggest produces best results is to experiment with different import parameters until you get a B&W picture where you can clearly see a "pattern". This works with tonal monophonic sounds such as a note from a guitar, bass or flute. Generlly it will not work well with noise, tracks containing multiple instruments or atonal sounds like drums).
    When you have obtained one such picture with a more or less obvious pattern, applying image processing effects such as contrast, blur, pixelate or smear is more likely to produce a result which, when converted back to sound still retains some "musicality".
    If you do any "image" processing on your sound file wthout first having obtained this "patternet picture" the result wil, almost always just sound as raw noise when converted back to audio.

    Have fun !!!

  • avatar
    0 sounds
    5 posts

    No one able to compile a Mac intel binary for us ? Please ? wink

    Bye.

  • avatar
    0 sounds
    1 post

    I absolutely love this site! In my view it's one of the best on the Internet. Any idea when Freesound will be hosting another competition? I'd love to get my teeth (or should that be ears) stuck into a challenging project.

    gary

  • avatar
    77 sounds
    18 posts

    Oade has a good FAQ on microphones. Doesn't seem to stock the H4n.

    - Paul

  • avatar
    1862 sounds
    2024 posts

    HEllo,

    I uploaded a couple of sounds almost 24h ago but these have not appeared yet.
    Normally the process is much faster. Have these sounds been rejected or do these things simply take more time sometimes.

    Thanks
    AlienXXX

  • avatar
    12 sounds
    13 posts

    And of course, you guys get to hear it when finished. One thing that bugs me though is WHY THE HELL DOESN'T HE POST ON THE FORUMS!?!?