In fact the spectral slope will be inverted and the high frequency noise will be dominating the harmonic structure - even more noise! All notes not played will be in fact all notes with all possible note frequencies (not restricted to any musical notion of harmony or grid or scale) - so this is noise!Īdditionally, you don’t get these too many remaining notes with their original spectrum. That asks to receive only the notes not played using as reservoir a conventional note system. There is no way to implement the constraint in the original question: étant donné un nombre convenu conventionnel de notes de musique n’entendre que le groupe de celles qui ne sont pas jouées Unfortunately, this cannot be accepted as a valid answer to the given problem: It will always output a whole lot of noise. So taking a screen shot of the original spectrogram, inverting it and using it as a filter twice on the original sound (once for getting to the amplitude to constant 0 dB and a second time to get into the opposite amplitude) would be the implementation in the image filter setup. So you’d better shift this down by some constant value (AudioSculpt norm output flag). Given the original log amplitude is 0 at maximum and 120 at minimum, inverting this gives you up to 120dB for all low parts of the sound and 0 dB as smallest amplitude. You would need to normalize to avoid having extreme output sounds. For inverting log amplitudes you may use AS’ filtering with images. In fact you would want to use log amplitudes (even then it will not be the answer, but we come to this below). It could also be the STFT inversion throws away the sign of the amplitudes (because amplitudes by convention are non-negative) in which case you will get the original signal (even less dramatic as effect). If you keep the original phases and the inverse STFT correctly handles negative amplitudes you will get the original signal multiplied by -1. If we take the negative of the linear amplitudes then it depends what you do with it. The negative of the spectrogram is not an answer for multiple reasons. The following is a non-exhaustive list of what has been found that can be done using Photosounder.I think the short answer to Diemo’s question is “NO”! A demo version is available, with the ability to save the resulting sound to file disabled, and a short silence inserted every 12 seconds. It can also run on Linux using the latest development release of Wine. Photosounder is available for Windows (2000, XP, Server 2003 and Vista), Mac OS X 10.4+ Universal (Tiger, Leopard, Snow Leopard, on both PowerPC and Intel machines). This groundbreaking approach is what allows us to push the boundary of what we thought was possible. Photosounder turns sound processing problems into image processing challenges, and brings the power and flexibility of familiar image processing tools to the creation and transformation of sounds. Photosounder is a cutting edge spectral editing program, offering the best spectrogram editing and synthesis capabilities, making use of unique spectrograph, synthesis and filtering algorithms developed specifically to achieve the best results possible. Ultimately, knowing how sounds look and how images sound, you'll be able to create images that sound like what you want to hear, or like what you couldn't imagine to hear. Sounds, once turned into images, can be powerfully modified to achieve effects and results that couldn't be obtained in any other way, while images of all sorts reveal the infinite kinds of otherworldly sounds they contain. It is unique in that it opens images and sounds indiscriminately, treats and processes them as images, and synthesizes them as sounds. Photosounder is a one-of-a-kind image-sound editing program. Top Software Keywords Show more Show less
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