OK, it's been nearly a week and nobody went to change the copyright status of the image I uploaded. If you don't agree, you can freely delete it and replace it with something more adequate. I don't know if it's copyrighted or not but as it was a nice and decent picture, I uploaded it. I'm not sure if I did well, but I found it here: And it might be safe to use (if it's on Wikipedia Common, then it means something).īut anyway, I saw that image removed so I tried to upload one again. I don't think I have the skills to fix the article with the existing picture, if that's suitable! JammyB 13:42, 23 April 2006 (UTC) I'd like to contribute but I don't want to go messing things up. There seems to already be a picture in Wikipedia Commons though. What's going on with the image for this page? I'm new to Wikipedia but I did my degree using this synthesiser and have a decent, self-made picture I'd like to upload. What gives? The image and the thumbnail both show as a big fat nothing! Did somebody go and peel a copyrighted image from another source and get squealed on? The DX7 indeed used phase modulation however, this is no "upgrade" of FM, hence I removed that part of the sentence I leave it to the EEs to discuss why FM and PM are basically two faces of the same coin and will spare the math for now.Ĩ7.177.143.13 22:08, (UTC)Rainer Buchty Image: of white space?
#HOUSE MUSIC DX7 PATCHES MOD#
The real need for phase mod is for pitch stability (especially between operators in one instrument where this is critical for long term accuracy in the sound) and also to avoid accumulating a DC offset, and to allow the feedback loop to work as intended, and to get consistent level scaling due to the mod index becoming independent of frequency if phase mod is used instead of frequency mod. Electricdruid 11:27, 13 January 2006 (UTC) Small point: the adding IS multiplying, it's just done in logarithmic domain because it's faster in integer arithmetic to do the scaling that way and convert to linear arithmetic for output. Since the DX7 adds it, it does use PM, not strictly FM. Having had a look at the maths, it seems to boil down to whether the modulation is multiplied with the increment (true FM) or added to it (PM). Whether this is FM or PM is a subject of some discussion over at Talk:Phase modulation.
The DX7 produces frequency modulation by using the output from another DDS oscillator to modify this phase increment. It is the rate of increment of this counter that determines the frequency of the oscillator. The crucial part of the DDS oscillator scheme is a binary counter called the 'phase accumulator'. This is done since all waveshapes have a linear relationship between phase and time, and linear relationships make the maths much simpler. These do indeed work by keeping track of the phase of the wave rather than its value. The DX7 uses what would now be called DDS oscillators ( Direct Digital Synthesis). Can anyone verify this? It would be good to note in the article. Electricdruid 11:30, 13 January 2006 (UTC) FM or PM? Ī lecturer informed me the other day that the FM7 actually uses Phase Modulation and not Frequency Modulation. And then there's the name! Until someone writes a great FM7 article, this isn't a bad place to redirect to. The FM7 is able to read original DX7 patches, for example. They are completely different instruments.Īccepted that they are completely different instruments, but the FM7 is basically a virtual recreation of the original DX7, with added modern bells and whistles. Obviously, that's a mistake and should be corrected. Preceding unsigned comment added by 75.111.37.124 ( talk) 06:39, 22 July 2008 (UTC) FM7 Ĭan anyone tell me why the search for FM7 gets redirected here? Shouldn't there be something here about sytrus? Its a softsynth made by Image-line, which can load dx7 patches, although it isn't an emulation, it at least deserves a mention. Preceding unsigned comment added by 187.4.2.164 ( talk) 22:15, 13 September 2010 (UTC) Sytrus There is a DSSI plugin called Hexter, which emulates the Yamaha DX7 and can be found here. I think the bass sound should be included in "Notable sounds (patches)". Preceding unsigned comment added by 86.156.68.226 ( talk) 00:13, 24 November 2016 (UTC) Bass sound Both very familiar sounds in dance music then and now. Also the Derrick May Detroit techno sound which came to be known as a 'donk' later on in rave and hard house. Solid/lately bass came with most of the dx's and could be heard everywhere in pop, particularly late 80's and euro dance into the 1990's.
Surprised there's nothing about these sounds.