volovicg Posted February 26 Share Posted February 26 (edited) If a keyboard or midi instruments has a specification which indicates 128 note polyphony. What is the best way to test and verify this? Anyone have any ideas. Using Logic I was going to send all 128 notes as long note and then turn each one off one at a time and see if I can the see each note turn off either in spectral from or in Melodyne. Does anyone have a better idea on a way to do this? bit of brain fog this morning. Edited February 26 by volovicg Quote Link to comment Share on other sites More sharing options...
des99 Posted February 26 Share Posted February 26 (edited) 46 minutes ago, volovicg said: If a keyboard or midi instruments has a specification which indicates 128 note polyphony. What is the best way to test and verify this? Why do you need to test it, out of interest? Do you suspect the manufacturer is lying? Or the gear is broken or something? Remember that 128-polyphony usually refers to 128 voices, but a preset you call up might use multiple voices per note - eg, it's quite common for many modules to have 2, or even 4 voices per note (eg typical Roland romplers), meaning using one of those patches gives you 32-notes of polyphony. So I would choose a patch with a good amount of oscillators per voice, and keep playing notes in an extended sustaining chord until notes get stolen, then you know how many voices are sounding. Some modules/synths give an indication of how many voices are sounding, too. Edited February 26 by des99 Quote Link to comment Share on other sites More sharing options...
volovicg Posted February 26 Author Share Posted February 26 Just curious how did you get 32 from 4 voices per note - are you assuming using 8 of of your 10 fingers? Also - How would I determine or find out if Roland is using multi voices per sound. Internally I believe it is a Roland Fantom architecture. Quote Link to comment Share on other sites More sharing options...
Solution des99 Posted February 26 Solution Share Posted February 26 (edited) 48 minutes ago, volovicg said: Just curious how did you get 32 from 4 voices per note Because if one note is playing 4 voices, and you have 128 voices available, then you can play 32 notes (32 x 4 voices = 128). 48 minutes ago, volovicg said: are you assuming using 8 of of your 10 fingers? ? I don't follow... 48 minutes ago, volovicg said: How would I determine or find out if Roland is using multi voices per sound. Internally I believe it is a Roland Fantom architecture. Hit the patch edit button and take a look. On my XV-5080 (which is about 90% of a Fantom, and also has 128-voices of polyphony), the front panel shows how many of the four partials are active, so at a glance you can see whether a patch is using one, two, three or four partials. (The Roland engines of this era all have four-partial structures, but you don't have to use all partials in every patch.) Each partial is playing a sample, and will be using one voice - so a four-partial preset requires 4 voices for every note you play - hence you'll get 32-note polyphony on that patch, whereas you'd get 128-note polyphony on a patch that uses just one partial. Edited February 26 by des99 Quote Link to comment Share on other sites More sharing options...
volovicg Posted February 27 Author Share Posted February 27 You just hit on it - I did not know how most sounds from this era utilize four partials. And that explains why I seem to run out of sounds at the 30 or so mark ( event thought I thought 128 was the limit). Is there a document from Roland ( that you may be aware of ) that lists the information - sound/voice list with how many partials comprise it. 1 Quote Link to comment Share on other sites More sharing options...
des99 Posted February 27 Share Posted February 27 (edited) 26 minutes ago, volovicg said: Is there a document from Roland ( that you may be aware of ) that lists the information - sound/voice list with how many partials comprise it. No - my XV-5080 has thousands of presets, and that's without any expansion cards. Listing out parameters for each preset would be impractical. You haven't said what module you are using, but it may well show how many partials are being used on it's display, or it doesn't have illuminated buttons etc. The plugin version is somewhat similar to the hardware. You can see the four buttons marked 1 - 2 - 3 - 4, with buttons 1 and 2 illuminated, showing that this patch uses two partials. (This is also echoed on the display.) And hitting the button calls up that particular partial for editing. So on the hardware and plugins, it's quite easy to see at a glance how many partials a preset uses. Edited February 27 by des99 Quote Link to comment Share on other sites More sharing options...
volovicg Posted February 28 Author Share Posted February 28 Thank You! 1 Quote Link to comment Share on other sites More sharing options...
des99 Posted February 28 Share Posted February 28 You're welcome! Quote Link to comment Share on other sites More sharing options...
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