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[SoX-devel] [ sox-Feature Requests-2778142 ] Request for different tunings in synth
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From: SourceForge.net <no...@so...> - 2009-04-21 23:13:53
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Feature Requests item #2778142, was opened at 2009-04-21 23:03 Message generated for change (Comment added) made by richardneill You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=360706&aid=2778142&group_id=10706 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Richard Neill (richardneill) Assigned to: Nobody/Anonymous (nobody) Summary: Request for different tunings in synth Initial Comment: Using the synth effect for something like this: play -n -c1 synth sin %-7 sin %0 fade q 0.1 3 0.1 generates a chord of D + A (interval of a fifth). But is it a perfect fifth (just intonation; factor of 1.5 in frequency), or an equal tempered (chromatic) fifth (factor of 2^(7/12) i.e. 1.498 in frequency) or something else? 1. Presuming that sox currently uses equal temperament, please do actually state this in the soxeffect -> synth manpage. 2. It would be rather neat if sox supported various different tunings. See http://en.wikipedia.org/wiki/Just_intonation for some more details. ---------------------------------------------------------------------- >Comment By: Richard Neill (richardneill) Date: 2009-04-21 23:13 Message: Here is an audible demo: 5ths (first in equal-temperament, then in just-intonation) play -n -c1 synth sin 440 sin 659.255 fade q 0.1 3 0.1 ; play -n -c1 synth sin 440 sin 660 fade q 0.1 3 0.1 3rds (first in equal-temperament, then in just-intonation) play -n -c1 synth sin 440 sin 544.599 fade q 0.1 3 0.1 ; play -n -c1 synth sin 440 sin 550 fade q 0.1 3 0.1 The difference in 5ths is very hard to hear; the difference in 3rds is dramatic! ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=360706&aid=2778142&group_id=10706 |
