ECMC PVC example file chordmapper3
ECMC PVC example "chordmapper3" illustrates that "chordmapper" can be used for many (but not all) of the same types of detuning operations as the PVC program "inharmonator." This example is very similar to ECMC PVC example "inharm1." Like "inharm1," it mixes, in succession, 4 source soundfiles, which were created by ECMC example script files chordmapper3-1, chordmapper3-2, chordmapper3-3 and chordmapper3-4. In chordmapper3-1, which created the first note, source soundfile /sflib/string/vln.g3 is resynthesized with no alterations, to provide a reference for the following 3 examples. Not much of interest here, except by way of comparison. The resulting tone is practically identical to that produced by ECMC PVC example "inharm1-2." In chordmapper3-2, the second tone, only harmonic one (the fundamental) is altered. This harmonic is shifted down a major seventh in frequency and its amplitude is boosted by 12 dB. All other harmonics are attenuated by 9 dB. Compare with ECMC example "inharm2-3." In example "chordmapper3-3" the frequencies of partials 1 through 5 are raised by increasing amounts (partial 1 is raised a minor ninth, partial2 a major ninth, partial 5 an eleventh. The gain of these 5 target partials by about 3 dB, while the gain of all other partials is attenuated slightly. Compare with example "inharm1-3" -- there is almost no difference. In the final tone, created by example file "chordmapper3-4," the frequencies of odd numbered harmonics 1, 3, 5, 7, 9 and 11 are altered by ratios alternating between a major second lower and a major second higher than the original frequencies, while the even numbered harmonics, and those above harmonic 11, are unaltered. In contrast to the earlier three tones, this examples differs audibly from its twin, "inharm1-4," since there is no parameter in "chordmapper" that corresponds to the INHARMONATOR_fundamental_frequency parameter in inharmonator. For details on how each of the four tones within "chordmapper3" was realized see ECMC PVC example file "chordmapper3-1" through "chordmapper3-4."