Fix unquantized solo voice output

Without this patch, 1V/oct input into an unquantized solo voice does not map correctly to output frequency. Instead of mapping whole CV values (e.g. 2.0 V) to C note, it is mapped to A. This patch fixes it. Signed-off-by: Petr Horacek <[email protected]>
zlosynth · Nov 25, 2024 · be55def · be55def
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -6,10 +6,11 @@ backwards compatibility.
 
 ## Unreleased
 
+* Introduce basic detune to the first detune section.
 * Tune the output to match 440 Hz at A.
+* Fix 1V/oct alignment of unquantized solo voice output.
 * Pure Data externals were moved to a [dedicated project](https://github.com/zlosynth/automaton).
 * Offer alternative firmware with white key quantization disabled.
-* Introduce basic detune to the first detune section.
 
 ## 2.2.1
 

diff --git a/lib/src/instrument.rs b/lib/src/instrument.rs
@@ -579,7 +579,7 @@ impl<'a> Instrument<'a> {
                         note.to_freq_f32()
                     }
                 } else {
-                    Note::AMinus1.to_freq_f32() * 2.0.powf(voct)
+                    Note::C0.to_freq_f32() * 2.0.powf(voct)
                 };
                 self.degrees[last].set_frequency(frequency);