User:Contribution/Chanopif Project: Difference between revisions

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Chanopif (short for Channel-Note-Pitch-Fractional pitch) is a proposed file format and specification designed to enable precise microtonal tuning for electronic and software-based musical instruments under the MIDI 2.0 standard. The format uses the .cnpf file extension and leverages the 7.25 pitch attribute (Registered Per-Note Controller #3) defined in MIDI 2.0 to achieve extremely fine pitch resolution—specifically 402,653,184 subdivisions per octave (402,653,184-EDO).

'''Chanopif''' (short for ''Channel-Note-Pitch-Fractional pitch'') is a proposed file format and specification designed to enable precise microtonal tuning for electronic and software-based musical instruments under the '''MIDI 2.0''' standard. The format uses the <code>.cnpf</code> file extension and leverages the '''7.25 pitch attribute''' (Registered Per-Note Controller #3) defined in MIDI 2.0 to achieve extremely fine pitch resolution—specifically '''402,653,184 subdivisions per octave''' ([[402653184edo|402,653,184-EDO]]).

~~Etymology~~

== Etymology ==

The name Chanopif is derived from its four core elements:

Cha-: Channel

# '''Cha-''': Channel

-no-: Note

# '''-no-''': Note

-pi-: Pitch

# '''-pi-''': Pitch

-f: Fractional pitch

# '''-f:''' Fractional pitch

These components underscore the file format’s focus on assigning precise pitch data to specific MIDI channels and note numbers.

~~Background: MIDI 2.0 Pitch 7.25~~

In MIDI 2.0, Registered Per-Note Controller #3: Pitch 7.25 provides a high-resolution method for defining pitch beyond standard 12-tone equal temperament (12-EDO). The 32-bit data field for Pitch 7.25 is split into:

== Background: MIDI 2.0 Pitch 7.25 ==

In MIDI 2.0, '''Registered Per-Note Controller #3: Pitch 7.25''' provides a high-resolution method for defining pitch beyond standard 12-tone equal temperament (12-EDO). The 32-bit data field for Pitch 7.25 is split into:

7 bits for the integer part (the “traditional” note number in semitones).

25 bits for the fractional part of a semitone.

This gives 2^7 = 128 distinct note values (as in MIDI 1.0), each further divided into 2^25 microsteps, resulting in a total of 402,653,184 equal divisions per octave (12 semitones × 2^25). This extreme resolution allows for microtonal tunings with sub-cent precision.

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-Chanopif (short for Channel-Note-Pitch-Fractional pitch) is a proposed file format and specification designed to enable precise microtonal tuning for electronic and software-based musical instruments under the MIDI 2.0 standard. The format uses the .cnpf file extension and leverages the 7.25 pitch attribute (Registered Per-Note Controller #3) defined in MIDI 2.0 to achieve extremely fine pitch resolution—specifically 402,653,184 subdivisions per octave (402,653,184-EDO).
+'''Chanopif''' (short for ''Channel-Note-Pitch-Fractional pitch'') is a proposed file format and specification designed to enable precise microtonal tuning for electronic and software-based musical instruments under the '''MIDI 2.0''' standard. The format uses the <code>.cnpf</code> file extension and leverages the '''7.25 pitch attribute''' (Registered Per-Note Controller #3) defined in MIDI 2.0 to achieve extremely fine pitch resolution—specifically '''402,653,184 subdivisions per octave''' ([[402653184edo|402,653,184-EDO]]).
-Etymology
+== Etymology ==
 The name Chanopif is derived from its four core elements:
-Cha-: Channel
+# '''Cha-''': Channel
--no-: Note
+# '''-no-''': Note
--pi-: Pitch
+# '''-pi-''': Pitch
--f: Fractional pitch
+# '''-f:''' Fractional pitch
 These components underscore the file format’s focus on assigning precise pitch data to specific MIDI channels and note numbers.
-Background: MIDI 2.0 Pitch 7.25
-In MIDI 2.0, Registered Per-Note Controller #3: Pitch 7.25 provides a high-resolution method for defining pitch beyond standard 12-tone equal temperament (12-EDO). The 32-bit data field for Pitch 7.25 is split into:
+== Background: MIDI 2.0 Pitch 7.25 ==
+In MIDI 2.0, '''Registered Per-Note Controller #3: Pitch 7.25''' provides a high-resolution method for defining pitch beyond standard 12-tone equal temperament (12-EDO). The 32-bit data field for Pitch 7.25 is split into:
 bits for the integer part (the “traditional” note number in semitones).
 bits for the fractional part of a semitone.
 This gives 2^7 = 128 distinct note values (as in MIDI 1.0), each further divided into 2^25 microsteps, resulting in a total of 402,653,184 equal divisions per octave (12 semitones × 2^25). This extreme resolution allows for microtonal tunings with sub-cent precision.