We find piano tuning fascinating.  Maybe you will, too!

Terms and Definitions (used in tuning)

Amplitude: A physical characteristic of sound. The strength of vibration which produces loudness.

Beat rate:  The “throbbing” heard when two notes of an interval disagree slightly; the degree of “out of tuneness.”

Bloom: The beginning moment of the tonal envelope; where “chiff “ occurs. The expansion of transient sounds through the initial oscillation to the tonal corpus which becomes the (consistent) identifiable tone of generation.

Cents: The 100 segments between two adjacent semitones. The term used to describe the small distances in interval tuning as “cents wide” and “cents narrow.”

Comma: The out of tuneness between the leading note and tonic in the mean-tone tempered scale; where the seventh and flatted seventh (augmented sixth) scale degrees produce “wolf tones.”

Duration: The length of time of vibration; length of sound from beginning to end.

Equal Temper: The tuning arrangement of the chromatic scale to the 12th root of 2.

Frequency: A physical characteristic of sound; produces the characteristic known as “pitch.”

Fundamental: The tone we hear most clearly in a note. The first harmonic in the tone complex.

Harmonic: A sine wave being generated in the tonal complex of a single note. An “over-tone.”
The dominant wave pattern produced by “over-blowing” a winded tone generator.
The agreed relationship of two or more notes played together

Inharmonicity: The disagreement between two or more musical tones. The incompatibility of two or more modes of ocillation in a unison tone generator or between tones of an interval, as in “unison inharmonicity” and “interval inharmonicity.”

Initial Oscillation: Very first flip of the wind sheet in the generation of tone in an organ pipe; identified as outside or inside

Interval: The distance between two notes of the musical scale; usually stated as a number and noted major, minor, augmented, etc.

Mean-tone Temper: (Tuning) arrangement of the chromatic scale based on successive perfect fifth intervals; produces “sheep” and “wolf” intervals; usually varied to achieve colour intervals in specific key scales; e.g., quarter comma mean-tone.

Mode of Oscillation: The sine wave pattern of any single harmonic being generated.

Music: The normal sounds we call “tones” moving through time in timbre, dynamics, form and texture.

Overtone structure: A physical characteristic of sound; the harmonic profile of a single sound complex; difference between two notes of the same pitch from two different musical instruments.

Pitch: Frequency; usually stated in cycles per second (c.p.s.). The relative tension of a vibrating column to produce a tunable (identifiable) note or tone.

Scale: Arrangement of successive musical notes within an octave; chromatic, diatonic, major, minor, etc.

Semi-tone: The distance between two chromatic notes in a musical scale; divided into 100 smaller segments called “cents.”

Sheep: The purity of tuneness of certain notes in relation to the tonic in the mean-tone tempered scale; purity of tuneness of certain intervals in the mean-tone tempered scale, i.e., sheep, lamb.

Style: The synthesis of basic musical elements, i.e., tempo, tone, colour, timbre, texture, volume, form, dynamics and agogics.

Timbre: A physical characteristic of sound, overtone structure and profile of a tone; includes a number of relative pitches in various intensities.

Tonal Envelope: The complete tonal pattern of a single note from beginning to end; includes bloom, tone of generation, and Wilt (fall off).

Tone of Generation: The consistent and identifiable portion of the tonal envelope following the bloom. The expected tone. The tunable note.

Touch: The individual “feel” of a keyboard (musical) instrument as its keys are depressed during the playing motion. It involves such qualities as “after-touch” and“pluck.”

Well Temper: The curved (tuning) arrangement of the chromatic scale toward purer third and sixth intervals in selected (key) scales; usually involves a progressive adjustment of interval “beats” within the circle of fifths; usually starts at 2’ C (middle C), but can start on any note of the chromatic scale and be adjusted according to the desired key.

White Noise: The transient random sound bites mixed into the tonal envelope; gurgling hissing undercurrents in the tone being generated.

‘Wind Link: The final (common) wind source for two or more organ pipes; usually two or more pipes on the same wind channel. The frequency sympathy between two organ pipes carried on in a common wind supply.

Wolf: The out of tuneness of certain notes in relation to the tonic in the mean-tone tempered scale; successive out of tuneness of notes backward from the tonic in the mean-tone tempered scale as pertains to certain intervals, i.e., wolf, wolfie.