Tuning, regulation and voicing: what each does.

Overview

Three kinds of work on three parts of the instrument

Yamaha’s maintenance guide describes tuning, regulation and voicing as distinct procedures. The Piano Technicians Guild reinforces the same distinctions. Here is what each addresses.

Service	What it addresses	Result
Tuning	The pitch of each string	The piano plays at the correct pitch
Regulation	The mechanical action	Even touch and consistent key response
Voicing	The hammer felt and tone	Balanced, even tone across the keyboard

A piano can need one, two or all three. A technician assesses the condition and decides what work and sequence are appropriate; the terms alone do not specify a package.

02

Tuning: pitch

Tuning adjusts the tension of each string so the piano plays at the correct pitch. The technician turns tuning pins to adjust string tension across the keyboard.

Pitch symptoms to describe:

• Notes sound sour or clashing, especially in chords.
• Unisons waver where a note has multiple strings that should sound together.
• The piano sounds noticeably different from how it used to.

Frequency: the Yamaha Hub recommends tuning every six to twelve months depending on use, age and environment. New pianos should be tuned twice in their first year. If the pitch has dropped significantly, a pitch raise may be needed before fine tuning; this is a separate, larger adjustment. See the tuning preparation guide for what to arrange before the visit.

03

Regulation: touch

Regulation adjusts the mechanical action so every key behaves consistently. Yamaha describes it as making minute adjustments to the keyboard and action, levelling the keys and adjusting the touch.

Touch symptoms to describe:

• Keys feel uneven: some are heavier or lighter than their neighbours.
• A key does not return to its resting position promptly after being pressed.
• Repeated notes do not speak cleanly; the hammer does not reset fast enough.
• The dynamic range feels limited: you cannot play as softly or as loudly as the instrument should allow.

The PTG notes that regulation compensates for the effects of wear, humidity changes and the compacting of cloth and felt. The Yamaha Hub suggests regulation roughly every three to four years, but the interval depends on use and conditions.

A piano can be perfectly in tune and still need regulation. Music Companion’s tuning page explains that tuning and regulation are different jobs.

04

Voicing: tone

Voicing adjusts the tone of the piano by modifying the hammer felt. Yamaha describes it as balancing volume and tone by adjusting the hardness of the felt, typically using a tool called a picker to prick the felt with needles.

Tone symptoms to describe:

• The tone varies noticeably from note to note across the keyboard.
• The piano sounds too bright or too mellow overall.
• You cannot achieve a range of tone from soft to bright regardless of how you play.

The PTG notes that voicing changes tone without affecting pitch. Pitch, action and tone can interact, so ask the technician what should be assessed before choosing the work.

Voicing is less frequent than tuning and is not always needed. Describe what you are hearing to your technician and let them assess whether voicing is appropriate.

05

What to ask a technician

• Based on what I am describing, does this sound like a tuning, regulation or voicing issue?
• What will the session include, and what is charged separately?
• If more than one type of work is needed, in what order should it be done?
• Will you provide a written note of what was done and anything that needs follow-up?

Music Companion’s tuning page lists tuning, regulation and pitch raise as published services. If you are not sure what your piano needs, describe the symptoms when you get in touch and the technician can advise. For ongoing care between visits, see the humidity and care guide.