Unexplainable

What's good sound?

January 28, 2026

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  • The perceived 'vibe' of a musical note, such as A, changes significantly based on minute frequency variations (e.g., A440 vs. A443), influencing whether the sound feels 'anxious' or 'relaxed.' 
  • Violin making is an astoundingly complex process where tiny adjustments, like moving the sound post by a tenth of a millimeter, drastically alter the instrument's tone, illustrating the difficulty in isolating variables for scientific study. 
  • Violin makers aim to balance opposing sonic qualities—such as brightness/power versus warmth/intimacy—recognizing that the instrument's complexity, rich with overtones similar to the human voice, prevents achieving a single, perfect sound. 

Segments

Listener Email on Tuning
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(00:01:45)
  • Key Takeaway: Violin makers must account for orchestras tuning to sharper A frequencies (e.g., A444 or A445) and soloists tuning slightly sharper for projection, which adds stress to the instrument.
  • Summary: Violinist Michael Doran noted that some symphonies tune to a sharper A, and soloists sometimes tune one hertz sharper for projection. He recounted making a cello for a BSO principal that needed to sound good at A444 or A445, requiring higher tension strings. Doran also experiences tinnitus where the tone in his right ear is A440 and the left is A442.
Fact-Checking Orchestra Tuning
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(00:03:23)
  • Key Takeaway: The standard tuning for the Boston Symphony Orchestra is A441, contradicting the initial claim of A444, though the Berlin Symphony is reported to tune as high as A442.
  • Summary: The host fact-checked the email, learning the Boston Symphony tunes to A441, not A444, and the principal soloist did not seek an extra edge by tuning higher. A441 is considered standard, while A444 is noted as ‘super pushing it’ in terms of sharpness.
Comparing A440 vs. A443 Vibes
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(00:04:07)
  • Key Takeaway: A violin tuned to A443 sounds more ‘direct and focused and kind of like edgy,’ while A440 sounds ‘size’ and allows the listener to ‘sink into’ the sound.
  • Summary: The host compared two local violinists’ instruments: one tuned to A440 (a purist) and one to A443 (a ‘happy A’ guy). The A443 violin sounded edgy and almost uncomfortable, whereas the A440 felt more relaxed and spread out.
Energy and Overtones in Pitch
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(00:07:04)
  • Key Takeaway: Higher frequencies (sharper notes) correspond to literally sharper energy because the sound waves oscillate more frequently, while tone color is determined by the overtones vibrating around the primary frequency.
  • Summary: A frequency of 440 Hz means the sound wave oscillates 440 times per second, resulting in smaller waves reaching the ear, which translates to sharper energy. Violins produce complex sounds involving overtones, which contribute to tone colors like ‘sweet’ or ‘piercing,’ rather than just a pure sine wave.
Violin Complexity and Craft
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(00:10:09)
  • Key Takeaway: Violins are among the most complex vibrating machines humans have made, and makers strive to balance projection/power with warmth/intimacy, a goal often described as an unreachable mountaintop.
  • Summary: The complexity of violin sound is compared to using pure vanillin versus a complex, fermented vanilla pod, involving vibrations with the room, air, and bow. Makers aim for instruments that are both sweet/rich and loud enough for the back of the hall, a difficult balance to achieve.
Unanswered Questions in Making
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(00:11:41)
  • Key Takeaway: The primary challenge in violin making is the overwhelming number of variables, making controlled scientific experimentation nearly impossible since every piece of wood is unique.
  • Summary: The maker stated that his job is filled with unanswered questions because changing one variable in construction affects five others, and no two pieces of wood are identical. He navigates this by guessing how choices will push the sound toward either a brighter or warmer direction.
The Importance of the Sound Post
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(00:13:08)
  • Key Takeaway: The sound post, called the ‘soul of the instrument’ in Italian, is a critical, unglued dowel whose exact placement (to the tenth of a millimeter) profoundly influences which strings are emphasized.
  • Summary: The placement of the sound post is crucial for the instrument’s sound, requiring precise fitting without glue. Adjusting its position, even by a tenth of a millimeter, can emphasize different strings, making the process akin to playing the game Operation.
Recognizing Doran Instruments
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(00:14:42)
  • Key Takeaway: Despite aiming for instruments to be siblings rather than twins, the maker has recognized his own cellos by sound alone during a large, blinded competition.
  • Summary: The maker believes his instruments share a common sound profile, though they are not identical. At a competition with 500 instruments, he was able to identify his cello multiple times when it was being played by others.
Studio Tour and Tools
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(00:16:37)
  • Key Takeaway: The violin maker’s favorite and most iconic tool is the finger plane, which he custom-makes and adjusts so its slightly rounded sole carves the exact concave shape required for precise thicknessing.
  • Summary: The studio smells distinctly of wood, varnish, and machines, and the maker notes that his entire lifetime output of instruments could potentially be made from a single large tree. He favors his set of about 20 finger planes, which are personal tools shaped to fit his hands and carve the specific contours he desires into the instrument’s body.