ToneWood / Global material atlas

Materials Database & Acoustics Lab

Explore public acoustic distributions and measured material records. Sign in to manage your own inventory, measurements and retests in the same workspace.

Instrument usePart

Dossier publication and identity-hidden chart contributions are separate permissions. This list includes published dossiers, even when their 3D measurements are incomplete.

📜 Wood Acoustic Reference Standards

Wood Sample

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#TW-20261101-D9076E13

🏆Exceptional

c (Speed)

5779 m/s

ρ (Density)

367 kg/m³

E (Elasticity)

12.3 GPa

Radiation R (c/ρ)

15.73 m⁴/kg·s

Impedance Z (ρ·c)

2.12 MRayl

Acoustic Score

161.3

better than 100%violin · Soundboard

Score distribution

n = 32

Reference materialsNormal fitThis material

X: Acoustic Score; Y: material count. Bars are observed aggregates; the fitted curve describes the distribution, not instrument tone.

The reference pool includes valid, opted-in statistical contributions, not only published dossiers; it excludes this material. Percentiles count observed scores strictly below it, not the fitted curve.

Acoustic profile

Five percentiles

c · Sound speed: better than 97%
R · Radiation ratio: better than 97%
Q · Decay Q: better than 91%
ACE · Acoustic index: better than 100%
E · Dynamic modulus: better than 92%

Compared within the same use and part; missing axes stay empty. Radar area is not instrument quality.

🔬 ToneWood Measurement📅 Nov 1, 2026

Wood Sample

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#TW-20261101-9BFDA0E9

🏆Exceptional

c (Speed)

5565 m/s

ρ (Density)

358 kg/m³

E (Elasticity)

11.1 GPa

Radiation R (c/ρ)

15.53 m⁴/kg·s

Impedance Z (ρ·c)

1.99 MRayl

Acoustic Score

130.8

better than 91%violin · Soundboard

Score distribution

n = 32

Reference materialsNormal fitThis material

X: Acoustic Score; Y: material count. Bars are observed aggregates; the fitted curve describes the distribution, not instrument tone.

Acoustic profile

Five percentiles

c · Sound speed: better than 95%
R · Radiation ratio: better than 97%
Q · Decay Q: better than 9%
ACE · Acoustic index: better than 91%
E · Dynamic modulus: better than 74%

Compared within the same use and part; missing axes stay empty. Radar area is not instrument quality.

🔬 ToneWood Measurement📅 Nov 1, 2026

Wood Sample

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#TW-20260928-4A0E575AD67B434B83125EDB8BECFE13

⭐Excellent

c (Speed)

5019 m/s

ρ (Density)

354 kg/m³

E (Elasticity)

8.9 GPa

Radiation R (c/ρ)

14.16 m⁴/kg·s

Impedance Z (ρ·c)

1.78 MRayl

Acoustic Score

130.4

better than 87%violin · Soundboard

Score distribution

n = 31

Reference materialsNormal fitThis material

X: Acoustic Score; Y: material count. Bars are observed aggregates; the fitted curve describes the distribution, not instrument tone.

Acoustic profile

Five percentiles

c · Sound speed: better than 38%
R · Radiation ratio: better than 95%
Q · Decay Q: better than 77%
ACE · Acoustic index: better than 87%
E · Dynamic modulus: better than 22%

Compared within the same use and part; missing axes stay empty. Radar area is not instrument quality.

🔬 ToneWood Measurement📅 Sep 28, 2026

Wood Sample

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#TW-20260928-73178F4B23AB4B7F8C187EFD5D6F5598

⭐Excellent

c (Speed)

5111 m/s

ρ (Density)

364 kg/m³

E (Elasticity)

9.5 GPa

Radiation R (c/ρ)

14.03 m⁴/kg·s

Impedance Z (ρ·c)

1.86 MRayl

Acoustic Score

125.8

better than 81%violin · Soundboard

Score distribution

n = 31

Reference materialsNormal fitThis material

X: Acoustic Score; Y: material count. Bars are observed aggregates; the fitted curve describes the distribution, not instrument tone.

Acoustic profile

Five percentiles

c · Sound speed: better than 51%
R · Radiation ratio: better than 89%
Q · Decay Q: better than 48%
ACE · Acoustic index: better than 81%
E · Dynamic modulus: better than 32%

Compared within the same use and part; missing axes stay empty. Radar area is not instrument quality.

🔬 ToneWood Measurement📅 Sep 28, 2026

Wood Sample

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#TW-20260928-98C523E9C0BF471386CC3D3352B7E400

⭐Excellent

c (Speed)

5407 m/s

ρ (Density)

412 kg/m³

E (Elasticity)

12.0 GPa

Radiation R (c/ρ)

13.13 m⁴/kg·s

Impedance Z (ρ·c)

2.23 MRayl

Acoustic Score

123.8

better than 77%violin · Soundboard

Score distribution

n = 31

Reference materialsNormal fitThis material

X: Acoustic Score; Y: material count. Bars are observed aggregates; the fitted curve describes the distribution, not instrument tone.

Acoustic profile

Five percentiles

c · Sound speed: better than 92%
R · Radiation ratio: better than 54%
Q · Decay Q: better than 87%
ACE · Acoustic index: better than 77%
E · Dynamic modulus: better than 92%

Compared within the same use and part; missing axes stay empty. Radar area is not instrument quality.

🔬 ToneWood Measurement📅 Sep 28, 2026

Wood Sample

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#TW-20260928-FE1823ACED4342678F1BBCD2BF98CBC2

🏆Exceptional

c (Speed)

5580 m/s

ρ (Density)

418 kg/m³

E (Elasticity)

13.0 GPa

Radiation R (c/ρ)

13.36 m⁴/kg·s

Impedance Z (ρ·c)

2.33 MRayl

Acoustic Score

121.6

better than 65%violin · Soundboard

Score distribution

n = 31

Reference materialsNormal fitThis material

X: Acoustic Score; Y: material count. Bars are observed aggregates; the fitted curve describes the distribution, not instrument tone.

Acoustic profile

Five percentiles

c · Sound speed: better than 97%
R · Radiation ratio: better than 65%
Q · Decay Q: better than 65%
ACE · Acoustic index: better than 65%
E · Dynamic modulus: better than 97%

Compared within the same use and part; missing axes stay empty. Radar area is not instrument quality.

🔬 ToneWood Measurement📅 Sep 28, 2026

Wood Sample

top

#TW-20260928-03284682

⭐Excellent

c (Speed)

5174 m/s

ρ (Density)

361 kg/m³

E (Elasticity)

9.7 GPa

Radiation R (c/ρ)

14.31 m⁴/kg·s

Impedance Z (ρ·c)

1.87 MRayl

Acoustic Score

130.1

better than 84%violin · Soundboard

Score distribution

n = 31

Reference materialsNormal fitThis material

X: Acoustic Score; Y: material count. Bars are observed aggregates; the fitted curve describes the distribution, not instrument tone.

Acoustic profile

Five percentiles

c · Sound speed: better than 65%
R · Radiation ratio: better than 97%
Q · Decay Q: better than 61%
ACE · Acoustic index: better than 84%
E · Dynamic modulus: better than 38%

Compared within the same use and part; missing axes stay empty. Radar area is not instrument quality.

🔬 ToneWood Measurement📅 Sep 27, 2026