Left, the original English Sound/Color Chart (copyright 1977, 1998 C. Gattegno), actual size 42 cm. X 57 cm. Right, a key to the chart.
Left, a modified English Sound/Color Chart (copyright 2001, D. Cherry), actual size 42 cm. X 57 cm. Right, a key to the chart. This chart was modified specifically for native speakers of Japanese, and the layout of the vowels respects features of the Japanese language. Consonants are arranged to reflect relationships in manner and place of articulation, and voicing.
Left, a modified English Sound/Color Chart (copyright 2004, D. Cherry), actual size 42 cm. X 57 cm. Right, a key to the chart. Monophthongs (single-color rectangles above the line) are arranged to reflect horizontal and vertical tongue position. Consonants are arranged to reflect relationships in manner and place of articulation, and voicing.

A modified Sound/Color Chart (2004)

A modified Sound/Color Chart (2001)

Original Sound/Color Chart

A modified Sound/Color Chart (2009)

2009Chart
2009key
Left, a modified English Sound/Color Chart (copyright 2009, D. Cherry), actual size 42 cm. X 57 cm. Right, a key to the chart. Monophthongs (single-color rectangles above the line) are arranged to reflect horizontal and vertical tongue position. Consonants are arranged to reflect relationships in manner and place of articulation, and voicing.