1. By spectrographic means
   "the speech spectrum was displayed spectrographically"

See also: spectrographic

• speediness
• speeding
• speeding ticket
• speedo
• speedometer
• speedskater
• speedster
• speedup
• speedway
• speedwell
• speedy
• Speer
• speiss
• Speke
• spelaeologist
• spelaeology
• speleologist
• speleology
• spell
• spell out
• spell-checker
• spellbind
• spellbinder
• spellbinding
• spellbound