shift frequency shift keying
frequency vibrational assignments
fundamental vibrational frequency
harmonic vibrarional frequency
harmonic vibrational frequency
IR group vibrational frequency
Overtone vibrational frequency
ACOUSTIC EMISSION FREQUENCY SHIFT
Analysis by frequency shift
audio frequency shift keying
audio frequency shift modulation
audio frequency shift modulator
Audio frequency-shift modulated track circuit
BCFSK Binary Code Frequency Shift Keying
benchmarking programbinary frequency shift keying
BFSK Binary Frequency Shift Keying