Amplitude modulation detection patterns of the Budgerigar

In determining the Amplitude Modulation Detection thresholds of the English Budgerigar, several stimuli were used. Amplitude modulation (AM) is the time variation of a sound signal´s amplitude². Using tone and noise carrier waveforms, MATLAB computed both AM and un-modulated stimuli; these signals were played through a speaker for the English Budgerigar. The bird discriminated between the modulated and un-modulated tones. Results show that this species of bird shows similar detection patterns as human beings. Based on the correlations between the bird and human data, the auditory system of the Budgerigar may possibly serve as a model for the human auditory system.