ref: 242b2e05cf30bc47a53167baf6bd3134d1f47d18
dir: /audio/sfx/purchase_1.asm/
SFX_Purchase_1_Ch5: duty_cycle 2 square_note 4, 14, 1, 1792 square_note 8, 15, 2, 2016 sound_ret SFX_Purchase_1_Ch6: duty_cycle 2 square_note 1, 0, 8, 0 square_note 4, 9, 1, 1729 square_note 8, 10, 2, 1953 sound_ret