Q: what is the Nyquist frequency? 

Answer: 

half the sample rate 

Q: if you want to go up one octave, you ______ the frequency. 

Answer: double 

Q: if you want to go down one octave, you ______ the frequency. 

Answer: halve 

Q: what does a high pass filter do? 

Answer: 

allows high frequencies through 

Q: what does a low pass filter do? 

Answer: 

allows low frequencies through 

Q: what does a band pass filter do? 

Answer: 

allows a band of frequencies through (mid) 

Q: what does a band reject filter do? 

Answer: 

holds back/attenuates a band of frequencies (allows high and low frequencies) 

Q: what does a Fourier transform do? 

Answer: 

creates a spectrum from the time domain waveform (deconstructs the waveform