Due Tuesday, 10/14, by 3:30pm.
Show your work!
Problem Set:
1. A recorded sinusoid has a sample rate of 48 kHz and a frequency of 660 Hz. What is its period in samples?
2. You take a recorded sinusoid of your favorite frequency, invert it, and multiply it by 2.
a) What is the change in gain?
b) How about the change in level (dB)?
3. What frequency is 1/2 octave above 330 Hz.?
4. A Nintendo Gameboy has 4 Digital-to-Analog Converter (DAC) channels, each capable of producing sound with a word length of 4 bits. What the Signal-to-Noise Ratio (SNR) for one of these channels?
5. If you generate a sinusoid of frequency 90 Hz, but only sample your sinusoid at a rate of 100 Hz, what frequency will you hear when you play it?Home Lab:
The homelab can be found here, after the numbered questions, under the heading "Project". Answer the questions related to this lab and include them with your responses to the Problem Set.
Have fun!
For my output object in Pd, there just seems to be the gain toggle, but not the on/off switch...
ReplyDeleteare you running pd-extended or pd-vanilla?
ReplyDeleteyou can do the assignment with the "dac~" object as well. simply connect the outgoing cables from the sinusoid into both inlets at the top of the dac~ object. you'll have to turn off dsp (or cut the chords) to get it to stop.
hope that helps!