Somehow I was unable to save the file, so here is a substitute https://drive.google.com/file/d/1rsuT0AaQXD_cGVXSRHxi2pdLTecQDQ_M/view?usp=sharing (a file that exported)

Here is a light switch using monostable 555 timer.

lab13

1.)Nick Royall has a really complicated sequencer, keyboard and drum. And it is even able to switch sound source. It can be played as a keyboard and used as 8 step sequencer. It can even change the light. 

Paul Odenwaldt’s GrainCube is cool. It allows users to use gamecube controller to sample and create through The GrainCube he designed, which can do delay, pitch modulation bounds modulation. 

Dominic Yuan’s project concept is simple, but it looks good. I would like to have a lamp like that in some occasion, if the light can react to more specific factor in music, say when something is under side chain, that’s gonna be so cool when you play some EDM.

2.)https://www.youtube.com/watch?v=-p_8u_0GNZE

Soft drink cans are used keyboard, triggering samples. So many things can be used to play music now, much like midi keyboard.

Here is a foam gun that can be controlled remotely to shoot things. Remind me of a video game where such device is super helpful.

3.) Analog Analog Analog

4.) I have taken intro to programing. And just some really basic programs that can calculate, give pre-written responses. 

Ground Control audio

There isn’t much description about the company, except it develop one amp at a time. And the art on the pedal is really cool.

Like: It is really cool. Like Amaterasu and Serpent, the harmonics sounds cool. 

Dislike: god its expensive. A distortion pedal cost $170. And the lower end of distortion is too loud and sounds weird. Though they have a mid focused amplify option, but still not what I am looking for.

Fredric Effects

This is a brand consisted of guitarists, and they try to provide handmade effects pedal  with simpler design, and cheaper price.

Like: ‘The accomplished badger’:the pedal can go from clean boost to great distortion. The range of it is good. And is cheap.

Dislike: most of them looks uncool.

Hudson Electronics UK:

This brand recreate vintage style pedals, and is good at creating heavy overdrive.

Like: the grumpy heavy low-end is very on point, really classic, it rocks.

Dislike: sounds old.

1b) bigger companies like boss have diverse effects, delay, compression, reverb, and have focus on acoustic guitar. While smaller companies focus on specific effects, like distortions and compression. And I feel like bigger companies also have cheaper price.

1c)https://www.jimdunlop.com/mxr-smart-gate-noise-gate/ this is a noise gate, it helps reduce noises, like de-esser for vocals. Guitarists have perfectionists too, I am enlightened. 

2)SPST (single pole, single throw), the switch is either connected or disconnected.\

3.) latch when pressed just hold the status in place, and momentary only triggers when pressed. latch is used in stomp pedal more often, it is more convenient to just left the effect open sometimes.

Ground Control audio

There isn’t much description about the company, except it develop one amp at a time. And the art on the pedal is really cool.

Like: It is really cool. Like Amaterasu and Serpent, the harmonics sounds cool. 

Dislike: god its expensive. A distortion pedal cost $170. And the lower end of distortion is too loud and sounds weird. Though they have a mid focused amplify option, but still not what I am looking for.

Fredric Effects

This is a brand consisted of guitarists, and they try to provide handmade effects pedal  with simpler design, and cheaper price.

Like: ‘The accomplished badger’:the pedal can go from clean boost to great distortion. The range of it is good. And is cheap.

Dislike: look uncool

Dislike: most of them looks uncool.

Hudson Electronics UK:

This brand recreate vintage style pedals, and is good at creating heavy overdrive.

Like: the grumpy heavy low-end is very on point, really classic, it rocks.

Dislike: sounds old.

1b) bigger companies like boss have diverse effects, delay, compression, reverb, and have focus on acoustic guitar. While smaller companies focus on specific effects, like distortions and compression. And I feel like bigger companies also have cheaper price.

1c)https://www.jimdunlop.com/mxr-smart-gate-noise-gate/ this is a noise gate, it helps reduce noises, like de-esser for vocals. Guitarists have perfectionists too, I am enlightened. 

2)SPST (single pole, single throw), the switch is either connected or disconnected.

3.) latch when pressed just hold the status in place, and momentary only triggers when pressed. latch is used in stomp pedal more often, it is more convenient to just left the effect open sometimes.

https://www.multisim.com/content/utLc4hUzHMa33Xk6D2EEWn/week-10-tiankai/open/

1)b

2)b

3)the two will not sound the same, because the two diodes will interfere with the output if connected, because the two diodes act as resistors, and make the volume way smaller than that.

4)clean signal, distorted signal

5)half clean signal half distorted

1) With the oscillator we’re studying the comparator outputs a _______(square) wave and the integrator outputs a _______ (square/triangle )wave.

2) With an integrator, if Vin is positive the output voltage ramps ______down (up/down). If Vin is negative the output voltage ramps _______up (up/down).

3) With a comparator, if the op amp’s + input is connected to a greater voltage that that connected to it’s – input, the op amp’s output will be about _____ negative(positive/negative) 9v DC.  If the op amp’s + input is connected to a lower voltage that that connected to it’s – input, the op amp’s output will be about _____ positive(positive/negative) 9v DC.

4) There’s a formula for how fast the integrator ramps up or down:

change in volts per second at Vout = -Vin / RC

So the bigger the resistance R you use the __________slower (faster/slower) the ramp gets, and the bigger the capacitor gets the __________ faster(faster/slower) the ramp gets.

5) The circuit at the end of this video is a monophonic synthesizer – it can only output one tone at a time. What do you think would have to do to make a polyphonic synthesizer that could play 2 notes at the same time? 3 notes? 4 notes? 100 notes?

have multiple output, I think it will have to be multiple units of the oscillators each assigned to a potentiometer that determines its frequency.

1. I think I could build a amplifier, some kind of gain that adds harmonic distortion
2. a multi-band filter would take more work but fine?
3. compressor. It’s a really helpful mixing tool, give my track fire. I would love to pay my respect by building one

DC Blockers:

Resistors are inserted into the circuit to prevent large current, protecting the circuit.

Capacitors prevents the flowing of DC, and allows AC. This protect the signal output

Non-inverting amplifiers:

to have a gain of two, meaning 1+r2/r1=2, r2 is equal to r1.

when gain is one it means r2 is 0. when gain is 2 r2 is equal to 1.

The amplified wave is at different position than the original, might because it is negative.

power turns on

-volt/div 0.5 both it is the scale of the display. 0.5 volt/div means one square represent 0.5 volt

-position in the middle: it puts the display in the middle

-mode dual it means showing both channel 1 and channel 2’s status

-horizontal 0.5 adjust wavelengths narrowness i think ‘time’ knob do the same thing

-VAR switch to DC what it does? good question

-focus and intensity on the middle focus adjust thickness of the lines, focus makes lines look sharper.

X and Y axis:

x is very much the time /div, meaning each div represents a certain time length. And Y is Volt/div meaning each div represent an amount of volt.

percentage of minimum and maximum input :0 and 100%? if no resistance is encountered.