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Questions tagged [music]

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48
votes
5answers
6k views

Why does music synthesizer built from chain of astable multivibrator circuits get “out-of-tune” after a few hours?

I built a prototype keyboard/sound synthesizer using a chain of 13 astable multivibrator circuits whose outputs are connected to an audio amplifier chip (LM386) and speaker, all powered off a 9V DC ...
0
votes
2answers
82 views

Swapping two 500kohm pots with one MCP42010 10k ohm digital pot

What additional elements do I need in my circuit to compensate for changing a pair of manual 500k ohm pots to a pair of digital 10 ohms? I'm a beginner implementing an Atari Punk Console on Raspberry ...
0
votes
3answers
72 views

Portable electronic musical instrument: energy from pressing keys, no batteries: feasible? [closed]

on one hand electronic musical instruments are very nice (lot of features: change tonality, change timbre, small number of mechanically breakable parts ), on the other hand they need external power ...
4
votes
2answers
36 views

DIY guitar effect - delay

I'm trying to build a guitar delay effect based on this schematic: (https://i2.wp.com/cdn.makezine.com/uploads/2009/09/echobenderrev02.jpg) I designed and oredered a pcb : https://easyeda.com/...
0
votes
2answers
144 views

Is this speaker crossover design correct?

This is the schematic for 2-way crossover, the speakers I want to use are: Woofer: https://thomann.de/pl/harley_benton_15tb065_b4.htm?o=2&search=1537173360 Tweeter: https://thomann.de/pl/...
0
votes
1answer
66 views

Component that plays single .mid music file? [closed]

Is there a component, (that is not Raspberry Pi or other mini computer it would be an overkill), that I can use to play a MIDI music file on loop? Even by uploading it on it or program it to the tune. ...
0
votes
2answers
75 views

A sensor which can measure the vibration of a material

I am planning on making a musical instrument where I require the conversion of vibration of a material to voltage. The idea is to make a percussion instrument where I hit a plate made of a certain ...
0
votes
2answers
80 views

How do I create a subtractive or dffferential two channel audio mixer?

I have a desktop mixer made by Behringer (Xenyx X2222USB although I am not using its USB capabilities) which has a line level output that feeds 2 channels of a Behringer USB audio interface (U-Phoria ...
0
votes
0answers
60 views

How do I produce a continuous sound on my Basys3 board?

I am using the software Vivado 2016.2 and Basys3 board to create a basic musical instrument. I have produced the notes do (SW1), re (SW2), mi (SW3), fa (SW4), so (SW5), la (SW6), ti (SW7) and each of ...
0
votes
0answers
78 views

Make transistor slightly turn on

simulate this circuit – Schematic created using CircuitLab I have successfully made an LED flash to the beat of the music using a PAM8403, an RC low pass filter and two 2n2222 in a darlington ...
0
votes
1answer
163 views

Can an all-tube guitar amp be damaged by flyback voltages?

Inspired by this question: https://music.stackexchange.com/questions/66443/how-to-rewire-my-cabinet-properly And this quote from a comment on the question: I've read that with tube amps, this isn'...
1
vote
3answers
73 views

Battery size for street musician gear [closed]

I am a musician and we are taking our show to the streets, away from wall sockets. For this, we will be using a 300W inverter that I have lying around, with a car battery of some size {?} We have: ...
0
votes
1answer
80 views

How to prototype analog audio processing?

How to prototype analog audio processing? Should I merely trial with analog electronics or should I simulate the circuits in software first? Particularly, I'm interested in discovering new forms of ...
1
vote
0answers
43 views

Measuring voltage difference between two pins using audio inputs on a bluetooth module

I'm fiddling with this module based on the popular bluetooth module CSR8635 https://www.tinyosshop.com/index.php?route=product/product&product_id=875. All I would like to do is create a simple AC ...
0
votes
0answers
214 views

Leaking Audio using Vishay LH1518AAB

DateSheet for Vishay LH1518AAB Digi-Key Part Number LH1518AT-ND 1I created a PCB that switches audio sources for up to 5 speakers. As you can see in the schematic each output has two LH1518AAB ...
26
votes
5answers
3k views

Does cassette tape change its velocity while playing?

Looking at the old cassette tape, From the POV of the head, let's say that it reads at speed \$v\$ (the magnetic medium scrolls at speed \$v\$). But looking at the right wheel, which is the one that'...
0
votes
2answers
212 views

Need help with TI SN76489 Sound Chip

I'm working on a project which uses the Texas Instruments SN76489 integrated circuit, which was used to make sound in arcade games and Sega games from the 80's and 90's, I believe. I made a similar ...
0
votes
1answer
90 views

My transitor amplifier is deamplifying

I have built the following circuit intended to be an amplifier. When I hook the input up to my phone via a guitar cable and the output to a 4 ohm speaker it produces a lower volume than plugging the ...
0
votes
1answer
72 views

Suppress Certain Overtones In A Musical Instrument's Sound Wave

So, just like the title suggests, my college professor and I are trying to suppress certain overtones of an instrument's sound. I have a microphone hooked up to an oscilloscope, and I'm using the ...
-1
votes
2answers
240 views

How to connect pc speaker to 2 channel dvd player [closed]

I am having Creative Inspire M2600 pc speaker. I need to connect it to a dvd player which having output of 40w-40w and not having a 3.5 mm out. Can i connect the dvd output to a 3.5 mm female jack and ...
6
votes
5answers
1k views

How do I mix two audio tones from two 555s to make a polyphonic chord?

I have set up two 555 chips in astable mode to produce a tone each through a speaker. However, I am not sure how to mix them together to produce a musical chord. If I directly combine the two ...
0
votes
1answer
222 views

Best circuit to play music in car, using ISO 10487

instead of using a radio, I want to install a Raspberry Pi 3 with my own features in the 2Din Slot, so I have to make my own circuit to play audio. I tried with the following modules based in LM386 ...
1
vote
2answers
102 views

ADC for many piezos at once

I'm building an electronic musical instrument, using piezoelectric contact microphones as inputs. I want ~80 buttons, each with a piezo connected to an ADC. The idea is that you hit the piezo, then ...
3
votes
5answers
776 views

When should an audio pre-amp use a differential input

As a guitarist, very familiar with the various types of noise that can wreak havoc with electric guitars, I've been mystified at how infrequently guitar amplifier inputs have employed differential ...
3
votes
2answers
355 views

How to power a button's LED within a guitar?

I'm working on a guitar, and the plan is to use three latching push buttons so that each pickup can be turned on and off individually. I'm fairly confident that the following diagram should work for ...
0
votes
2answers
726 views

How does vacuum tube heating (heater voltage) affect tube performance/sound?

I have replaced a 12AX7 tube with ECC85 in my guitar amp. Seems to work great and sound great. The part that is questioning me is whether the sound is being at its best because it takes a good 20-30 ...
0
votes
3answers
1k views

Why does this circuit produce a static noise?

I was just designing this Common emitter transistor amplifier this morning. simulate this circuit – Schematic created using CircuitLab I have removed the input in the circuit intentionally. ...
0
votes
2answers
2k views

Arduino Audio Input from AUX cable

I want to feed Audio input (music played in my phone or laptop) to Arduino using an AUX cable(3.5 mm). I know that we need to offset and amplify the signals as the Arduino takes input from 0 to 5v ...
0
votes
1answer
84 views

Audio Circuit to Remove Vibrato while Preserving Word Detail

In music, vibrato describes the warble effect often added in by singers as they sing. I was trying to come up with a circuit to remove it from an audio signal, almost like a "vocal stabilizer" ...
-5
votes
2answers
3k views

What resistors and capacitors do on a audio circuit? [closed]

I'm a newbie, hobbyist, and i build guitar stompboxes fx using existing schematics. After building some of them i noticed they all use resistors, capacitors, and basic 3 pin transistors... my ...
-5
votes
3answers
2k views

9-pin mini-DIN - zero resistance between some pins [closed]

There's a volume knob connected to a speaker system with 9-pin mini-DIN. The volume knob contains potentiometer to control volume and is also in charge of turning the system on and off (by turning the ...
0
votes
1answer
127 views

Questions About Schematic

I am working on a color organ and want to use a design similar to this. I understand the gist of the schematic, but I have a few questions about it and how it works. First: I understand that it is ...
0
votes
1answer
178 views

Music Controlled LEDs [duplicate]

I know there are tons of examples of music driven LED circuits out there, but they mainly control just one LED or one string of them. I want to make a circuit that will control quite a few LEDs, with ...
-2
votes
1answer
66 views

Downloading custom audio in musical toys DIY [closed]

I am a computer science student and recently interest built into electronics . I want to ask how can i download custom audio in musical toys like this . All i have is this kind of phone toy, Please ...
0
votes
1answer
505 views

Led reactive to bass preout from headunit [closed]

I am stuck with the following problem. And please keep in mind that my understanding of electronics is not the best, I am simply asking for advice on building my project. I have created a circuit ...
0
votes
2answers
101 views

Data received when earpiece connected to audio jack? [duplicate]

I'm still new to electronics and signals. I'm currently doing a project, and i have to detect the type of earpiece connected to an audio jack. So far, i found out that when you plug in your earphone/...
-2
votes
3answers
2k views

DIY: Led strip synced with music doesn't work

I made led strip synced with music using this schematic I used bd241c instade of tip 31. When i connect 5V and single LED it works fine but when I put 12V and LED strip it doesnt work. Can someone ...
0
votes
1answer
832 views

LED Music Visualizer on Headphones

I am currently trying to make an LED music visualizer that goes to music and attaches to my headphones. The ideal solution would be to have the LEDs run from the audio circuit from a smartphone (with ...
1
vote
1answer
317 views

Does using multiple speakers degrade quality?

I have an amp and 4 speakers. I want to "daisy chain" the speakers together like so: I'm trying to figure out if doing series and/or parallel connections in the diagram above will degrade the sound ...
1
vote
1answer
227 views

Simple Audio Sampler And Looper

I am seeking to build a small drum pad that can trigger short mp3 files. Here there are a lot of specifications and I don't expect to have everything explained, but any tips on how to go about making ...
0
votes
1answer
69 views

Shorting wire from headphones

Im working on making a ultrasonic sustain pedal for a keyboard using an Arduino. I've looked up some tutorials on physical home made sustain pedals and it looks like you need to ground all the wires ...
-1
votes
1answer
3k views

wiring from car amplifier to leds syncing to bass [closed]

I have 12 V batteries, 2 1500-watt amps and 2 Ω each, and 2 subwoofers at 2 Ω each. I was planning on buying 4 blue 12 V led light strips that run at about 100mA each. I would like it to brighten/dim ...
0
votes
1answer
361 views

I2C hangs during loop

I have an arduino, accelerometer and a simple audio synthesizer circuit. My goal is to receive data over I2C from accelerometer to control the synthesizer. However I cannot get both the things to ...
1
vote
1answer
678 views

Safely shutting down 19V mini PC when power fails

I am adding an Intel NUC (4"x4" i5 PC, 12-19V, 10A@19V) to my guitar effect pedalboard for all kinds of fun signal processing with Ableton Live and Max/Msp. I'm building a 12V 20A power supply using ...
0
votes
1answer
576 views

Input / output voltage standards for modular analogue synthesizer

I'm investigating building a modular analogue synthesizer, and learning electronics along the way. I want to get a firm understanding of the supply voltage, inputs and outputs specification that is ...
1
vote
1answer
427 views

LM3886 full amp reduces hi freqs

I've bought this kit and successfully assembled it. I use 23.4-0.23.4 V power source and two ELZET 10000uF caps. So, after I connected my speakers (by the way it is Amphithon (Амфитон) 25АС-027 4 Ohm,...
2
votes
1answer
6k views

How To Blink LED's with MOSFET in response to Music?

trying to blink LED's by music. i've done this circuit no problem: Now wish to accomplish the same thing using an N-channel Mosfet. I tried this circuit, and got no blinks. Also no success with ...
3
votes
4answers
879 views

Beats per minute calculator

Basically I want to create a BPM calculator on an ATMega1284. So I have a mic hooked to the ADC already (with potentiometer). I can probably calculate the BPM by getting samples for a while and ...
1
vote
2answers
2k views

Is it possible to use half of a LM13600 instead of a CA3080?

I'm in need of a replacement for the CA3080 for my VCO that I would like to build. I have come across the LM13600 and was wondering if anyone knew if I could just use half of it and operate it without ...
0
votes
1answer
255 views

Designing a polyphonic synth [closed]

I am currently designing a synth based on various designs online and modifying them(the vco). I am not sure what I'm going to use in between the MIDI and VCO. What parts/circuits would I need to add/...