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Questions tagged [music]

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What voltage comes from a standard 6.3 mm instrument cable?

I am designing an electric percussion instrument using various metal strings and objects that are hit my solenoids. Pickups record the sound.I need to know what kind of voltage and current instrument ...
Crisps's user avatar
  • 1
1 vote
1 answer
44 views

Choosing a durable 4 wire connection coming from the edge of a cylinder [closed]

I am making a set of electronic bagpipes, and i need to connect the PCB holding the optical sensors for the fingers to a synthesizer board through a cable of a couple of meters. For the moment i haven'...
max22-'s user avatar
  • 11
0 votes
1 answer
74 views

How to make an active crossover Opamp filter an audio signal

Background I've built a few passive crossovers, but never done anything active and my electrical skills are newb at best. I wanted to test out an active crossover after reading into by-amping a stereo ...
Ricardinho's user avatar
1 vote
1 answer
68 views

Discrete Fourier transform for musical analysis

I am a senior in highschool and am currently trying to conduct an exploration on Fourier analysis, specifically using the discrete Fourier transform to analyze a chord played on my piano. Basically I'...
Ralph Khouri's user avatar
0 votes
2 answers
239 views

I need help setting up a guitar speaker jack plate

I have a 1x12 wedge cabinet I'm repurposing into a guitar speaker cab. It has a jack plate with two 1/4" mono jacks. What I'd like to do is reset the jack plate in such a way that it can: Run ...
kkitchen63's user avatar
0 votes
1 answer
902 views

Tesla coil music

I want my solid state Tesla coil to play music. I built it to only accept square wave input. Does anyone know howI take a normal melody (no voice,) only keep the main soundtrack (no bass or anything ...
George Chita's user avatar
7 votes
3 answers
262 views

Random high-amplitude frequency in guitar effect circuit

I'm building an analog distortion effect for my guitar. During testing I measured a random 470 kHz signal with an amplitude of 500 mV. Where does this signal come from, and how do I get rid of it? I ...
Lukas's user avatar
  • 73
1 vote
1 answer
209 views

Problem when playing music with Arduino

I am using an Arduino Nano in combination with a SD card to play some music. I have loaded some .wav files on my SD card, the card initializes, everything runs correctly, but on my output pin for my ...
George Chita's user avatar
0 votes
0 answers
77 views

Where to start theremin project

I am studying electronics and would like to design a theremin that uses discrete components. I have read that RF oscillators such as those needed for a theremin are not likely to work if built on a ...
nuggethead's user avatar
  • 1,139
0 votes
0 answers
165 views

How do I clean up the static in this musical flyback transformer?

So I built this musical flyback transformer off of Franzoli Electrctronics schematic, https://franzolielectronics.com/easy-flyback-i/. I had to go the through hole method and it works. However, the ...
Travalon 's user avatar
2 votes
2 answers
74 views

How can I modify a synthesizer with multiple voices to include a discrete line-out jack for each voice?

I've got this vintage synth called the Suzuki Omnichord OM-84. It's principally an electronic autoharp, with a metal ribbon you can strum or tap to make notes as though you're playing strings, but it ...
squiddleywalker's user avatar
0 votes
1 answer
146 views

LM748 uses positive rail as an input on a 1980's UK sound effect generator. Is this an old trick that I've never seen?

TP9 is a +/-15V signal from a VCO. The signal to the base of Q7 is 0 - 10V from another card that is presumed to be basically DC. The multiplier AR11 has a sound coming from an LFSR circuit on another ...
B Conk's user avatar
  • 11
0 votes
3 answers
118 views

Distortion pedal volume and tone control messing up circuit

I have built a distortion pedal with 3 variable controls: gain, tone and volume. R8 is my gain control (it will be a potentiometer with 50k to 500k resistance.) R5 is the tone control, (low pass ...
Marko Jurisic's user avatar
1 vote
0 answers
282 views

What kind of solenoid could be used to engage piano keys like in this example?

I was inspired by the video of Mark Rober and the self-playing Edelweiss piano and would like to build and retro fit a similar contraption on my piano. In the video, a type of solenoid is shown that: ...
Trevor's user avatar
  • 111
1 vote
1 answer
285 views

Listening to electromagnetic fields

In Nicolas Collins' book Handmade Electronic Music there is section on picking up electromagnetic fields and listen to them simply by connecting the wires to a RadioShack Mini Audio Amplifier. It says:...
ali's user avatar
  • 133
3 votes
1 answer
171 views

How can this 74 series Inverter circuit be analyzed?

I'm trying to analyze the keymech scanning / sampling circuit in the WASP synthesizer So far I understand that the keymech is sampled one key at a time by the 74 series logic driven by the dual ...
andowt's user avatar
  • 1,008
0 votes
1 answer
219 views

Proper audio amplifier for a 12W-RMS / 60W maximum speaker

I have two different amplifiers TDA2030A ~ 18W amplifier and a TPA3118 ~ 60W and a medium size speaker labeled 12 watt RMS - 60 watt maximum. I don't know how the RMS wattage is so far different from ...
payam_sbr's user avatar
  • 117
-1 votes
1 answer
127 views

Music reactive LED brightness

I want to build a vactrol. That means I have to build a device that converts the incoming audio signal into brightness levels. I found this. I tried building this: This does not seem to work. The LED ...
Joh's user avatar
  • 101
0 votes
1 answer
174 views

Mimicking the output of a piezo sensor with a membrane potentiometer

High level I'm trying to use an electronic drum pedal as an electronic drum trigger. My specific e-drum unit has only one pedal input, so I need to repurpose a drum trigger input in order to use more ...
Charles Kessler's user avatar
1 vote
0 answers
43 views

Connected my audio input to two music systems by splitting the input, but the one with subwoofer produces continuous 100Hz hum

I have 10 year old Creative 2.1 audio system that has fairly capable subwoofer, and combined its input with a TPA3110 2x15W stereo amplifier module (for better treble). When both systems are powered ...
Zenvir's user avatar
  • 11
0 votes
0 answers
39 views

12V Mobile Power Setup -

I am looking for feedback and experienced insight as I'm new to this world. I have a 12V 18Ah AGM battery connected to a 300W 110V pure sine wave inverter with the intention of running a 140W speaker ...
indiana robbins's user avatar
0 votes
0 answers
174 views

Can I replace a music toy speaker with a 6.3mm jack?

This toy keytar gas an 8 ohm speaker and adjustable output volume. If I simply replaced the speaker with a 6.3mm jack to use it with guitar pedals and speakers that can handle the line level, would I ...
Anna's user avatar
  • 795
0 votes
0 answers
59 views

My Firebird electric guitar's bridge pickup is operating at a very low volume. What could be causing this and how can I fix it?

I have a Firebird electric guitar with two mini humbucker pickups. Both pickups have been good since I got it, but suddenly the bridge pickup stopped working. The neck pickup is fully operational, but ...
haydnwarne's user avatar
2 votes
1 answer
1k views

What is a typical duty cycle for Bluetooth headsets playing music?

When conducting SAR testing for Bluetooth headsets/earbuds, multiple tests are typically carried out using different types of modulation, all at a “worst case” i.e. duty cycle of 100% What is a ...
Silica quartz's user avatar
1 vote
1 answer
251 views

Is it relatively simple to design an ADC to ADAT interface with only a Toslink port?

For this project (I'm an experienced audio engineer but a relative beginner in electrical engineering) I really want to integrate a simple ADC to ADAT circuit in a patchbay I'm building so that I have ...
Sweet Pazano's user avatar
0 votes
1 answer
115 views

How do digital pianos work? [closed]

I know somehow it combines different harmonics to synthesize notes, but I don't exactly know how this is implemented.
Ardawan's user avatar
0 votes
0 answers
553 views

Using an Audio Signal for a Control Voltage for an Analog Synthesizer

I have a Moog Sub 37 Analog Synthesizer and a Korg SV-1 keyboard. Can I take the audio out of either the line outs or headphone out of the Korg and plug it into the volume or filter Control Voltage (...
Rozgonyi's user avatar
  • 105
0 votes
1 answer
592 views

How can I turn a midi keyboard to a stand-alone piano using Arduino or any other way? [closed]

I have a midi keyboard, but I find it frustrating to start PC, DAW system every time I want to play. Is there a way to use Arduino to create an on the go stand alone piano. (It should work like a ...
Aether's user avatar
  • 193
2 votes
1 answer
194 views

Does cutting the covering of subwoofer wire affect the sound quality?

I have Sony 5.1 channel sound system. There is some cut on covering of subwoofer wire. The copper wire is not affected at all. So, I am curious to know whether it will leak the passage of sound and ...
NSPratik's user avatar
  • 139
0 votes
0 answers
337 views

Prevent click/pop from transient when bluetooth receiver disconnects?

I have a Logitech bluetooth receiver connected to my hifi to allow kids etc to play music from iPhones/ipads. However, it seems that the receiver itself has a sleep mode when no signal is being sent,...
bjw's user avatar
  • 101
0 votes
1 answer
578 views

Does anyone know the YM2410 pinout (from the PSS-130 and PSS-30 line of Yamaha keyboards)?

I was recently making modifications to a PSS-130 Keyboard, and before I knew it, the keyboard would cease to make noise. I have narrowed the issue down to the main chip on the PSS-130, the Yamaha ...
Kevin Yang's user avatar
0 votes
4 answers
295 views

How did old games from 8-bit era game consoles store music? [closed]

Some time ago I found that the audio of a game called Ninja Gaiden 1 (NES) is around 1 hour. This is excluding the sound effects like jump and hit e.t.c. Then I found that the entire game size is ...
quantum231's user avatar
  • 11.9k
2 votes
0 answers
77 views

Can i replace a De-9 port with something else? [closed]

I was given an old piece of DJ equipment from the late 90s and unfortunately, the only way to connect it to a pc, which is what its meant for, is through a De-9 port/cable. And my pc doesn't support ...
scooter 505's user avatar
0 votes
3 answers
556 views

Is it possible to play music with a PIC16F628A

Is it possible to generate and send PCM audio from a PIC16 (or an arduino/atmel)? It does have an analog port, so it should work right? And if it does, is the PIC fast enough to generate the ...
user2741831's user avatar
0 votes
1 answer
683 views

AUX input or microcontroller in a musical tesla coil?

Alright so I am making a musical tesla coil. I have seen some online tutorials and what I noticed is that some people are giving the audio input using a microcontroller and programming it to produce ...
hp2505's user avatar
  • 1
53 votes
5 answers
7k 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 ...
Assad Ebrahim's user avatar
0 votes
2 answers
535 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 ...
Rob Reuss's user avatar
  • 103
0 votes
3 answers
79 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 ...
F. Jatpil's user avatar
  • 103
4 votes
2 answers
504 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/...
user avatar
0 votes
2 answers
290 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/...
Radosław Majchrzak's user avatar
1 vote
1 answer
126 views

Programmable Melody chips [closed]

Is there a component, (that is not Raspberry Pi or other mini computer it would be too costly for my purpose), comparable to simple melody chips like UM66 or BT66 But programmable in nature, so that I ...
Ákos Nikházy's user avatar
2 votes
6 answers
508 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 ...
user3147192's user avatar
0 votes
2 answers
220 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 ...
DiggDugg's user avatar
  • 101
0 votes
1 answer
661 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'...
Todd Wilcox's user avatar
1 vote
3 answers
127 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: ...
lefthandluke's user avatar
0 votes
2 answers
313 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 ...
mavavilj's user avatar
  • 129
33 votes
6 answers
9k 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'...
Royi Namir's user avatar
0 votes
2 answers
561 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 ...
user108391's user avatar
0 votes
1 answer
163 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 ...
Shibby Shtank's user avatar
0 votes
1 answer
139 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 ...
Eric's user avatar
  • 17