Questions tagged [music]
The music tag has no usage guidance.
105 questions
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How do those car USB bluetooth dongles work?
So I saw one of those one of those car USB bluetooth dongles, and there's pretty much no information about them. All the info I have about it is this video: https://www.youtube.com/watch?v=tvCOpf4Ow4M,...
- 101
1
vote
1
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133
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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 ...
- 11
1
vote
1
answer
45
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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'...
- 11
0
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2
answers
291
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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 ...
- 101
1
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1
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77
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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'...
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2
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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 ...
0
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1
answer
1k
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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 ...
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7
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3
answers
273
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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 ...
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1
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1
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239
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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 ...
- 43
0
votes
0
answers
89
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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 ...
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0
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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 ...
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2
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2
answers
78
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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 ...
0
votes
1
answer
178
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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 ...
- 11
0
votes
3
answers
160
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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 ...
1
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0
answers
361
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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:
...
- 111
1
vote
1
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338
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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:...
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3
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1
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181
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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 ...
- 1,008
0
votes
1
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254
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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 ...
- 117
-1
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1
answer
139
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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 ...
- 101
0
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1
answer
207
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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 ...
1
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0
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45
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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 ...
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0
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0
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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 ...
0
votes
0
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202
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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 ...
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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 ...
2
votes
1
answer
1k
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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 ...
1
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1
answer
271
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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 ...
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1
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128
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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.
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0
answers
628
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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 (...
- 105
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1
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675
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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 ...
- 193
2
votes
1
answer
217
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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 ...
- 139
0
votes
0
answers
380
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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,...
- 101
0
votes
1
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627
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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 ...
- 116
0
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4
answers
306
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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 ...
- 12.2k
2
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0
answers
80
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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 ...
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3
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626
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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 ...
- 269
0
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1
answer
730
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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 ...
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54
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5
answers
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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 ...
- 626
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2
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573
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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 ...
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0
votes
3
answers
85
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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 ...
- 103
4
votes
2
answers
558
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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/...
Brunon
0
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2
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298
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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/...
1
vote
1
answer
137
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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 ...
- 141
2
votes
6
answers
548
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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 ...
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0
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2
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229
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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 ...
- 101
0
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1
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718
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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'...
- 512
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3
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143
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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:
...
- 21
0
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2
answers
326
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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 ...
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33
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6
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9k
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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'...
- 467
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2
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593
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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 ...
- 51
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1
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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 ...
