Questions tagged [audio]
Questions about designing electronics for measuring, processing, and amplifying audio signals.
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Audio project converting TSH-4 headset to 3.5 mm audio jack
I've been trying to connect this TSH4 headset to a 3.5 mm audio jack. The headset has kind of a weird setup, with Mono audio + and - being the top pins (I don't know which is which, but the polarity ...
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Making audio signals imitate USB flash drives [closed]
If there is a USB port designed for USB flash drives that plays the audio files in that drive when it is connected --such as the ones commonly found in cars-- is there any practical way to turn an ...
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Modifying TI schematic to learn more about amplifiers
Let me start off by saying that I'm a complete beginner. I've watched some videos on amplifiers and read about them but it's hard for me to analyze circuits that don't match exactly to the examples I ...
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Audio engineering: amplifying two different sources
I've started a small project to renovate/rebuild an old record player for my wife. I have a degree in Electrical Engineering, but it's been almost 15 years since I last had to project/build a circuit, ...
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Can an audio isolation transformer between a preamplifier and an amplifier cause the amplifier's fuse to blow? [closed]
I'm building a microphone preamplifier. I was having problems with hum (intermittent ground hum when touching the case) and decided to try adding an audio isolation transformer (600 ohm : 600 ohm) ...
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Inline volume control for analog audio signals with push buttons [closed]
I want to build something to control the amplitude of analog audio signals between the source (line level analog audio output already extracted and decoded from an HDMI source) and the AMPs. In ...
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PCB digital sound input and output
I've designed a simple 3-band equalizer circuit. I've used 3.5 mm audio input connected with computer via 3.5 mm audio jack for input, and basic small speaker for output.
In all my references, many ...
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Audio amplifier for school project
For a school project, we have to explain this design of a audio amplifier. We have only been able to understand to parts marked with colored rectangles.
The design comes from the book audio power ...
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Identify and substitute f1404zs
I need help understanding which chip I need to buy.
First, I hope this is the correct community; if not, I apologize.
My intention is to repair a Mark Levinson 86280-0w690 audio amplifier, inside ...
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How to generate a 50-100 Hz 12 Vac sine wave for audio tone from 5 VDC (PB0 pin) atmega164p microcontroller [closed]
I have programmed to ATmega 164P to make PBO high when PC1 is low. In programming, I'm adding other peripherals as well.
But I am facing one issue regarding generating a tone. I have drawn low pass ...
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How to replace microjack on stereo earplugs with microphone [closed]
I broke a microjack connector. It is attached to a set of stereo earplugs with built in microphone. I know how to solder, but I am not sure how to find the correct replacement plug and how to identify ...
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Boost or buck audio input to minimum and maximum levels
Similar to Simple circuit to boost line-level audio
Background:
Some songs start out really quiet - Queen is notorious for this - and then eventually ramp up to passable audio levels. To hear them, ...
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How does one add a volume control to this circuit?
My uneducated guess is to add a potentiometer at R6. Can anyone confirm?
Image courtesy : amplifiercircuit.net
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How to modify frequency of an analog signal [closed]
I want to create my own pcb. First step is to design my circuit. I thought about a voice modifier.
So, in the breadboard I should put:
a microphone (an electrostatic electret microphone)
followed by ...
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switchable summing audio mixer volume troubles
Consider this audio mixer. There are 3 sources that may play any kind of audio (the sine generators are just illustrative). You can switch any of them to either of 2 outputs using the SPDT switches.
I ...
