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Circuit Review: Audio Routing | All About Circuits
https://forum.allaboutcircuits.com/threads/circuit-review-audio-routing.162197/
The audio from the VS1053 comes from the codec channels and the current returns via GBUF. You can’t ground GBUF because it’s around 1.2V w.r.t. the codec’s supply. In that case, grounding would cause a short. But if I had an external amplifier or other circuit (like Bertus’ pan circuit, the input jack would need to be grounded.
Circuit routes audio signals between equipment - EDN
https://www.edn.com/circuit-routes-audio-signals-between-equipment/
Circuit routes audio signals between equipment. The audio-signal router in this Design Idea can automatically redirect cable connections between the audio equipment and an amplifier/receiver for dubbing or playback purposes without causing distortion or noise to the signal ( Figure 1 ).
Circuit Review: Audio Routing | Page 2 | All About Circuits
https://forum.allaboutcircuits.com/threads/circuit-review-audio-routing.162197/page-2
A Bluetooth transmitter will not have an audio input impedance of 8 ohms or 16 ohms which is a speaker impedance. Instead its input impedance will be 10k ohms or more. An audio coupling capacitor value is not calculated to pass frequencies higher than you can hear. Instead it is calculated to...
Integrated circuit for routing of audio signals - Patent ...
https://pubchem.ncbi.nlm.nih.gov/patent/WO-2011010133-A1
WO-2011010133-A1 chemical patent summary.
Audio Circuit and PCB Design Tips – Electronic Product …
https://electronic-products-design.com/geek-area/electronics/audio/audio-circuit-pcb-design-tips
/ Geek Area / Electronics / Audio / Audio Circuit and PCB Design Tips Designing audio circuits remains a challenge and aspects of it are still often considered a bit of a black art. Even the best designers often have to build more than 1 PCB to produce a high quality noise free design.
Understanding Audio Jack Switches and Schematics | …
https://www.cuidevices.com/blog/understanding-audio-jack-switches-and-schematics
Switching Audio Between Speakers and Headphones. In the first figure, the plug is not inserted, so the terminal 10 and 11 switches are closed routing the audio to the speaker. In the second figure, the plug is inserted which opens the 10 and 11 contacts thus routing the audio to the headphones. Example of switching audio between speakers and headphones
esp32 audio design guidelines en - Espressif
https://www.espressif.com/sites/default/files/documentation/esp32_audio_design_guidelines__en.pdf
The circuit design of an audio product, based on the ESP module provided by Espressif, can be broken down into three major sections: • Power supply and GND plane. • Design rules of audio chips. • Pin configuration of the ESP32 module. 1.1. Power Supply and GND Plane 1.1.1. USB/Battery Power Scheme
Optimised For Audio
http://www.ikonavs.com/OptimisedForAudio.pdf
Ground is frequently the most common connection in the circuit so having it continuous on the bottom layer usually makes circuit routing easier. It lowers the impedance of all ground connections in the circuit, reducing conducted noise. It adds a distributed capacitance to every net in the circuit,
Circuit-Audio Signal Detector/SwitchHobby Corner
http://www.discovercircuits.com/H-Corner/audio-signal.htm
The hobby circuit below will activate a transistor switch when it detects at least 50mv peak to peak of an audio signal. The switch could be used to turn on a relay, routing the signal to where it is needed. A single 3v lithium cell will power the electronic circuit for about 5 years.
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