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						Connecting AUX input to circuit board | Circuit Digest
						https://circuitdigest.com/forums/general/connecting-aux-input-circuit-board
						In an attempt to improve the audio quality I have cut the cord off a pair of ear-pods and have soldered the wires connecting to the aux plug onto the circuit board where the original microphone connected to. This way the audio is transferred directly from the …
						 
						
						
						
						What is an AUXILIARY INPUT and how can I best use it
						https://learn.sonicelectronix.com/consumers-guide-to-auxiliary-inputs/
						An Aux input is a simplistic audio connection identical to the headphone socket. By pairing with an Aux-In cable, the interface allows you to input sound from any media device. The same concept can be applied to computers and TVs, since their Aux inputs allow for externally connected devices to play through.
						 
						
						
						
						AUX Input Options | Radio Modifications | Saddle Brook, NJ
						https://www.beckerautosound.com/aux-input-options
						Radios for this time period 5 series E60 6 series E63 7 series E65 (post facelift) have back-panel connections for aux input. There are three different options available. Either a 3.5 mm male jack (headphone) or a Bluetooth streaming module. AUX in cables Buy it now > Bluetooth Streaming Modules Buy it now Porsche Radios 1996 - 1998 CR210/CDR210
						 
						
						
						
						The Opa! Amp - IPod Amp for Aux-In : 11 Steps (with ...
						https://www.instructables.com/The-Opa-Amp-iPod-Amp-for-Aux-In/
						The jack’s max output is 300mV RMS, which drives headphones just fine, but most Aux Inputs are expecting 1V RMS as the max level. So when your MP3 player is saying “Blast it”, your stereo interprets that as “keep it pretty quiet”.
						 
						
						
						
						Building a Line Input Selector for Vintage Audio Systems
						http://www.tronola.com/Building_a_Line_Input_Selector_for_Vintage_Audio_Systems.pdf
						A line input selector (hereafter “LIS”) is a switch which selects between multiple line-level sources, such as CD, iPod, Tape, Tuner, etc. It provides a single output which may be routed to all amps or switched among them. A later article will cover an automatic amplifier switch. Design of the LIS
						 
						
						
						
						Using audio as an input - Audio - Arduino Forum
						https://forum.arduino.cc/t/using-audio-as-an-input/488499
						An Aux/Line-level (or loud headphone level) is around 1V and that's about right for the Arduino's 0-5V ADC input. However, the Arduino can't read the negative half of the AC audio signal, and in fact the Arduino can be damaged by negative voltages.
						 
						
						
						
						Arduino Audio Input : 8 Steps (with Pictures) - Instructables
						https://www.instructables.com/Arduino-Audio-Input/
						DIY Audio View Contest 6 People Made This Project! Almacha made it! inzenjer_banderas made it! Hamed7495 made it! wilroberts made it!
						 
						
						
							
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