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Naively mixing two (or perhaps more) audio signals ...

    https://electronics.stackexchange.com/questions/103435/naively-mixing-two-or-perhaps-more-audio-signals
    The simplest way to combine two signals is with two resistors as shown in the circuit diagram below. simulate this circuit – Schematic created using CircuitLab. The ground connecton is shared between both inputs and output.

Mix two signals (more efficiently) | Computer Audio and ...

    https://sites.uci.edu/camp2014/2014/04/18/mix-two-signals-more-efficiently/
    We want a blend (mix) of two sounds, and we specify the balance between the two as a value from 0 to 1, where a balance value of 0 means we get only the first sound, a balance value of 1 means we get only the second sound, and 0.5 means we get an equal mix of the two sounds. The way we calculate this is y[n] = x 1 [n]+balance(x 2 [n]-x 1 [n])

MATLAB: How to mix two audio signals - iTecTec

    https://itectec.com/matlab/matlab-how-to-mix-two-audio-signals/
    So to make signal 2 half the amplitude of signal 1, you'd use -6 dB as follows: y3 = (y1*(10^(0/20)) + (y2*(10^(-6/20)); All of this assumes that the two signals are the same dimensions and have the same starting level.

Using diodes to mix 2 audio signals into one set of ...

    https://electronics.stackexchange.com/questions/136127/using-diodes-to-mix-2-audio-signals-into-one-set-of-speakers
    They will massively corrupt your audio signal, and it will just sound utter rubbish. The simplest method is to use a passive mixer. That simply consists of two resistors per channel: simulate this circuit – Schematic created using CircuitLab You can tie all the ground wires together without resistors.

Algorithm(s) to mix audio signals without clipping ...

    https://dsp.stackexchange.com/questions/3581/algorithms-to-mix-audio-signals-without-clipping
    From reading around, a common method of mixing is: result = A + B - AB, where A and B are the two normalized samples being mixed, and AB is a term to ensure louder sounds are increasingly "soft-clipped". However, this introduces a distortion of the signal.

How to Combine Multiple Signals and Still maintain Total ...

    https://www.videomaker.com/article/f3/1541-how-to-combine-multiple-signals-and-still-maintain-total-sound-control
    In its simplest incarnation, a “mixer” is only three wires twisted together and wrapped with tape (or you can buy a “Y” adaptor). Two signals combined in this manner give you just a little extra flexibility for almost no expense. This is called passive mixing.

A quick-and-dirty audio sample mixing technique to avoid ...

    https://atastypixel.com/how-to-mix-audio-samples-properly-on-ios/
    A quick-and-dirty audio sample mixing technique to avoid clipping. In the real world, when you hear two sounds at once, what you’re hearing is the combination (in the “+” sense) of the two noises. If you put five hundred drummers in the same room and, avoiding the obvious drummer jokes for now, told them all to play, you’d get drummer 1 + drummer 2 + … + drummer …

Making an Audio Mixer : 20 Steps (with Pictures ...

    https://www.instructables.com/Making-an-Audio-Mixer/
    Step 2: Mixing the Signals. A stereo signal is two channels (left and right) which are actually two separate audio signals with a shared ground. If we want to combine two stereo signals into one, we will need to mix together the left channel of each stereo signal, and …

How to best combine two audio signals to feed into an ...

    https://organforum.com/forums/forum/electronic-organs-midi/theatre-electronic-organs/47618-how-to-best-combine-two-audio-signals-to-feed-into-an-amplifier-for-a-new-audio-cha
    Next to each channel, there is an AUX 1, 2 or 3 for auxiliary input via RCA Jack that mixes into the amplifier. This is basically what I want to do, except It will have a few signals. Referring again to the output circuits schematic, they appear to use a circuit like this to do the mixing: (See screen shot)

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