Howtosignalprocessing
- What are the 2 types of audio signal?
- How do I connect two audio signals?
- How do I compare two audio files in audacity?
What are the 2 types of audio signal?
An audio signal is a representation of sound, typically using either a changing level of electrical voltage for analog signals, or a series of binary numbers for digital signals.
How do I connect two audio signals?
The simplest way to combine two signals is with two resistors as shown in the circuit diagram below. The ground connecton is shared between both inputs and output. The quality can be improved by adding an output buffer (opamp), but that complicates things in requiring an IC, power supply, (de)coupling caps, ...
How do I compare two audio files in audacity?
Re: Comparing two supposedly identical tracks.
Import them both into Audacity. Apply the "Invert" effect to one of the tracks. Select both tracks, then from the "Tracks menu > Mix and Render". If the tracks were identical, the result will be silence.
