Tutorials and Topics - Peabody Computer Music

Sound input: adc~Tutorial 13: Sampling—Recording and playbackFor getting sound from the “real world” into MSP, there is an analog-to-digitalconversion object called adc~. It recognizes all the same messages as the dac~ object, butinstead of sending signal to the audio output jacks of the computer, adc~ receives signalfrom the audio input jacks, and sends the incoming signal out its outlets. Just as dac~ hasa user interface version called ezdac~, there is an iconic version of adc~ called ezadc~.adc~ and ezadc~ get sound from the audio input jacks and send it out as a signalTo use the adc~ object, you need to send sound from some source into the computer. Thesound may come from the CD player of your computer, from any line level source such asa tape player, or from a microphone—your computer might have a built-in microphone,or you can use a standard microphone via a preamplifer..• Double click on the adc~ object to open the DSP Status window. Make sure that theInput Source popup menu displays the input device you want. Depending on yourcomputer system, audio card and driver, you may not have a choice of input devicethisis nothing to be concerned about.124