Tutorials and Topics - Peabody Computer Music

Audio I/OAudio input andoutput with MSPAdvanced ad_rewire FeaturesWhen you build a standalone application using Max/MSP you can use the ad_rewiredriver in your standalone and it will create an ReWire Device that works independently ofMax/MSP and other Max/MSP-created standalone applications. By default, the ReWireDevice will take on the name of your application and will have 16 channels. You cancustomize this by editing the msprewire.config file in the support/ad folder for yourstandalone. Note: This file doesn’t exist until the default one is created the first time youlaunch your standalone and choose ad_rewire in the DSP Status window.The msprewire.config file is located in the ad folder found in the following locations:Macintosh: Library/Application Support/Cycling ‘74/ad/Windows: c:\Program Files\Common Files\Cycling '74\ad\In a Max/MSP-built standalone this is in the standalone’s support/ad/ folder. Themsprewire.config contains two lines that specify the name that ReWire will use for thedevice and the number of audio channels. You can edit this to change the behavior ofMax/MSP or your standalone.Using ASIO on WindowsSelecting an ASIO driver from the DSP Status window allows MSP to talk directly to anaudio interface. To use ASIO soundcards your device needs to be correctly installed andconnected; The MSP ASIO driver will find it at startup.All correctly installed ASIO devices should be available to you for selection in the DSPStatus window. However, MSP does not check to see if the relevant audio interfacehardware is installed correctly on your system until you explicitly switch to the ASIOdriver for that interface card. If an ASIO driver fails to load when you try to use it, anerror message will appear in the Max window (typically, an initialization error with acode of –1000) and the menus in the rest of the DSP Status window will blank out.Switching to the MME and/or DirectSound driver will re-enable MSP audio.53