SGI audio Frequently Asked Questions (FAQ)

• Introduction
• -1- How do I program the Motorola 56000 DSP on the Indigo (R3K and R4K)?
• -2- How do I connect my stereo to my Ind{igo,igo2,y}?
• -3- How do I change the volume of the audio out the back of my machine?
• -4- Indigo2 speaker seems quieter than my Indigo. Am I imagining things?
• -5- I need to crank up the input gain on Indigo2 to use the microphone successfully. What's the scoop?
• -6- The glossy paper says that Indigo2 and Indy have 4- channel input and output. That sounds really cool. How do I use it?
• -7- Okay, so 4-channels of input and output is great, but I need more. Can I get more channels of audio for my machine?
• -8- Now that I have IRIX 5.2, I can't seem to find audio.h and libaudio.a in order to compile my audio code. What gives?
• -9- I like the boot tune, but it's just a bit too loud. How do I tone it down a bit?
• -10- How can I change the output speaker/headphone volume from a shell script?
• -11- What 3rd party audio solutions exist for Silicon Graphics machines?
• -12- I'd like to write my own audio programs. How do I get started?
• -13- How can I get the keyboard beep out line out/digital out on Indigo2?
• -14- How do I suppress the keyboard bell (which *does* come out the line out and digital output) on an Indy?
• -15- Why does /dev/audio not work on my Ind{y,igo2,igo}?
• -16- Where can I get a MOD player for SGI?
• -17- I need audio for my Onyx. What are the details?
• -18- Why does my floating point signal processing routine, when given certain inputs, run incredibly slowly and consume all of the CPU in _system_ or _interrupt_ time?
• -19- What are the audio features of SGI machines?