Revision as of 22:08, 28 September 2008

Homework #1: Real-time Audio, Buffers, and Waveforms

Due date: 2008.10.8 11:59:59pm (or thereabout), Wednesday.

create a program that is capable of real-time audio input/output
start with a blank C++ program
create a minimally compilable program (e.g., something like HelloWorld):
- if you'd like, you can start with this very basic makefile (may need to make changes)
next, add real-time, using the RtAudio Library (version 4.0.4)
- download it from here
- even though it's useful to briefly look through the package, the only files you'll need are:
  - RtAudio.h (the header file for RtAudio, it contains the class definitions)
  - RtAudio.cpp (the implementation)
  - RtError.h (header containing various error handling constructs for RtAudio)
this is similar to (but not identical to) the example we did in class (see HelloSine):
- your program is using an updated RtAudio interface, which is different from the one we used in class
- NOTE: even though the code is nearly all there, it's infinitely more useful to actually write the code from scratch - even if you type it in line by line!
implement the callback function to generate the expect number of samples per call for a sine wave at 440Hz
the overall behavior when you run the program should be a continuous sine tone at 440hz...
to quit: press ctrl-c

turn in all files by putting them in your Library/Web/154/hw1/ directory, and concise online documentation + readme

1) source code to the project (*.h, *.cpp, *.c makefile, etc.)
2) online page for your project (should be viewable at http://ccrma.stanford.edu/~YOURID/154/hw1/). It should include:
- links to your files of various kinds
- instructions on building the project (for example, anyone in the class should be able to download
- a short README text section that:
  - conveys your ideas/comments in constructing each program
  - describes any difficulties you encountered in the process
3) email Ge with the link to your web page, as a confirmation that you are turning the homework in

@@ Line 7: / Line 7: @@
 * start with a blank C++ program
 * create a minimally compilable program (e.g., something like HelloWorld):
-** if you'd like, you can use this very basic [http://ccrma.stanford.edu/courses/256/hw/1/makefile makefile]
+** if you'd like, you can start with this very basic [http://ccrma.stanford.edu/courses/256/hw/1/makefile makefile] (may need to make changes)
-* next add real-time, using the RtAudio Library (version 4.0.4)
+* next, add real-time, using the RtAudio Library (version 4.0.4)
 ** download it from [http://www.music.mcgill.ca/~gary/rtaudio/ here]
 ** even though it's useful to briefly look through the package, the only files you'll need are: