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Blip_Buffer 0.4.0: Band-Limited Sound Buffer -------------------------------------------- Blip_Buffer provides waveform synthesis and sample buffering with a high-level interface that allows easy generation of square waves and similar with high sound quality. Waveforms are specified by amplitude changes at times in terms of the source clock rate, then efficiently resampled to the output sample rate with adjustable low-pass and high-pass filtering. It is well-suited for emulation of the sound chips used video game consoles before the mid-1990s. Author : Shay Green <hotpop.com@blargg> Website: http://www.slack.net/~ant/ Forum : http://groups.google.com/group/blargg-sound-libs License: GNU Lesser General Public License (LGPL) Getting Started --------------- A series of tutorial programs and demos are included. To use a demo, compile and run a program consisting of the demo's .cpp file, the source files in player/ or sdl_player/ (as described below), and Blip_Buffer.cpp. The four numbered demos should be gone through first, since they show the basics. It is recommended that you use the SDL multimedia library when building the demos, which enhances them with live display, output, and interactivity. It is available at http://www.libsdl.org/ and works on most platforms. If you have SDL, compile the demos with the source files from the sdl_player/ directory. If you don't have SDL or want the demos to write their output to a wave sound file, use the source files from the player/ directory See notes.txt for more information, and Blip_Buffer.h and Blip_Synth.h for reference. Post to the discussion forum for assistance. Files ----- notes.txt General notes about the library changes.txt Changes made since previous releases LGPL.txt GNU Lesser General Public License Blip_Buffer.h Blip_Buffer and Blip_Synth Blip_Buffer.cpp demo/ Tutorials and demos 1.waveform.cpp How to generate a simple waveform 2.square.cpp How to make a square wave 3.clock_rate.cpp How the clock rate and sample rate work 4.continuous.cpp How to generate a continuous square wave multiple_waves.cpp Multiple waves can be added into a buffer stereo.cpp How to generate stereo sound using two Blip_Buffers treble_bass.cpp How treble and bass affect waveform buffering.cpp Three ways of buffering samples in a Blip_Buffer external_mixing.cpp How to mix an external sample buffer into a Blip_Buffer delta_synth.cpp How to use low-level delta mode of Blip_Synth sample_formats.cpp Reading samples in floating-point and unsigned formats sdl_audio.cpp Complete example for programs using SDL sound player/ Use with demos to write output to wave sound file player.h Demo player and utilities player.cpp Wave_Writer.h Wave sound file writer Wave_Writer.cpp sdl_player/ Use with demos to play and show output interactively player.cpp Demo player using SDL Audio_Scope.h Audio scope window Audio_Scope.cpp Sync_Audio.h Simple synchronous audio interface for SDL sound Sync_Audio.cpp
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