Free Music Digitized Voice Libraries

OpenAL: Open Source Audio Library OpenAL, the Open Audio Library, purports to be a "joint effort to create an open, vendor-neutral, cross-platform API for interactive, primarily spatialized audio." Members include Creative Labs and Loki Entertainment Software. Open Source Audio Library Project The Open Source Audio Library Project is a library with a set of C++ classes that handles audio functions. It is multiplatform. It currently supports the MP3, WAV, au, aiff, aifc (etc) formats. It also has several worker classes: audio sample rate converter, audio pitch change, audio test source, audio editing, audio timer recording, audio VU meter and spectrum display, audio mixing, reading and writing audio data to devices or files. Source code is available, and the project is in the initial stages. VDMSound This item should probably not be listed on this page since it's not a programming library or the like. However, if you develop or maintain DOS games that need to run in a DOS box on Windows NT, 2000, XP, you might find this soundcard emulator useful. It emulates an MPU-401 interface (for MIDI), a SoundBlaster compatible soundcard (SB16, SBPro 2, SB2, SBPro, etc) and a standard game-port. The beauty of this emulator is that independent of the user's audio hardware; it works with any soundcard and even on systems that do not have a soundcard. The emulator is free, released under the GNU General Public License and comes with source code. TurboPower Async Professional If you need to add speech to your programs, or enable it to process speech input, TurboPower's Async Professional provides you an easy access to Microsoft's Speech API (SAPI) allowing you to integrate voice/speech recognition and speech synthesis in your programs. It also handles the sending and receiving (as well as viewing and printing) of faxes (and converts BMP, DCX, PCX and TIF files automatically), alphanumeric and text (GSM/SMS) paging, high speed file transfers (including the major file transfer protocols like Zmodem and FTP), IP telephony (audio and video, Voice Over IP or VOIP), Internet communications (Winsock access), supports ISDN modems, RS-232 and RS-485 standards, and includes an XML-based modem database. And so on. Like most of the TurboPower tools, this open source toolkit may be used with Delphi and Borland C++ Builder and ActiveX environments like Microsoft Visual C++ and Visual Basic. TMidiGen This Delphi and C++ Builder component allows you to create MIDI sound effects and note sequences in your programs. It generates the MIDI data in memory, and thus does not require external files or resources. It has 175 instruments, Advanced Pitch Blend, Modulation, Sustain, Chorus, Reverb effects, volume and pan adjustments, etc. It appears to be free (although the website makes no mention of the licence under which it is released; let me know if you have information about this). TToneGen TToneGen is a Delphi and C++ Builder component that lets your application create waveform sound effects. It generates the WAV waveforms in memory. It supports amplitude modulation, full AHDSR envelope shaping to alter the dynamics of the selected waveform, handles a frequency range from 20Hz to 20kHz, etc. It appears to be free (although the website makes no mention of the licence under which it is released; let me know if you have information about this). PortAudio This is an open source cross-platform audio I/O library. Using this library purportedly allows your sound source code to be portable across Windows, Macintosh, Unix (OSS), SGI and BeOS. The API allows you to record and play sound. Linux support is currently in BETA. libsndfile This is a C library that allows you to read and write sampled sound such as using the Windows WAV format, the Apple/SGI AIFF format, Dec AU format, RAW headerless PCM files, etc. It is released under the GNU Lesser General Public License. The library can be compiled and used on Windows, Linux, Macintosh, and "just about any Unix".