The dywapitchtrack library computes the pitch of an audio stream in realtime. The pitch is the main frequency of the waveform (the "note" being played or sung). It is expressed as a float in Hz. dywapitchtrack is based on a custom-tailored algorithm which is of very high quality, very accurate (precision < 0.05 semitones), with very low latency (< 23 ms) and very low error rates. It has been thoroughly tested on the human voice.
AudioScout is a distributed audio content indexing system. It can index a large collection of audio content for the purpose of later recognition of unknown signals. Robust to noise, different encodings, and other types of distortion, it can be used for a variety of applications including duplicate detection of files, identifying music, as well as more sophisticated uses involving the enforcement of copyrights and ensuring lawful use of content.
The Ultimate Live Music Audio Converter is an audio conversion tool specifically designed around the file formats used for live music trading. It currently supports conversion of SHN, FLAC, and WAV files to MP3 or Ogg. Advanced features include automatic tagging of files using the contents of a set-list file (MP3, Ogg, and FLAC only), upload of new files into Itunes Library, and scanning directories where new files are downloaded (manual or automatic).
Derrick is a simple tool for recording data streams of TCP and UDP traffic. It shares similarities with other network recorders, such as tcpflow and wireshark, though it is more advanced than the first and clearly inferior to the latter. It has been specifically designed to monitor application-layer communication. In contrast to other tools, the application data is logged in a line-based ASCII format. Common Unix tools, such as grep, sed, and awk, can be directly applied. Even replay of recorded communication is straightforward using netcat. Derrick supports on-the-fly compression and rotation of log files.
RSound is a simplistic and lightweight framework for networked TCP/IP audio. It is designed to be very simple to implement, and to work well with music and video players. A librsound is supplied. It is not designed for low latency audio (games), and lets the sound backend take care of sound mixing. It supports POSIX-compliant systems (including cygwin). It includes audio output support for ALSA, OSS, libao, and PortAudio.
DaisyDuck provides the ability to playback Daisy 2.02 online books and local books (reachable directly on a physical media). The interface is simplified for quick handling, even for people with a handicap like partially sighted persons. Intuitive keyboard shortcuts provide an easy way to access the functionalities of the application and to navigate within books (by chapter and by paragraph). DaisyDuck automatically saves the position where the playback of a book was interrupted. Then, when this book is reloaded, the playback begins at the last position without any action of the listener.