v0.4.0

• A brand new API, based on streaming. (The old API has been removed). Improvements due to the new API include:
  • Reduced memory consumption, due to not having to load the entire file into memory. In practice, this allows the gem to read/write files that previously would have been prohibitively large.
  • Better performance for large files, for the same reason as above.
  • Ability to progressively append data to the end of a file, instead of writing the entire file at once.
  • Ability to easily read and write data in an arbitrary format, regardless of the file's native format. For example, you can transparently read data out of a 16-bit stereo file as 8-bit mono.
  • Automatic file management, similar to how IO.open() works.
• Ability to query format metadata of files without opening them, even for formats that this gem can't read or write.
• Support for reading and writing 32-bit PCM files.
• No longer supported: Reading PCM data as floating point and writing floating point as PCM.

v0.3.0

• New method bits_per_sample=(). Allows converting a file from 8-bit to 16-bit and vice-versa.
• New method num_channels=(). Allows converting a mono file to stereo, and vice-versa.
• New method sample_rate=(). Allows changing the sample rate of a file.
• New method duration(). Returns a hash listing the playback time of the file.
• New method inspect(). Returns a pretty-printed string listing metadata about the file.
• More descriptive error messages are displayed when a file with an invalid format can't be opened.
• Files that have more than just a format and data chunk can now be opened.

v0.2.1

• Fixed bug which prevented stereo files from being opened, due to refactoring gone bad.

v0.2.0

• Added support for properly reading and writing stereo files. Files with more than 2 channels (such as surround sound) are supported as well.
• Added convenience methods mono?() and stereo?().
• Can now pass :mono and :stereo into the num_channels argument of the constructor, to allow for more readable code.
• Added method reverse().
• Conversion of raw samples to normalized samples, and vice versa, is more accurate.

v0.1.0

Initial release