This is the generic class for apparatus and correspondingmethods for constructing, analyzing, and modifying units of human language by data processing, in which thereis a significant change in the data.
This class also provides for systems or methods that process speech signals for storage, transmission,recognition, or synthesis of speech.
This class also provides for systems or methods for bandwidthcompression or expansion of an audio signal, or for time compressionor expansion of an audio signal.
Class 704 is structured into three main divisions:
B. Speech Signal Processing.
C. Audio Compression.
See Subclass References to the Current Class, below, for thesubclasses located within each of these three main divisions.