Patent ID: 7664633
Filing Date: 2010-02-16
Classification: G10L

Abstract:
1. A method of encoding an audio signal by an encoder device for providing the encoded audio signal to a decoder device, the method comprising the acts of: providing a respective set of sampled signal values for each of a plurality of sequential segments; analyzing the sampled signal values to determine one or more sinusoidal components for each of the plurality of sequential segments; linking sinusoidal components across a plurality of sequential segments to provide sinusoidal tracks; for each sinusoidal track, determining a phase by a phase unwrapper that exposes inter-frame phase behavior for a track, the phase comprising a substantially monotonically changing value; generating an encoded audio stream by a phase encoder device including sinusoidal codes representing said phase; and interrupting a track by signaling an end of the track, and starting a new track if a phase which will become available in the decoder device differs substantially from the phase present in the encoder device.