Patent ID: 9424853
Filing Date: 2016-08-23
CPC Classification: G10L,H03M,H04H,H04N,H04S

Claim Text:
1. An apparatus for processing an audio signal, comprising: a fingerprint calculator that calculates a fingerprint per block of the audio signal for a sequence of subsequent blocks in order to acquire a sequence of reference audio signal fingerprint information, wherein the fingerprint calculator is implemented to use predetermined block division information for calculating the sequence of reference audio signal fingerprint information, or to store used block division information in association with the audio signal; a fingerprint information embedder that associates the reference audio signal fingerprint information with the multichannel extension data, wherein the multichannel extension data are implemented such that an approximation of a multichannel audio signal can be determined with a block of the multichannel extension data together with a block of the audio signal, wherein the fingerprint information embedder is implemented to embed the reference fingerprint information for the block of the audio signal into the block of the multichannel extension data or to insert it into an output signal in association with the block of multichannel extension data; and an output interface that outputs the output signal; wherein the audio signal does not comprise the block division information and the fingerprint calculator is implemented to provide the block division information to a block division information embedder, such that the block division information embedder embeds the block division information into the audio signal; and wherein the output interface is further implemented to output the audio signal with the embedded block division information.