1–4", allowing the messages themselves to be easily translated for consumers in different languages: Message Code 1: Playback stopped—Shown when theatre- or hotel-distributed audio content is being played back on a consumer playback device. Message Code 2: Copying stopped—Shown when theatre- or hotel-distributed audio content is being recorded by a consumer recording device. Message Code 3: Audio muted—Shown when consumer-sold audio content is being played back from an optical disc, without the matching AACS key present at the centre of the disc. Message Code 4: Copying stopped—Shown when consumer-sold audio content is being recorded by a consumer recording device. Licensing For Cinavia the owners Verance make their money through licensing agreements with several sections of the entertainment and media industry. these licence costs due to Verance were $10,000–$300,000 per manufacturer of Blu-ray Disc players—for the rights to embed the Cinavia detection system—plus additional software costs for the implementation itself. Production facilities need to pay $50 for each audio track that is watermarked with Cinavia. Distribution houses must finally pay $0.04 per disc with Cinavia watermarked content included. Technical aspects Verance claims Cinavia has the following features: Only a single channel of audio is required to detect the watermark. The watermark is able to survive re-recording through a microphone. The watermark can be detected through "the production, duplication, distribution, broadcast, and consumer handling of recorded content". (In the white paper for their DVD-Audio Detector Compliance Verification Suite all tests are single-channel files.) Different copies of otherwise identical works can be distinguished. DVD-Audio The data throughput for a watermarking system used for DVD-Audio requirement is for "Watermark Output: 3 water-mark data bits per 15 seconds (2 CCI bits and 1 SDMI Trigger Bit)". The two CCI bits in the example contain Digital Copy Control Information, while the succession of SDMI bits contains Secure Digital Music Initiative data when reconstructed. Also in the Compliance Verification Suite the lowest sample rate test is at 16,000 samples per second with 16 bits per sample. This could indicate that the bandwidth requirements top out at 8 kHz. History On 5 June 2009, the licensing agreements for AACS were finalized, which were updated to make Cinavia detection on commercial Blu-ray Disc players a requirement. On 3 July 2009, Maxim Anisiutkin published an open source DVD Audio watermark detector and neutralizer computer program to the SourceForge web site. The software package contains a detailed description of the method