Abstract: Systems and techniques are provided for audio synchronization and delay estimation. Audio metadata including a first discrete Fourier transform representation may be received. An audio signal may be pre-processed. A second discrete Fourier transform representation may be generated from the pre-processed audio signal. A correlation result in a discrete Fourier transform representation may be generated based on an element-wise multiplication of the first and second discrete Fourier transform representations. An inverse Fourier transform may be performed on the correlation result in a discrete Fourier transform representation to generate a correlated signal including samples that may have a position and a value. A relative delay value may be determined based on the position of a sample having a value with the greatest magnitude. Playback of a second audio signal may be adjusted based on a current delay value adjusted based on the relative delay value.

Abstract: Systems and techniques are provided for audio synchronization and delay estimation. Audio metadata including a first discrete Fourier transform representation may be received. An audio signal may be pre-processed. A second discrete Fourier transform representation may be generated from the pre-processed audio signal. A correlation result in a discrete Fourier transform representation may be generated based on an element-wise multiplication of the first and second discrete Fourier transform representations. An inverse Fourier transform may be performed on the correlation result in a discrete Fourier transform representation to generate a correlated signal including samples that may have a position and a value. A relative delay value may be determined based on the position of a sample having a value with the greatest magnitude. Playback of a second audio signal may be adjusted based on a current delay value adjusted based on the relative delay value.

Abstract: Systems and techniques are provided for audio synchronization and delay estimation. Audio metadata including a first discrete Fourier transform representation may be received. An audio signal may be pre-processed. A second discrete Fourier transform representation may be generated from the pre-processed audio signal. A correlation result in a discrete Fourier transform representation may be generated based on an element-wise multiplication of the first and second discrete Fourier transform representations. An inverse Fourier transform may be performed on the correlation result in a discrete Fourier transform representation to generate a correlated signal including samples that may have a position and a value. A relative delay value may be determined based on the position of a sample having a value with the greatest magnitude. Playback of a second audio signal may be adjusted based on a current delay value adjusted based on the relative delay value.

Abstract: A method of presenting media is provided. The method comprises receiving, using a receiver, a first wireless signal comprising the media, the media comprising a video component and an audio component; storing at least a component of the media in a memory of a video playback device separate from the receiver; selectively playing back the video component of the media using the video playback device; and playing back the audio component of the media using the receiver such that playback of the audio and video components of the media are synchronised. An apparatus and system for presenting media are also provided.

Abstract: A method of authorising an audio download is provided. The method comprises: receiving, at a receiving device, a first wireless signal comprising authorisation data; requesting an audio download using the authorisation data; receiving a transmission comprising the audio download. An audio download system and an audio broadcast system are also provided.

Abstract: A method of synchronizing one or more wirelessly received audio signals with an acoustically received audio signal is provided. The method comprises: receiving an electromagnetic signal using a first wireless communication method, the electromagnetic signal comprising: the one or more wirelessly received audio signals and a wirelessly received metadata relating to a remote audio content, determining a delay between the acoustically received audio signal and the one or more wirelessly received audio signals by referring the acoustically received audio signal to the wirelessly received metadata; and delaying the one or more audio signals by the determined delay. A device and system for performing the method are also provided.

Abstract: An audio mixer is provided comprising: an audio receiver configured to receive an audio signal comprising a plurality of audio channels and a controller comprising one or more modules configured to: receive an audio content setting from a user interface device, adjust the relative volumes of the audio channels according to the audio content setting to provide a plurality of adjusted audio channels and combine the adjusted audio channels to generate a custom audio content.

Abstract: A method of augmenting an ambiently experienced audio content is provided, the method comprises recording an acoustic audio signal from the ambiently experienced audio content; receiving a wireless signal comprising a first audio signal and a second audio signal, the wireless signal received using a first wireless communication system, wherein the first audio signal comprises sound that is also audible within the ambiently experienced audio content and the second audio signal comprises sound that is substantially inaudible within the ambiently experienced audio content; comparing the first audio signal with the acoustic audio signal to determine a delay between the acoustic audio signal and the first audio signal; delaying the second audio signal by the determined delay; and reproducing the delayed second audio signal at an audible volume, such that it is substantially synchronized with the ambiently experienced audio content.

Abstract: A method of augmenting an ambiently experienced audio content is provided, the method comprises recording an acoustic audio signal from the ambiently experienced audio content; receiving a wireless signal comprising a first audio signal and a second audio signal, the wireless signal received using a first wireless communication system, wherein the first audio signal comprises sound that is also audible within the ambiently experienced audio content and the second audio signal comprises sound that is substantially inaudible within the ambiently experienced audio content; comparing the first audio signal with the acoustic audio signal to determine a delay between the acoustic audio signal and the first audio signal; delaying the second audio signal by the determined delay; and reproducing the delayed second audio signal at an audible volume, such that it is substantially synchronised with the ambiently experienced audio content.

Abstract: An audio mixer is provided comprising: an audio receiver configured to receive an audio signal comprising a plurality of audio channels and a controller comprising one or more modules configured to: receive an audio content setting from a user interface device, adjust the relative volumes of the audio channels according to the audio content setting to provide a plurality of adjusted audio channels and combine the adjusted audio channels to generate a custom audio content.

Abstract: A method of synchronising one or more wirelessly received audio signals with an acoustically received audio signal is provided. The method comprises: receiving an electromagnetic signal using a first wireless communication method, the electromagnetic signal comprising: the one or more wirelessly received audio signals and a wirelessly received metadata relating to a remote audio content, determining a delay between the acoustically received audio signal and the one or more wirelessly received audio signals by referring the acoustically received audio signal to the wirelessly received metadata; and delaying the one or more audio signals by the determined delay. A device and system for performing the method are also provided.

Abstract: The presently disclosed subject matter relates to Managed Ecosystem Fermentation (MEF) which is a continuous microbial process utilizing a managed ecosystem approach employing dozens to thousands of species of microorganisms, occurring in a controlled artificial environment and consuming organic materials without benefit of sterilization. The process of utilizing this fermentation for the consumption of organic materials on a continuous basis is within the scope of this disclosed subject matter. The process of separating chemicals as industrial chemicals from this fermentation on a continuous basis is within the scope of this disclosed subject matter. The process of separating biomass useful as high protein animal feed or fertilizer from this fermentation on a continuous (or semi-continuous) basis is within the scope of this disclosed subject matter.

Abstract: The presently disclosed subject matter relates to Managed Ecosystem Fermentation (MEF) which is a continuous microbial process utilizing a managed ecosystem approach employing dozens to thousands of species of microorganisms, occurring in a controlled artificial environment and consuming organic materials without benefit of sterilization. The process of utilizing this fermentation for the consumption of organic materials on a continuous basis is within the scope of this disclosed subject matter. The process of separating chemicals as industrial chemicals from this fermentation on a continuous basis is within the scope of this disclosed subject matter. The process of separating biomass useful as high protein animal feed or fertilizer from this fermentation on a continuous (or semi-continuous) basis is within the scope of this disclosed subject matter.

Abstract: The presently disclosed subject matter relates to Managed Ecosystem Fermentation (MEF) which is a continuous microbial process utilizing a managed ecosystem approach employing dozens to thousands of species of microorganisms, occurring in a controlled artificial environment and consuming organic materials without benefit of sterilization. The process of utilizing this fermentation for the consumption of organic materials on a continuous basis is within the scope of this disclosed subject matter. The process of separating chemicals as industrial chemicals from this fermentation on a continuous basis is within the scope of this disclosed subject matter. The process of separating biomass useful as high protein animal feed or fertilizer from this fermentation on a continuous (or semi-continuous) basis is within the scope of this disclosed subject matter.

Abstract: The presently disclosed subject matter relates to Managed Ecosystem Fermentation (MEF) which is a continuous microbial process utilizing a managed ecosystem approach employing dozens to thousands of species of microorganisms, occurring in a controlled artificial environment and consuming organic materials without benefit of sterilization. The process of utilizing this fermentation for the consumption of organic materials on a continuous basis is within the scope of this disclosed subject matter. The process of separating chemicals as industrial chemicals from this fermentation on a continuous basis is within the scope of this disclosed subject matter. The process of separating biomass useful as high protein animal feed or fertilizer from this fermentation on a continuous (or semi-continuous) basis is within the scope of this disclosed subject matter.

Abstract: A computer system buys and sells virtual shares on behalf of investors, usually investing small sums, in order to reduce the dealing costs for small transactions. The system thus maintains a notional level of shares held on behalf of all the investors who participate in the system. A monitoring process runs continually checking exposure on individual shares, and the system buys and sells blocks of real shares in the market to keep the exposure to individual companies at an acceptable level. By buying and selling larger blocks of real shares on a more infrequent basis than the virtual share transactions, the smaller transactions are effectively consolidated together, with associated cost savings.