Sony United Kingdom Limited

Sony Corporation

Sony Europe Limited

Other

William Edmund Cranstoun Kentish

Peter Charles Eastty

Nicolas John Haynes

Peter Damien Thorpe

Rodney Hugh Densham

Christopher Michael McCulloch

Nicholas John Haynes

Audio processing apparatus in which a payload signal is inserted into a primary audio signal comprises a noise generator operable to generate a noise signal in dependence on the payload signal; a level detector for detecting a signal level of the primary signal; a modulator for respectively increasing or decreasing the level of the noise signal in response to an increase or a decrease of the detected signal level of the primary audio signal, to generate a modulated noise signal; a combiner for combining the primary signal and the modulated noise signal; and a signal delay arrangement; the modulator operating with respect to the signal delay arrangement so that a decrease in the level of the noise signal is time-advanced with respect to the corresponding decrease in the signal level of the primary audio signal.

Audio processing with time advanced inserted payload signal

An audio processing apparatus for processing two sampled audio signals to detect a temporal position of one of the audio signals with respect to the other. The apparatus detects audio power characteristics of each signal in respect of successive continuous temporal portions of each of the two signals, the portions having identical lengths and each portion including at least two audio samples, and correlates the detected audio power characteristics in respect of the two audio signals to establish a most likely temporal offset between the two audio signals.

Audio processing apparatus and method for processing two sampled audio signals to detect a temporal position

An original digital audio signal represents unimpaired audio information. The digital audio signal is compressed and encrypted without substantial impairment to produce a first audio signal. A second, unencrypted, audio signal is produced. The first and second audio signals are combined. Preferably the first audio signal is losslessy compressed. The second audio signal may be an impaired version of the original digital audio signal.

Processing digital data

A method of processing a spectrally-encoded digital audio signal comprising band data components representing audio contributions in respective frequency bands comprises the steps of altering a subset comprising one or more of the band data components; and generating recovery data to allow the original values of the altered band data components to be reconstructed.

Digital audio processing

Process for accurately timed automatic alteration of electrical signals stored on a signal carrier () during the transmission of the original signal to a signal receiver () in which process, for the exact dynamic alteration of the original signals, the original signals are first digitized and, provided with a time code, supplied to a computer () and stored in its memory unit, then the original signals digitally stored in the computer () are processed independently of the original recording in that the original signals digitally stored in the computer are graphically represented and checked for spots which are to be altered, and the correction signals corresponding to the desired alterations are selected and, provided with a time code, are entered in the computer () and then these correction signals are synchronously supplied to the setting members () during the transmission of the original signals from the signal carrier () to the signal receiver ().

Automation of signal processing apparatus

Signal processing apparatus is described in which at least two sets of automated signal processing functions are controlled by stored automation commands, at times dependent upon at least two respective timecode signals which may each be associated with a respective source signal supplied to the signal processing apparatus.

A processing apparatus includes a network of interconnected processors comprising a plurality of signal processors for digitally processing input signals in real time to generate output signals and one or more control processors, each control processor controlling the operation of a plurality of signal processors. The processing apparatus automatically schedules control tasks in a plurality of time slices, where more than one control processor is provided for coordination between control processors, a wired-OR configuration connection can be provided to synchronise the beginning and/or end of the time slices. A control processor can change an address field of microcode instructions of a signal processor for implementing a multiplexer function. A control delay list can be provided for scheduling control task delays. Control tasks can be allocated to more than one control processor, each control processor then communicating to the other control processors if it completes the task so that the other control processors may abandon further processing of the task. The invention finds particular application to an audio mixing console.

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Chipping Norton, United Kingdom

William Edmund Cranstoun Kentish