Crowd noise audio process and apparatus
AssigneeSony Computer Entertainment Europe Limited
InventorBenjamin Fawcett
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Abstract
An audio apparatus is suitable for generating crowd sounds from an audio signal is disclosed in which the apparatus comprises modulation means operable to modulate a noise signal in response to the audio signal to generate a modulated noise signal, and diffusion delay means. The diffusion delay means is operable to apply a series of two or more delay operations, the input signal to a first such delay operation in the series being the modulated noise signal, and input to each subsequent delay operation in the series being the output signal generated by a preceding delay operation. Each delay operation comprises modifying that operation's input signal by the addition of a delayed version of that operation's input signal.
Claims24
An audio apparatus for generating crowd sounds from an audio signal, the apparatus comprising:
- a modulator operable to modulate a noise signal in response to the audio signal to generate a modulated noise signal;
- and
- a diffusion delay arrangement;
- in which:
- the diffusion delay arrangement is operable to apply a series of two or more delay operations, an input signal to a first such delay operation in the series of two or more delay operations being the modulated noise signal, an input to each subsequent delay operation in the series of two or more delay operations being an output signal generated by a preceding delay operation;
- each delay operation comprising modifying that operation's input signal by the addition of one delayed version of that operation's input signal and outputting a result, the result comprising that operation's input signal overlaid with the one delayed version of that operation's input signal.
A method of audio processing for generating crowd sounds from an audio signal, the method comprising the steps of:
- modulating a noise signal in response to an audio signal to generate a modulated noise signal, and;
- applying a series of two or more delay operations, an input signal to a first such delay operation in the series of two or more delay operations being the modulated noise signal, an input to each subsequent delay operation in the series of two or more delay operations being an output signal generated by a preceding delay operation, and in which:
- each delay operation comprises modifying that operation's input signal by the addition of one delayed version of that operation's input signal and outputting a result, the result comprising that operation's input signal overlaid with the one delayed version of that operation's input signal.
Dependencies are inferred from the claim text.