Method for coding and decoding impulse responses of audio signals
AssigneeThomson Licensing
InventorsJurgen Schmidt, Klaus Eilts-Grimm
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Abstract
The transmission and use of real, i. e. of measured, room impulse responses for the reproduction of sound signals with this room characteristic compatible to the MPEG-4 standard is made possible by inserting impulse responses in multiple successive control parameter fields, especially the params[128] array. A first control parameter field contains information about the number and content of the following fields. For presentation of the sound signals the content of the successive control parameter fields is separated, stored in an additional memory of a node and used during the calculation of the room characteristic.
Claims11
Method for coding impulse responses of audio signals, wherein said impulse responses allow the reproduction of sound signals corresponding to a certain room characteristic, comprising:
- generating an impulse response of a room for a sound source;
- and
- inserting parameters representing said generated impulse response into multiple successive control parameter fields, wherein a first control parameter field contains information about the number and content of the following control parameter fields.
Method for decoding impulse responses of audio signals, wherein said impulse responses allow the reproduction of sound signals corresponding to a certain room characteristic, comprising:
- separating parameters representing an impulse response from multiple successive control parameter fields, wherein a first control parameter field contains information about the number and content of the following control parameter fields;
- storing the separated parameters in an additional memory of a node;
- and
- using said stored parameters for the calculation of the room characteristic.
Dependencies are inferred from the claim text.