Audio signal compression
AssigneeKoninklijke Philips Electronics N.V.
InventorsDerk Reefman, Petrus Antonius Cornelis Maria Nuijten
Life of this patent
Estimating the term…
Abstract
Estimating a compression gain obtainable in compressing a given audio signal, comprising extracting a signal power in a selected frequency band of the given audio signal, and obtaining an estimation of the compression gain by correlation with the extracted signal power.
Claims11
A method of estimating a compression gain obtainable in compressing a given audio signal, the method comprising the steps of:
- extracting a signal power in a selected frequency band of the given audio signal, and
- obtaining an estimation of the compression gain by correlation with the extracted signal power.
A method of recording an audio signal on a recording medium, the method comprising the steps of:
- compressing the audio signal to obtain a compressed audio signal,
- recording the compressed audio signal on the recording medium,
- the method further comprising:
- estimating a compression gain obtainable in the compressing step by extracting a signal power in a selected frequency band of the audio signal, and obtaining an estimation of the compression gain by correlation with the extracted signal power,
- controlling said compressing depending on said estimated compression gain.
A method of transmitting an audio signal, the method comprising the steps of:
- compressing the audio signal to obtain a compressed audio signal,
- transmitting the compressed audio signal over a transmission medium,
- the method further comprising:
- estimating a compression gain obtainable in the compressing step by extracting a signal power in a selected frequency band of the audio signal, and obtaining an estimation of the compression gain by correlation with the extracted signal power,
- controlling said compressing depending on said estimated compression gain.
A device for estimating a compression gain obtainable in compressing a given audio signal, the device comprising:
- means for extracting a signal power in a selected frequency band of the given audio signal, and
- means for obtaining an estimation of the compression gain by correlation with the extracted signal power.
Dependencies are inferred from the claim text.