METHOD AND APPARATUS TO ENCODE AND/OR DECODE AUDIO AND/OR SPEECH SIGNAL
First Claim
Patent Images
1. A method of encoding a signal, comprising:
- transforming an input signal into at least one domain;
determining a domain to be encoded using the input signal or the transformed signal in predetermined units; and
encoding signals allocated to the units in the determined domain.
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Abstract
A method and apparatus to encode and/or decode a speech signal and/or an audio signal. The apparatus includes a first domain transforming unit, a frequency domain encoding unit, and a multiplexing unit to encode the speech signal and/or an audio signal. The apparatus includes a demultiplexing unit, a frequency domain decoding unit, and a second domain inverse transformation unit to decode the speech signal and/or the audio signal. The method and apparatus are capable of effectively encoding or decoding all of a speech signal, an audio signal, and a mixed signal of a speech signal and an audio signal, and improving the quality of sound by using a small number of bits.
65 Citations
28 Claims
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1. A method of encoding a signal, comprising:
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transforming an input signal into at least one domain; determining a domain to be encoded using the input signal or the transformed signal in predetermined units; and encoding signals allocated to the units in the determined domain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of encoding a signal, comprising:
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determining one or more domains in which an input signal is to be encoded in predetermined units; and transforming signals allocated to the predetermined respective units into the determined domains, and then encoding the transformed signals. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method of decoding a signal, comprising:
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determining a plurality of domains in which signals for predetermined units have been respectively encoded; respectively decoding the signals in the determined domains; and restoring the original signal by mixing the decoded signals together. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. An apparatus to encode a signal, comprising:
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a transforming unit to transform an input signal into at least one domain and to determine a domain to be encoded using the input signal or the transformed signal in predetermined units; and an encoding unit to encode signals allocated to the units in the determined domain.
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27. An apparatus to decode a signal, comprising:
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a demultiplexing unit to determine a plurality of domains in which signals for predetermined units have been respectively encoded; and a decoding unit to respectively decode the signals in the determined domains; and a transforming unit to restore the original signal by mixing the decoded signals together.
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28. An apparatus to encode and/or decode a signal, comprising:
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an encoder to transform an input signal into at least one domain and to determine a domain to be encoded using the input signal or the transformed signal in predetermined units, and to encode signals allocated to the units in the determined domains; and a decoder to determine the determined domain in which the encoded signals are allocated, to respectively decode the signals in the determined domains, and to restore the input signal by mixing the decoded signals together.
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Specification