METHOD AND SYSTEM FOR AUDIO FRAME ESTIMATION
First Claim
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1. A system for audio frame estimation, wherein the system comprises:
- an audio processor for receiving and decoding a plurality audio frames, wherein the audio processor determines the quality of audio frames;
a transform circuit for generating a first frequency domain signal according to a first audio frame, wherein the first audio frame has a suitable quality;
a frequency domain estimation circuit for estimating a second frequency domain signal according to the first frequency domain signal; and
an inverse transform circuit for generating a replacement frame that replaces a second audio frame, wherein the second audio frame has an unsuitable quality.
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Abstract
The disclosed systems and methods relate to estimating an audio frame. Aspects of the present invention may improve audio quality at the client side when a section of voice data is corrupted or delayed during transmission. The present invention may be suitable for decoding in, for example, circuit switched and packet switched digital voice applications.
25 Citations
22 Claims
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1. A system for audio frame estimation, wherein the system comprises:
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an audio processor for receiving and decoding a plurality audio frames, wherein the audio processor determines the quality of audio frames; a transform circuit for generating a first frequency domain signal according to a first audio frame, wherein the first audio frame has a suitable quality; a frequency domain estimation circuit for estimating a second frequency domain signal according to the first frequency domain signal; and an inverse transform circuit for generating a replacement frame that replaces a second audio frame, wherein the second audio frame has an unsuitable quality. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for audio frame estimation, wherein the method comprises:
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generating a first frequency domain signal according to a first audio frame, wherein the first audio frame has a suitable quality; estimating a second frequency domain signal according to the first frequency domain signal; and generating a replacement frame to replace a second audio frame, wherein the second audio frame has an unsuitable quality. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification