Frequency envelope vector quantization method and apparatus
US-2016111105-A1 · Apr 21, 2016 · US
Hybrid coded audio data streaming apparatus and method
US9059727B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9059727-B2 |
| Application number | US-201213463003-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 3, 2012 |
| Priority date | May 12, 2011 |
| Publication date | Jun 16, 2015 |
| Grant date | Jun 16, 2015 |
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Abstract
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An audio coding system in which a plurality of quantization methods are selectable for application to components of a streamed audio signal to achieve a target frame size that is determined by comparing an achieved bit rate against a target bit rate. Based on the target frame size, the system calculates a bit allocation for signal components and compares the bit allocation to the dynamic range of the signal components. Depending on the outcome of the comparison, the system may select to quantize or not quantize a signal component. The system employs lossless coding techniques, but is capable of introducing lossy coding by quantization in order to meet the target bit rate.
First claim
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The invention claimed is: 1. An audio encoder comprising a combination of hardware and software elements arranged to receive an input signal comprising a stream of un-encoded audio data samples and to produce an output signal comprising a stream of encoded audio data samples, the hardware and software elements being configured to arrange said audio data samples into a plurality of data frames, and to further arrange each frame into at least one slice, each slice comprising a respe…
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Electricity · mapped topic
Physics · mapped topic
Physics · mapped topic
- H03M7/3082Primary
Electricity · mapped topic
- G10L19/0208Primary
Physics · mapped topic
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- What does patent US9059727B2 cover?
- An audio coding system in which a plurality of quantization methods are selectable for application to components of a streamed audio signal to achieve a target frame size that is determined by comparing an achieved bit rate against a target bit rate. Based on the target frame size, the system calculates a bit allocation for signal components and compares the bit allocation to the dynamic range …
- Who is the assignee on this patent?
- Smyth Neil, Trainor David, Cambridge Silicon Radio Ltd
- What technology area does this patent fall under?
- Primary CPC classification H03M7/3082. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 16 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).