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Method, device and system for testing consistency of DRA

A test method and test device technology, applied in speech analysis, instruments, etc., can solve the problems of not giving DRA audio conformance test method information and enlightenment, and achieve the effect of high-efficiency conformance test

Inactive Publication Date: 2009-11-11
数维科技(北京)有限公司
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Problems solved by technology

Although the above output document discusses and expounds the conformance test method of MPEG audio signal in detail, it does not give any information and enlightenment about the conformance test method of DRA audio

Method used

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  • Method, device and system for testing consistency of DRA
  • Method, device and system for testing consistency of DRA
  • Method, device and system for testing consistency of DRA

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Embodiment Construction

[0023] [023] Preferred embodiments of the present invention will be described hereinafter by means of the accompanying drawings. In the following description, functions or constructions that have become prior art will not be described in detail since they would obscure the description of the present invention in unnecessary detail.

[0024] [024] A typical DRA audio encoder is shown in FIG. 1, which may be implemented by hardware, software, and / or firmware. In short, the technology involved in the DRA standard is to perform signal processing on the source sound (for example, input PCM samples) with multiple technical modules, so as to achieve the purpose of almost lossless compression of the source sound. The above technical modules include but are not limited to: transient analysis module 20, multi-resolution filter bank module 22, linear scalar quantization module 30, quantization index encoding module 32, codebook selection module 34, human auditory model module 40, A glob...

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Abstract

The invention relates to a method for testing consistency of DRA. The method comprises the following steps of: sending a plurality of test code streams to a standard DRA decoder used as a DRA standard decoder and a to-be tested DAR decoder orderly and respectively to generate a plurality of first processing signals and second processing signals; based on the plurality of first processing signals and second processing signals, working out at least one statistical measurement; and by comparing the at least one statistical measurement with at least one preset threshold value corresponding to the at least one statistical measurement, determining whether the to-be-tested DRA decoder is qualified. Based on the technical proposal, the consistency of the DRA audio frequency is tested in high efficiency. Moreover, the invention also discloses a device and a system for testing the consistency of DRA.

Description

technical field [0001] [001] The present invention relates to a conformance testing method and device, and more particularly, relates to a conformance testing method and device for DRA audio signals. Background technique [0002] [002] As we all know, due to manufacturing accuracy, non-ideal environment and other reasons, hardware products made according to certain technical specifications may have certain errors relative to the original technical specifications under ideal conditions. In response to the above problems, a method called "consistency testing" has been proposed to give the following judgment results relatively objectively: products manufactured according to certain technical specifications, or even a complete set of equipment composed of multiple above-mentioned products , how much error exists relative to the original technical specification under ideal conditions, and whether the error meets the requirements of the relevant error in the technical specificatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/00G10L25/03
Inventor 张尉雄郑楚升张景平张培
Owner 数维科技(北京)有限公司
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