Impulse search method and apparatus
A search method and pulse position technology, applied in electrical components, speech analysis, instruments, etc., can solve problems such as large computational complexity, and achieve the effect of reducing computational complexity and the number of pulse searches.
Active Publication Date: 2012-01-25
HUAWEI TECH CO LTD
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Problems solved by technology
[0006] The above-mentioned audio pulse search method has disadvantages: the computational complexity in the process of audio pulse search is relatively large at various bit rates
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[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0022] The pulse search method provided by the embodiment of the present invention includes: determining the number of pulse tracks and the number of pulses on the pulse track, searching for the pulse position in the current pulse track, and then searching for the pulse position in the next pulse track.
[0023] The pulse search device provided by the embodiment of the present invention includes a connected pulse selection unit and a comparator;
[0024] Wherein, the pulse selection unit is used to determine the pulse position in the current pulse track according to the predicted pulse position information, pulse track information, pulse quantity and the pulse search unit set for the pulse track, and the determined pulse position information Send to the comparator; also continue to determine the position of the pulse whose position has not be...
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The embodiment of the invention discloses a pulse searching method. Steps of the method comprises determining the number of pulse tracks and pulses on the pulse tracks, searching the pulse position of the current pulse track, and then searching the pulse position of next pulse track. The embodiment of the invention additionally discloses pulse searching position comprising a pulse selecting unit and a comparator, wherein the pulse selecting unit is used to determining the pulse position of the current pulse track and send the determined pulse position information to the comparator, additionally, the pulse selecting unit continuously determines the position of the pulses which are not positioned or finishes the operation of determining pulse position according to the comparative result from the comparator, the comparator is used to compare the number relations of the number of the pulses which are not positioned and are treated currently in the pulse track and the pulse searching units, and the comparative result is sent to the pulse selecting unit. The pulse searching method and the device disclosed by the embodiment of the invention can uniformly decrease the calculation complexity in the process of pulse searching.
Description
technical field [0001] The invention relates to the communication field, in particular to a pulse search method and device. Background technique [0002] In the process of audio communication, in order to ensure that the receiving end can successfully reconstruct the audio signal, it is necessary to determine the position of the audio pulse in the audio signal at the sending end, and further encode the audio pulse at the corresponding position and other subsequent transmission processing ; After receiving the audio pulse, the receiving end decodes the audio pulse at the position corresponding to the sending end to obtain a reconstructed audio signal. The above method of determining the position of the tone pulse is generally called the tone pulse search method. [0003] Among the currently applied audio pulse search methods, the audio pulse search method in AMR_WB+ is very representative. This method is cited from the invention patent with the patent application number 9619...
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IPC IPC(8): G10L19/10G10L19/00H03M7/30
Inventor 张德军王庭红李立雄张亮马付伟
Owner HUAWEI TECH CO LTD