CN101090273A - Independent 16-channel audio code decode algorithm - Google Patents
Independent 16-channel audio code decode algorithm Download PDFInfo
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- CN101090273A CN101090273A CNA2006100872087A CN200610087208A CN101090273A CN 101090273 A CN101090273 A CN 101090273A CN A2006100872087 A CNA2006100872087 A CN A2006100872087A CN 200610087208 A CN200610087208 A CN 200610087208A CN 101090273 A CN101090273 A CN 101090273A
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Abstract
This invention discloses an independent audio coding method for 16 channels, which selects basic coding channel numbers according to the numbers of input digital audio signals, sets a coding parameter for each channel, selects additive channel numbers and sets attribute to them, carries out independent coding to the digital audio signal of each basic coding channel, carries out independent coding or associated coding to each additive channel to output data of coding compression, in which, the number of the basic coding channels is less than that of the input digital audio signals, the coding parameter expresses a method applying harmful or harmless compression, the band uses full band or sub-band( 10Hz-24KHz), the compressed data rate and additive channel attribute shows if the channel is the assistant audio of a channel, the reference audio input source is the current audio channel or an extra one and its associated coding is done to the sub-band coding of its associated channel or compression coding.
Description
Technical field
The present invention relates to a kind of 16 channel audio information compressing methods, also relate to the coding/decoding method of this compressed encoding of decompress(ion).
Background technology
Existing audio compression method, can compress processing with interior audio frequency to 8 the tunnel, development along with environment space, need more port number could support better sound field effect, more in addition passage can be supported the reinforcement of existing voice-grade channel effect, because each audio amplifier power is limited, by handling the more multitone case to allow in the space expressive force is more accurately arranged, rather than arrange that simply a plurality of audio amplifiers export same group of signal, between the position of audio amplifier and each signal operation relation certain pattern is arranged, so there is more passage various needs flexibly such as can satisfy from the high-fidelity to the reinforced effects.
Summary of the invention
The present invention has overcome the shortcoming of prior art, and a kind of independent 16-channel audio coding method is provided, and may further comprise the steps:
(1) according to the port number of input digital audio signal, selects the basic coding number of channels;
(2) coding parameter of each paths is set, selects additional channel quantity, the additional channel attribute is set;
(3) digital audio and video signals of each this coding pass of roadbed is encoded separately, each road additional channel is encoded separately or related coding;
(4) data of output encoder compression.
Wherein, the basic coding number of channels is smaller or equal to the port number of input digital audio signal;
Coding parameter presentation code method adopts and diminishes or harmless compression method, and frequency band adopts full range band (10HZ-24KHZ) or subband (part of full range band), and the data bit rate after the compression;
Whether this additional channel of additional channel attribute representation is the auxiliary audio frequency of certain or some passages, reference audio input source and related coding method, the audio frequency input source can be existing voice-grade channel or extra additional input audio frequency, and related coding method is carried out compressed encoding after the comprehensive calculation process for the sub-band coding of certain channel audio or to audio frequency input source signal.
Described independent 16-channel audio coding method is characterized in that, when the channel digital audio signal of input was counted less than 16 passages, remaining passage can be used for the sub-band coding of other channel audio signal.
Can compensate and strengthen because the high frequency or the low frequency signal of certain lossy coding method loss also can improve compression ratio by distributing different sub-band by sub-band coding.
Described independent 16-channel audio coding method is characterized in that, additional channel generates new audio signal by handling the audio frequency of original one or more passages, can strengthen audio frequency effect.
Described independent 16-channel audio coding method is characterized in that, additional channel is by handling additional audio signal, the audio frequency of original one or more passages that are used for being added to.
Described independent 16-channel audio coding method, it is characterized in that, when the channel digital audio signal number of input is 16 passages, the definition of 16 passages is respectively: center channels (being called for short mid-), mid-L channel (being called for short a mid-left side), mid-R channel (being called for short the mid-right side), supper bass sound channel (abbreviation supper bass), preposition L channel (abbreviation L channel), preposition R channel (abbreviation R channel), sound channel (being called for short a left side strengthens) is strengthened on a left side, preposition sound channel (being called for short left front) is strengthened on a left side, and rearmounted sound channel (being called for short left back) is strengthened on a left side, the right sound channel (being called for short right the reinforcement) of strengthening, the right preposition sound channel (being called for short right front) of strengthening, the right rearmounted sound channel (being called for short right back) of strengthening, left surround channel (be called for short a left side around), a left side is around strengthening sound channel (being called for short a left side around reinforcement), right surround channel (be called for short right around), right around strengthening sound channel (being called for short right) around strengthening.
Described independent 16-channel audio coding method is characterized in that, can realize monophony, dual track, triple-track, and the like up to 16 sound channels, this 16 kinds of autonomous channel patterns, and stereo, 2.1 sound channels, 5.1 sound channel, 7.1 sound channels, 9.1 sound channels, 11.1 sound channels and 7 kinds of association modes of 15.1 sound channels.
Wherein 2.1 sound channels are for simulating L channel, R channel and the supper bass of surrounding effect;
5.1 sound channel be mid-, L channel, R channel, a left side around, right around and supper bass;
7.1 sound channel be mid-, a mid-left side, the mid-right side, L channel, R channel, a left side around, right around and supper bass;
9.1 sound channel be mid-, a mid-left side, the mid-right side, L channel, R channel, a left side around a, left side around strengthen, right around, right around strengthening and supper bass;
11.1 sound channel is mid-, a mid-left side, the mid-right side, L channel, R channel, a left side to be strengthened, rightly strengthen, a left side around a, left side around strengthen, right around, right around strengthening and supper bass;
15.1 sound channel for strengthen for mid-, a mid-left side, the mid-right side, L channel, R channel, a left side, left frontly, left back, right strengthen, right front, right back a, left side around a, left side around strengthen, right around, right around strengthening and supper bass;
Described independent 16-channel audio coding method is characterized in that, can describe each passage produces the audio signal can be used for offsetting interference signal according to the environment needs rule in the encoding compression data of generation.
Described independent 16-channel audio coding method is characterized in that, can describe each passage is modulated into the audio signal of orientable propagation according to the environment needs rule in the encoding compression data of generation.
Independent 16-channel audio coding/decoding method as previously described comes out to be reduced into audio signal with the data decompression of encoding compression, and according to the requirement of coded data, carries out directed modulation or generate the compensating audio signal that de-noising is used.
Description of drawings
Fig. 1 represents the present invention's each sound channel position assumption diagram under 15.1 sound channel application models.
Embodiment
Embodiment 1 (16 passage high-fidelity digital power amplifier)
16 passage high-fidelity digital power amplifiers of the present invention are core with described independent 16-channel audio code decode algorithm, make can accomplish perfect the reproduction for the audio frequency that possesses independent 16 sound channels, and especially the encoding compression data are to adopt lossless compression method to handle.For the audio frequency that does not have independent 16 sound channels, can concern according to the position, comprehensive relevant sound channel generates the different channel signals of suitable diverse location, make audio frequency effect desirable more, in addition for the space of imperfect environment, the signal that can make some passage output de-noising is offset and is disturbed, and promotes effect.
Claims (9)
1, a kind of independent 16-channel audio coding method may further comprise the steps:
(1) according to the port number of input digital audio signal, selects the basic coding number of channels;
(2) coding parameter of each paths is set, selects additional channel quantity, the additional channel attribute is set;
(3) digital audio and video signals of each this coding pass of roadbed is encoded separately, each road additional channel is encoded separately or related coding;
(4) data of output encoder compression.
Wherein, the basic coding number of channels is smaller or equal to the port number of input digital audio signal;
Coding parameter presentation code method adopts and diminishes or harmless compression method, and frequency band adopts full range band (10HZ-24KHZ) or subband (part of full range band), and the data bit rate after the compression;
Whether this additional channel of additional channel attribute representation is the auxiliary audio frequency of certain or some passages, reference audio input source and related coding method, the audio frequency input source can be existing voice-grade channel or extra additional input audio frequency, and related coding method is carried out compressed encoding after the comprehensive calculation process for the sub-band coding of certain channel audio or to audio frequency input source signal.
According to the independent 16-channel audio coding method described in the claim 1, it is characterized in that 2, when the channel digital audio signal of input was counted less than 16 passages, remaining passage can be used for the sub-band coding of other channel audio signal.
According to the independent 16-channel audio coding method described in the claim 1, it is characterized in that 3, additional channel generates new audio signal by handling the audio frequency of original one or more passages, can strengthen audio frequency effect.
According to the independent 16-channel audio coding method described in the claim 1, it is characterized in that 4, additional channel is by handling additional audio signal, the audio frequency of original one or more passages that are used for being added to.
5, according to the independent 16-channel audio coding method described in the claim 1, it is characterized in that, when the channel digital audio signal number of input is 16 passages, the definition of 16 passages is respectively: center channels (being called for short mid-), mid-L channel (being called for short a mid-left side), mid-R channel (being called for short the mid-right side), supper bass sound channel (abbreviation supper bass), preposition L channel (abbreviation L channel), preposition R channel (abbreviation R channel), sound channel (being called for short a left side strengthens) is strengthened on a left side, preposition sound channel (being called for short left front) is strengthened on a left side, and rearmounted sound channel (being called for short left back) is strengthened on a left side, the right sound channel (being called for short right the reinforcement) of strengthening, the right preposition sound channel (being called for short right front) of strengthening, the right rearmounted sound channel (being called for short right back) of strengthening, left surround channel (be called for short a left side around), a left side is around strengthening sound channel (being called for short a left side around reinforcement), right surround channel (be called for short right around), right around strengthening sound channel (being called for short right) around strengthening.
6, according to the independent 16-channel audio coding method described in the claim 1, it is characterized in that, can realize monophony, dual track, triple-track, and the like up to 16 sound channels, these 16 kinds of autonomous channel patterns, and it is stereo, 2.1 sound channel, 5.1 sound channels, 7.1 sound channels, 9.1 sound channel, 11.1 sound channels and 7 kinds of association modes of 15.1 sound channels.
Wherein 2.1 sound channels are for simulating L channel, R channel and the supper bass of surrounding effect;
5.1 sound channel be mid-, L channel, R channel, a left side around, right around and supper bass;
7.1 sound channel be mid-, a mid-left side, the mid-right side, L channel, R channel, a left side around, right around and supper bass;
9.1 sound channel be mid-, a mid-left side, the mid-right side, L channel, R channel, a left side around a, left side around strengthen, right around, right around strengthening and supper bass;
11.1 sound channel is mid-, a mid-left side, the mid-right side, L channel, R channel, a left side to be strengthened, rightly strengthen, a left side around a, left side around strengthen, right around, right around strengthening and supper bass;
15.1 sound channel for strengthen for mid-, a mid-left side, the mid-right side, L channel, R channel, a left side, left frontly, left back, right strengthen, right front, right back a, left side around a, left side around strengthen, right around, right around strengthening and supper bass;
7, according to the independent 16-channel audio coding method described in the claim 1, it is characterized in that, can describe each passage produces the audio signal can be used for offsetting interference signal according to the environment needs rule in the encoding compression data of generation.
8, according to the independent 16-channel audio coding method described in the claim 1, it is characterized in that, can describe each passage is modulated into the audio signal of orientable propagation according to the environment needs rule in the encoding compression data of generation.
9,, the data decompression of encoding compression is come out to be reduced into audio signal, and, carry out directed modulation or generate the compensating audio signal that de-noising is used according to the requirement of coded data as arbitrary described independent 16-channel audio coding/decoding method in the claim 1 to 8.
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| CNA2006100872087A CN101090273A (en) | 2006-06-13 | 2006-06-13 | Independent 16-channel audio code decode algorithm |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964188A (en) * | 2010-04-09 | 2011-02-02 | 华为技术有限公司 | Voice signal coding and decoding methods, devices and systems |
| CN102262881A (en) * | 2010-05-24 | 2011-11-30 | 中科开元信息技术(北京)有限公司 | AVS (audio video standard) destructive audio based nondestructive coding and decoding expansion method |
| CN104813588A (en) * | 2012-10-09 | 2015-07-29 | 阿尔卡特朗讯 | Secure and lossless data compression |
| CN112218016A (en) * | 2019-07-09 | 2021-01-12 | 海信视像科技股份有限公司 | Display device |
-
2006
- 2006-06-13 CN CNA2006100872087A patent/CN101090273A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964188A (en) * | 2010-04-09 | 2011-02-02 | 华为技术有限公司 | Voice signal coding and decoding methods, devices and systems |
| CN101964188B (en) * | 2010-04-09 | 2012-09-05 | 华为技术有限公司 | Voice signal coding and decoding methods, devices and systems |
| US9672830B2 (en) | 2010-04-09 | 2017-06-06 | Huawei Technologies Co., Ltd. | Voice signal encoding and decoding method, device, and codec system |
| CN102262881A (en) * | 2010-05-24 | 2011-11-30 | 中科开元信息技术(北京)有限公司 | AVS (audio video standard) destructive audio based nondestructive coding and decoding expansion method |
| CN104813588A (en) * | 2012-10-09 | 2015-07-29 | 阿尔卡特朗讯 | Secure and lossless data compression |
| US9740720B2 (en) | 2012-10-09 | 2017-08-22 | Alcatel Lucent | Secure and lossless data compression |
| CN112218016A (en) * | 2019-07-09 | 2021-01-12 | 海信视像科技股份有限公司 | Display device |
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