1333641 •.' 今細I月巧日修正替換頁 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種音頻訊號處理技術，特別係關於一種音頻 訊號之編碼及解碼方法及其裝置。 【先前技術】 通常’音頻訊號編碼裝置壓縮一音頻訊號為一單聲道（m〇n〇) 或身歷聲（stereo)類型之縮混（downmix)訊號，而不是壓縮多 * 通道音頻訊號之各個通道。音頻訊號編碼裝置傳輸壓縮之縮混訊 號連同一空間資訊訊號（或者輔助資料訊號）至一解碼裝置，或 者儲存此壓縮縮混訊號及此空間資訊訊號於一儲存媒體中。 這種情況下，在縮混多通道音頻訊號提取之空間資訊訊號， 係用於自一壓縮縮混訊號復原一初始多通道音頻訊號。 空間資訊訊號包含一標頭（header)及一空間資訊。並且，組 態資訊係包含於此標頭中。標頭為用以解釋空間資訊之資訊。 ® 曰頻5凡號解竭裝置利用包含於標頭中之組態資訊解碼空間 資訊，包含於標頭中之組態資訊被傳輸至一解碼裝置，或者連同 空間資訊一起儲存於一儲存媒體中。 一音頻訊號編碼裝置多工（multiplex) 一編碼縮混訊號及此空 間資訊訊號-起為—位元流形式，並接著傳輸此多卫訊號至一解 碼裝置。由於_資訊通常為不變的，因此包含有組態資訊之標 頭被插入-位猶中一次。由於傳輸之組態資訊係初始插入音頻 訊號-次’因此假如自—任意時間點複製此音頻訊號時，由於不 • r r* 5 月少修正替換頁 存在組態資訊，則音頻訊號解碼裝置在解碼空間資訊時存在一問 題。也就是說，假如在廣播、隨選視訊或類似情況下，由於音頻 訊號係經由使用者之請求卜特定時間點複製，而不是由初始部 複1 ’因此音頻訊號解碼裝置不㈣朗包含於音頻訊號中傳輸 之組態資訊。由此，不能夠解碼空間資訊。 【發明内容】 鑒於以上的問題，本發明的主要目的在於提供一種音頻訊號 之、爲碼及解碼方法及其裝置，其透過使得標頭選擇性地包含於空 間資訊訊號之框（frame)巾，#以能_碼此音頻訊號。 本發明之另-目的在於提供—種音頻訊號之編碼及解碼方法 /、褒置’其透過使得複數個標頭包含於—空間資訊訊號中，進 而陳日頻喊自-隨機點複製，也能夠解碼此音頻訊號。 人因此’為達上述目的’本發明所揭露之音頻訊號解碼方法包 。、下’驟.接收包含有—縮混訊號及—空間資訊訊號之音頻訊 次\如果&頭係包含於空間資訊訊號中，則自標頭中提取組態 貝況’提取空間魏訊號包含之空間資訊；以及藉由組態資訊及 空間資訊轉換縮混訊號為—多通道訊號。 【實施方式】 ° 有關本發明的特徵與實作，賊 明如下。 為了理解本發明’於音頻錢解碼裝置及方狀前，首先對 1333641 丨/月”日修正替換頁 音頻訊號之編碼裝置及方法作出解釋。然而，本發 及方法並不侷限於下文之解媽裝置及其方法。並且，本發明適用 於利用m資訊產生多通道之音頻編财案，以及刪（鹏G 1/2-層BI)及進階音頻編碼（AAC)等。 第圖」為本發明一實施例之音頻訊號之構造示意圖，其 中音^訊號自「音頻訊號編碼裝置傳輸至音頻訊號解碼裝置。” 月'考帛1圖」’音頻訊號包含-音頻据述符101，-縮 混訊號103以及一空間資訊訊號1〇5。 假如使用編碼方案㈣複製廣播或_物之音舰號，音頻 訊號則可以包含漏㈣職音娜财1G1及概訊號咖本 發明可以包含空間資訊訊號1G5為辅助資料。為了使音頻訊號解 碼裝置不需分析音頻峨而瞭解音頻之編碼解碼器（⑺㈣之基 本資訊’音舰號可以選擇性地包含音頻贿符1()1。音頻描述符 1〇1由音簡碼必須之少量基本資驗成，例如傳輸音頻訊號之傳 輸率，通道數量，壓縮資料之取樣頻率，指示當前使用編碼解碼 器之識別符，及其它類似物等等。 音頻訊號解魏置藉由音娜述符1G1，__音頻訊號所 使用之編碼譯碼器之類型。特別地，利用音頻描述符1(u，音頻訊 號解碼裝置能夠瞭解接收之音頻訊號是否是利用空間資％訊藥 105及縮混訊號103復原一多通道之訊號。這時，多通道可以包含 一虛擬三維環繞（surround)以及一實際多通道。藉由三維環鋒技 1333641 _月”日修正替換頁 術，透過一或多工通道使得具有結合一起之空間資訊訊號1〇5及 縮混訊號103之音頻訊號可聽見。 音頻描述符1〇1之定位係獨立於音頻訊號所包含之縮混訊號 103或空間資訊訊號1〇5，例如，音頻描述符1〇1定位於一顯示音 頻訊號之獨立區域中。 如果標頭沒有提供至縮混訊號103 ’音頻訊號解碼裝置則能夠 利用音頻描述符101來解碼縮混訊號1〇3。 縮混§fl號103為產生於多通道縮混的訊號。縮混訊號1〇3能 夠產生自音頻訊號解碼裝置（圖中未顯示）所包含之一縮混單元 (圖中未顯示），或者人工產生。 縮混sfl號103能夠分類至包含空間資訊訊號105之一組内， 或者不包含標頭之一組内。 如果縮混訊號103包含標頭，標頭則藉由一框單元包含於各 個框中。如果縮混訊號1〇3不包含標頭，如上文所描述，縮混訊 號103能夠透過一音頻訊號解碼裝置使用音頻描述符ι〇1進行解 碼。縮混訊號103或者具有包含標頭用於各個框之形式，或者具 有不包含標頭之形式。並且，縮混訊號1〇3以相同方式包含於一 音頻訊號中，直至内容結束。 空間資訊訊號105也可以分類至包含有標頭及空間資訊之一 組内’以及僅包含空間資訊不包含標頭之一組内。空間資訊訊號 105之標頭區別於縮混訊號ι〇3之標頭，由於其不必要相同地插入 1333641 卿月)細正替換頁 各個框中。特別地，空間資訊訊號105能夠同時使用包含有標頭 之框及不包含標頭之框。包含於空間資訊訊號105之標頭中的大 多數資訊為組態資訊，其透過解釋空間資訊來解碼空間資訊。 「第2圖」為本發明之另一實施例之音頻訊號之構造示意圖， 其中此音頻訊號自一音頻訊號編媽裝置傳輸至一音頻訊號解碼裝 置。 請參考「第2圖」’一音頻訊號包含縮混訊號1〇3及空間資訊 訊號105。並且，音頻訊號以框排列之基本位元流（Es)形式存 在。 各個縮混訊號103及空間資訊訊號1〇5偶爾以一獨立基本位 元流形式傳輸至一音頻訊號解碼裝置。並且如「第2圖」顯示， 縮混訊號103及空間資訊信號105能夠結合為一基本位元流形 式，以傳輸至音頻訊號解碼裝置。 假如縮混訊號103及空間資訊訊號1〇5結合為一基本位元流 形式，且傳輸至音頻訊號解碼裝置，則空間資訊訊號1〇5能夠包 含於縮混訊號103之辅助資料或附加資料（延伸資料）之位置。 並且，音頻訊號可包含訊號識別資訊，以顯示空間資訊訊號 105是否結合於縮混訊號103。 空間資訊訊號105之框能夠被分類為包含有標頭201及空間 資訊203之一組，以及僅包含空間資訊203之一組。特別地，空 間資訊訊號105能夠同時使用包含標頭201之框以及不包含標頭 1333641_ 會II月> 修正替換頁 201之框。 在本發明中，標頭201插入空間資訊訊號105中至少一次。 特別地，音頻訊號編碼裝置可以插入標頭2〇1於空間資訊訊號1〇5 之各個框中，週期性地插入標頭2〇1於空間資訊訊號1〇5之框的 各個固定間隔中，或者非週期性地插入標頭2〇1於空間資訊訊號 105之框的各個任意間隔中。 音頻訊號可包含用以指示標頭201是否包含於框中之資訊。 如果標頭201係包含於空間資訊訊號1〇5中，音頻訊號解碼 裝置則自標頭201中提取組態資訊2〇5，並接著依照此組態資訊 205解碼於標頭201之後傳輸之空間資訊2〇3。由於標頭2〇1為透 過解釋空間資訊203用來解碼之資訊，因此標頭2〇1則於音頻訊 號傳輸之較早階段被傳輸。 如果標頭201不包含於空間資訊訊號1〇5中，音頻訊號解石馬 裝置則利用較早階段傳輸之標頭2〇1來解碼空間資訊2〇3。 如果標頭2〇1在音頻訊號由音頻編碼裝置傳輸至音頻解碼裝 置之同時丟失，或者如絲位元流形式雜之音頻峨自其中間 捕碼以帛赠播賴似物等，音頻訊號解碼裝置則不能夠使用 先前傳輸之標頭观。這種情況下，音頻訊號解碼裝置自標頭2〇1 中提取組態資訊2〇5，其中此標頭2〇1係區別於最初插入音頻訊說 =之先前標頭20丨，並且然後能夠提取之組態資訊2G5解石祕 曰頻訊號it時’自插入音頻訊號中之標頭2〇i S取之組態資訊 13-33641 -- 人 年//月)夕日修正替換頁 205可以等同於或區別於先前之組態資訊205，其中此先前組態資 訊205提取自較早階段傳輸之標頭2〇1。 如果標頭201為變化的，組態資訊2〇5可提取自一新的標頭 201 ’提取的組態資訊205被解碼，並且然後於標頭201之後傳輸 之空間資訊203被解碼。如果標頭201為不變的’則需要判斷新 標頭201是否等同於之前傳輸之舊標頭2〇1。如果上述兩種標頭 201係互相不同的’則能夠偵測一錯誤出現於音頻訊號傳輸路徑上 之音頻訊號中。 自空間資訊訊號105之標頭201提取之組態資訊205為用於 解釋空間資訊203之資訊。 空間資訊訊號105能夠包含下面資訊（下文中稱作為〃時間 對準資訊（time align information)〃），用以在透過音頻訊號解碼裝 置使用縮混訊號103及空間資訊訊號1〇5產生多通道之過程中區 別兩訊號之時間延遲偏差。 自音頻訊號編碼裝置傳輸至音頻訊號解碼裝置之音頻訊號透 過一解多工單元（demultiplexing unit)(圖中未顯示）剖析，並接 著被分離至縮混訊號103及空間資訊訊號1〇5中。 由解多工早元分離之縮混訊號1〇3被解碼，解碼之縮混訊號 103利用空間資訊訊说1〇5產生一多通道。在透過結合縮混訊號 103及空間資訊訊號105產生多通道時，音頻訊號解碼裝置能夠藉 由包含於組態資訊205中之時間對準資訊（圖中未顯示），以調整 1333641 御I月，修正替換頁 - 兩訊號之同步，結合兩訊號之起點位置及類似物，其中組態資訊 205係提取自空間資訊訊號1〇5之標頭2〇1。 時間槽之位置資訊207係包含於空間資訊訊號1〇5之空間資 訊203中，其中一參數將應用於此時間槽。作為一空間參數（空 間尾接（spatial cue))’其中存在有指示音頻訊號間之能源偏差之 通道級別（channel level)偏差’指示音頻訊號之親密性及相似度 之通道間相關（interchannel correlations )，指示利用其它訊號預測 曰頻訊號值之係數之通道預測係數（channei predicti〇n 馨 coefficents)。下文中’各個空間尾接或空間尾接束將被稱作〃參 數"。1333641 •. The present invention relates to an audio signal processing technique, and more particularly to an audio signal encoding and decoding method and apparatus therefor. [Prior Art] Usually, the 'audio signal encoding device compresses an audio signal into a mono (m〇n〇) or stereo type (downmix) signal instead of compressing multiple *channel audio signals. aisle. The audio signal encoding device transmits the compressed downmix signal to the same spatial information signal (or auxiliary data signal) to a decoding device, or stores the compressed downmix signal and the spatial information signal in a storage medium. In this case, the spatial information signal extracted by the downmix multi-channel audio signal is used to recover an initial multi-channel audio signal from a compressed downmix signal. The spatial information signal includes a header and a spatial information. Also, the configuration information is included in this header. The header is information used to explain spatial information. The 曰 5 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 凡 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用. An audio signal encoding device multiplexes a coded downmix signal and the spatial information signal in the form of a bit stream, and then transmits the multi-signal signal to a decoding device. Since the _ information is usually unchanged, the header containing the configuration information is inserted once. Since the transmission configuration information is initially inserted into the audio signal-times, therefore, if the audio signal is copied from any time point, the audio signal decoding device is decoding because the configuration information is not corrected in the rr* 5 month correction replacement page. There is a problem with spatial information. That is to say, if in the broadcast, on-demand video or the like, the audio signal is copied at a specific point in time via the user's request, instead of being copied by the initial part, the audio signal decoding device is not included in the audio. Configuration information transmitted in the signal. Thus, spatial information cannot be decoded. SUMMARY OF THE INVENTION In view of the above problems, a main object of the present invention is to provide an audio signal code and decoding method and apparatus thereof, which are configured to selectively include a header in a frame of a spatial information signal. #以能_码This audio signal. Another object of the present invention is to provide a method for encoding and decoding audio signals, and to transmit a plurality of headers in a spatial information signal, and then to perform a random-copying of the random frequency. Decode this audio signal. Therefore, the audio signal decoding method package disclosed by the present invention is the object of the present invention. The next step is to receive the audio signal containing the -downmix signal and the space information signal. If the & head is included in the spatial information signal, extract the configuration from the header. 'Extracting space Wei signal contains Spatial information; and conversion of the downmix signal to - multi-channel signal by configuring information and spatial information. [Embodiment] ° Regarding the features and implementations of the present invention, the thief is as follows. In order to understand the present invention, before the audio money decoding device and the square, the encoding device and method for correcting the replacement page audio signal are first explained. However, the present invention and method are not limited to the following solution. The device and the method thereof, and the present invention is applicable to the use of m information to generate multi-channel audio coding, as well as deleting (Peng G 1/2-layer BI) and advanced audio coding (AAC), etc. A schematic diagram of the structure of an audio signal according to an embodiment of the present invention, wherein the audio signal is transmitted from the "audio signal encoding device to the audio signal decoding device." "Month' test 1" "audio signal includes - audio descriptor 101, - downmix Signal 103 and a spatial information signal 1〇5. If you use the coding scheme (4) to copy the broadcast or _ thing sound ship number, the audio signal can include the leak (four) job tone Na Cai 1G1 and the general information coffee book. The invention can include the space information signal 1G5 as auxiliary data. In order to make the audio signal decoding device not need to analyze the audio 峨 and understand the audio codec ((7) (4) the basic information 'sound ship number can optionally include the audio bribe 1 () 1. The audio descriptor 1 〇 1 by the short code A small amount of basic test, such as the transmission rate of the transmitted audio signal, the number of channels, the sampling frequency of the compressed data, the identifier of the currently used codec, and the like, etc. The audio signal is decoded by the sound. The type of codec used by the audio signal 1G1, __ audio signal. In particular, the audio descriptor 1 is used (u, the audio signal decoding device can know whether the received audio signal is using the space resource 105 and The downmix signal 103 recovers a multi-channel signal. At this time, the multi-channel can include a virtual three-dimensional surround and an actual multi-channel. By three-dimensional ring-finishing technology 1333361 _ month" correction replacement page, through one or more The working channel makes the audio signal with the spatial information signal 1〇5 and the downmix signal 103 combined together audible. The positioning of the audio descriptor 1〇1 is independent of the audio. The downmix signal 103 or the spatial information signal 1〇5 included in the number, for example, the audio descriptor 101 is located in a separate area of the display audio signal. If the header is not provided to the downmix signal 103 'audio signal decoding device The audio descriptor 101 can be used to decode the downmix signal 1〇3. The downmix §fl number 103 is a signal generated by multi-channel downmixing. The downmix signal 1〇3 can be generated from the audio signal decoding device (not shown in the figure) Contains one of the downmixing units (not shown), or manually generated. The downmix sfl number 103 can be classified into one of the groups containing the spatial information signal 105, or not within one of the headers. The signal 103 includes a header, and the header is included in each frame by a frame unit. If the downmix signal 1〇3 does not include a header, as described above, the downmix signal 103 can use audio through an audio signal decoding device. The descriptor ι〇1 is decoded. The downmix signal 103 either has a form including a header for each box, or has a form that does not include a header. And, the downmix signal 1〇3 is included in the same manner in one. In the audio signal, until the end of the content. The spatial information signal 105 can also be classified into a group containing header and spatial information 'and a space group containing only one of the headers. The spatial information signal 105 header difference In the header of the downmix signal ι〇3, since it is not necessary to insert the same number of frames in the same way, in particular, the spatial information signal 105 can simultaneously use the frame containing the header and not including the standard. The frame of the head. Most of the information contained in the header of the spatial information signal 105 is configuration information, which decodes spatial information by interpreting spatial information. "2" is an audio signal of another embodiment of the present invention. The schematic diagram of the audio signal is transmitted from an audio signal device to an audio signal decoding device. Please refer to "Figure 2". An audio signal contains a downmix signal 1〇3 and a spatial information signal 105. Also, the audio signal exists in the form of a basic bit stream (Es) arranged in a frame. Each of the downmix signal 103 and the spatial information signal 1〇5 is occasionally transmitted to an audio signal decoding apparatus in the form of a separate basic bit stream. And as shown in Fig. 2, the downmix signal 103 and the spatial information signal 105 can be combined into a basic bit stream for transmission to the audio signal decoding device. If the downmix signal 103 and the spatial information signal 1〇5 are combined into a basic bit stream format and transmitted to the audio signal decoding device, the spatial information signal 1〇5 can be included in the auxiliary data or additional data of the downmix signal 103 ( Extend the location of the data). Moreover, the audio signal may include signal identification information to indicate whether the spatial information signal 105 is combined with the downmix signal 103. The frame of the spatial information signal 105 can be classified into a group including the header 201 and the spatial information 203, and only one of the spatial information 203. In particular, the spatial information signal 105 can simultaneously use the box containing the header 201 and the box containing no header 1333641_II]<correction replacement page 201. In the present invention, the header 201 is inserted into the spatial information signal 105 at least once. In particular, the audio signal encoding device can insert the header 2〇1 in each frame of the spatial information signal 1〇5, and periodically insert the header 2〇1 in each fixed interval of the frame of the spatial information signal 1〇5, Alternatively, the header 2〇1 is inserted aperiodically in any arbitrary interval of the frame of the spatial information signal 105. The audio signal may include information indicating whether the header 201 is included in the frame. If the header 201 is included in the spatial information signal 1〇5, the audio signal decoding device extracts the configuration information 2〇5 from the header 201, and then decodes the space transmitted after the header 201 according to the configuration information 205. Information 2〇3. Since the header 2〇1 is the information used for decoding by interpreting the spatial information 203, the header 2〇1 is transmitted at an earlier stage of the audio signal transmission. If the header 201 is not included in the spatial information signal 1〇5, the audio signal decoding device uses the header 2〇1 transmitted at an earlier stage to decode the spatial information 2〇3. If the header 2〇1 is lost while the audio signal is transmitted from the audio encoding device to the audio decoding device, or if the audio stream is in the form of a bit stream, the audio signal is decoded from the middle to capture the video, etc., and the audio signal is decoded. The device is not able to use the header view of the previous transmission. In this case, the audio signal decoding apparatus extracts the configuration information 2〇5 from the header 2〇1, wherein the header 2〇1 is different from the previous header 20丨 originally inserted into the audio message==, and then Extracted configuration information 2G5 calculus secret frequency signal it when 'self-inserted audio signal header 2 〇 i S configuration information 13-33641 -- person year / / month) eve correction replacement page 205 can be equivalent Or different from the previous configuration information 205, wherein the previous configuration information 205 is extracted from the header 2〇1 transmitted at an earlier stage. If the header 201 is changed, the configuration information 2〇5 can extract the configuration information 205 extracted from a new header 201' and the spatial information 203 transmitted after the header 201 is decoded. If the header 201 is unchanged, then it is necessary to determine whether the new header 201 is equivalent to the old header 2〇1 previously transmitted. If the two headers 201 are different from each other, it is possible to detect an error occurring in the audio signal on the audio signal transmission path. The configuration information 205 extracted from the header 201 of the spatial information signal 105 is information for interpreting the spatial information 203. The spatial information signal 105 can include the following information (hereinafter referred to as time align information) for generating a multi-channel by using the downmix signal 103 and the spatial information signal 1〇5 through the audio signal decoding apparatus. The time delay deviation of the two signals is distinguished in the process. The audio signal transmitted from the audio signal encoding device to the audio signal decoding device is parsed through a demultiplexing unit (not shown) and then separated into the downmix signal 103 and the spatial information signal 1〇5. The downmix signal 1〇3 separated by the multiplexed early element is decoded, and the decoded downmix signal 103 generates a multi-channel by using the spatial information signal 1〇5. When multi-channel is generated by combining the downmix signal 103 and the spatial information signal 105, the audio signal decoding device can adjust the 1333641 Royal I month by using the time alignment information (not shown) included in the configuration information 205. Correction replacement page - synchronization of two signals, combining the starting position of the two signals and the like, wherein the configuration information 205 is extracted from the header 2〇1 of the spatial information signal 1〇5. The time slot location information 207 is included in the spatial information signal 203 of the spatial information signal 1〇5, one of which will be applied to this time slot. As a spatial parameter (spatial cue), there is a channel level deviation indicating the energy deviation between the audio signals' interchannel correlations indicating the intimacy and similarity of the audio signals. , indicating channel prediction coefficients (channei predicti〇n 馨 coefficents) that use other signals to predict the coefficients of the 曰 frequency signal value. In the following, 'each space tail or space tail bundle will be referred to as the 〃 parameter".
假如N個參數存在於空間資訊訊號1〇5所包含之框中，則N 個參數被分別應用於各框之特定時間槽位置。如果用以指示參數 即將應用於框中包含之其中一時間槽之資訊被命名為時間槽之位 置為汛207 ’則音頻訊號解碼裝置利用此將應用有參數之時間槽之 位置資訊207，以解碼空間資訊2()3。這時，此參數係包含於空間_ 資訊203中。 「第3圖」為本發明—實施例之音娜號解碼裝置之方塊圖。 请參考「第3 ®」’触本發明之實細之音舰號解瑪襄置 係包含-接收單元及—提取單元3〇3。 、音頻訊號解碼裝置之接收單元3〇1藉由一輸入終端·，並透 。曰頻訊號解碼錢來接收以基本位元祕式傳輸之音頻訊號。If N parameters exist in the frame contained in the spatial information signal 1〇5, the N parameters are respectively applied to the specific time slot positions of the respective frames. If the information indicating that the parameter is to be applied to one of the time slots included in the box is named as the time slot, the position is 汛 207 ', then the audio signal decoding device uses the position information 207 of the time slot to be used for decoding. Spatial information 2 () 3. At this time, this parameter is included in the space_information 203. Fig. 3 is a block diagram of the sound source decoding device of the present invention. Please refer to "Third ® ®" to touch the actual sound of the invention. The semaphore is equipped with a receiving unit and an extracting unit 3〇3. The receiving unit 3〇1 of the audio signal decoding device is transparent through an input terminal. The 曰 frequency signal decodes the money to receive the audio signal transmitted in the basic bit secret mode.
12 13-33641 刺月〉細正替換頁 由音頻訊號解碼裝置接收之音頻訊號包含一音頻描述符lOi 與一縮混訊號103 ’並可以更包含空間資訊訊號1〇5作為辅助資料 或附加資料（延伸資料）。 音頻訊號解碼裝置之提取單元3〇3提取組態資訊2〇5自接收 音頻訊號包含之標頭201 ’並隨後藉由一輸出終端〇UT1輸出提取 之組態資訊205。 曰頻sfl號可包含標頭識別資訊’用以識別標頭是否包含 纸—框中。 音頻訊號解碼裝置藉自包含於音頻訊號巾之標賴別資訊， 以識別標頭201是否包含於此框中。如果標頭2〇1包含其中，則 音頻訊號解碼裝置自標頭2〇1提取組態資訊2〇5。在本發明中，至 少一標頭201包含於空間資訊訊號1〇5中。 「第4圖」為本發明之另—實施例之音頻訊號解碼裝置之方 塊圖。 月多考第4圖」’本發明之另一實施例之音頻訊號解碼裝置 下包含接收單S 301，解多工單元4〇卜核心解碼單元·，多通 道產生單元405,空間資訊解碼單元4〇7及提取單元3〇3。 音頻訊號解碼裝置之接收單元3G1藉由—輸鱗端脱，以接 收以位7L流喊傳輸之音醜號自—音敏號編竭裝置。並且， 接收單元301發送此接收音頻訊號至解多工單元4⑴。 解多工單元·分離接收單元發送之音賴號為一編碼 13 1333641__ 丨丨· 曰修正替換頁 縮混訊號103及一編碼空間資訊訊號1〇5。解多工單元4〇1傳輸自 一位元流分離之編碼縮混訊號1〇3至核心解碼單元4〇3，並傳輸自 位元流分離之編碼空間資訊訊號1〇5至提取單元3〇3。 編碼縮混訊號103由核心解碼單元403解碼，並然後傳輸至 多通道產生單元405。編碼空間資訊訊號1〇5包含標頭2〇1及空間 資訊203。 如果標頭201包含於編碼空間資訊訊號1〇5中，提取單元303 則提取組態資訊205自標頭201。提取單元303藉由音頻訊號包含 之標頭識別資訊，能夠區別標頭2〇1之存在。特別地，標頭識別 貧訊可以表示標頭201是否包含於空間資訊訊號1〇5所包含之框 中。標頭識別資訊可以指示框的順序或者音頻訊號之位元序列， 如果標頭201包含於框中，則自標頭2〇1提取之組態資訊2〇5包 含於此框順序或位元序列中。 藉由標頭識別資訊，如果判斷標頭2〇1包含於框中，則提取 單το 303自包含於框中之標頭201提取組態資訊2〇5。然後，解碼 提取之組態資訊205。 空間資訊解碼單元4〇7依照解石馬之組態資訊2〇5，以解碼包含 於框中之空間資訊203。 並且，多通道產生單兀405彻解碼縮混纖1〇3及解碼空 間資訊203’以產生-多通道職，並且然後藉由一輸出終端〇υτ2 輪出產生之多通道訊號。 1333641 _ _ 带N/月)夕日修正替換頁 「第5圖」為本發明一實施例之音頻訊號解碼方法之流程圖。 請參考「第5圖」’一音頻訊號解碼裝置接收空間資訊訊號 105 ’其中空間資訊訊號1〇5係由一音頻訊號編碼裝置以位元流形 式傳輸（步驟501)。 如上文所述，空間資訊訊號105能夠分類為以獨立於縮混訊 號103之位元流傳輸之一組，或者分類為結合縮混訊號1〇3 一起 傳輸之一組。 音頻訊號之解多工單元401係分離所接收之音頻訊號為編碼 混訊號103及編碼空間資訊訊號1〇5 ^編碼空間資訊訊號1〇5 包含標頭201及空間資訊203。如果標頭201包含於空間資訊訊號 105之框中，音頻訊號解碼裝置則識別標頭2〇1 (步驟5〇3)。 音頻訊號解碼裝置提取組態資訊205自標頭201 (步驟505)。 並且，音頻訊號解碼裝置利用提取之組態資訊205，以解碼空 間資訊203 (步驟507)。 第6圖」為本發明之另一實施例之音頻訊號解碼方法之流 程圖。 請參考「第6圖」，一音頻訊號解碼裝置接收空間資訊訊號 105，其中空間資訊訊號105係由一音頻訊號編碼裝置以位元流形 式傳輸（步驟501)。 如上文所述，空間資訊訊號1〇5能夠被分類為以獨立於縮混 訊號103之位元流傳輸之—組，或者分類為包含於縮混訊號⑻ 15 1333641 p年I丨月,修正替換頁丨 之輔助資料或延伸資料中一起傳輸之一組。 音頻訊號之解多工單元401分離接收之音頻訊號為編碼縮混 訊號103及編碼空間資訊訊號1〇5。編碼空間資訊訊號105包含標 頭201及空間資訊203。音頻訊號解碼裝置判斷標頭201是否包含 於框中（步驟601)。 如果標頭201包含於框中，音頻訊號解碼裝置則識別標頭2〇1 (步驟503)。 音頻訊號解碼裝置然後提取組態資訊205自標頭201 (步驟 505)。 音頻訊號解碼裝置判斷自標頭2〇1提取之組態資訊205是否 為從包含於空間資訊訊號105中之第一標頭2〇1提取的組態資訊 205 (步驟 603 )。 如果組態資訊205提取自首先由音頻訊號提取的標頭2〇1，音 頻訊號解碼裝置則解碼組態資訊2〇5 (步驟611) ’並依照此解碼 組態資訊205，以解碼於組態資訊2〇5之後傳輸之空間資訊2〇3。 如果自音頻訊號提取之標頭2〇1不是首先從空間資訊訊號 105提取之標頭201 ’音頻訊號解碼裝置則判斷自標頭2〇1提取之 組態資訊205是否等同於自第一標頭2〇1提取之組態資訊2〇5(步 驟 605)。 如果此提取組態資訊205等同於提取自第一標頭2〇1之組態 資訊205，音頻訊號解碼裝置則利用此提取自標頭2〇1之解碼組態 16 13.33641 日修正替換頁 資訊205’以解碼空間資訊2〇3。 如果此提取組態資訊205不同於從第—標頭2〇ι提取之組態 資訊音頻訊號解峨置則判斷是否一錯誤出現於由音頻訊號 編碼裝置至音頻訊號解碼裝置之傳輸路徑上之音頻訊號（步驟 607)。 如果此組怨貧訊205為變化的，即使组態資訊挪不同於自 第-標頭201提取之組態資訊2〇5，上述錯誤也不會出現。因此， 音頻訊號解碼袭置更新標頭2〇1為新的標頭2〇ι (步驟_)。音 頻訊號解碼裳置然後解碼提取自此更新標頭2〇1之組態資訊（步 驟 611)。 ' 依照此解碼組態資訊2〇5，音頻訊號解碼裝置解碼於此組態資 訊205之後傳輸之空間資訊203。 如果組恶貧訊205為不變的，且不同於提取自第一標頭2〇1 鲁之組態資訊2〇5，則表示錯誤會出現於音頻訊號傳輸路徑上。因 此’音頻訊號解碼裝置除去包含於框中之空間資訊2〇3，其中此空 間資訊2〇3中包含有錯誤組態資訊2〇5，或者修正空間資訊2〇3 之錯誤（步驟613)。 「第7圖」為本發明之又一實施例之音頻訊號解碼方法之流 程圖。 凊參考「第7圖」，-音頻訊號解碼|置接收空間資訊訊號 105 ’其中空間資訊訊號1〇5係由一音頻訊號編碼裝置以位元流形 17 1333641_ 丨月4修正替換頁 式傳輸（步驟501 )。 音頻訊號之解多工單元401分離所接收音頻訊號為編碼縮混 訊號1〇3及解碼空_訊訊號⑽。這時，即將參數表示之時間槽 之位置資訊207係包含於此空間資訊訊號1〇5中。 音頻訊號解碼農置從空間資訊2〇3 #提取時間槽之位置資訊 207 (步驟 701)。 音頻訊號解碼健提取之時_之位㈣訊，透過調整 即將應用有-參數之時間槽位置’以應用此參數至對應時間槽（步 驟 703)。 &「第8圖」為本發明—實施例之獲得表示時_數目之位置 資訊之方法流關。表科_數目之位置資訊為分配用以表示 此時間槽之位置資訊207之位元數目。 表示時間槽數目之位置資訊能夠透過以下步驟而發現，里中 一第一參數係應麟此時間槽：自此時間槽數目減去此參數數 目，增加1至此減法結果’對此增加餘以2為底之對數，並應 用- ceil函數至此對數值。特別地，表示_有第-參數之時間 槽數目之位置資訊能夠透過公式ceil (log2(k_i+i》而獲得，其中Y 與"i〃分別表示時間槽數目及參數數目。 假言W為一自然數’則表示應用有㈣产參數之時間槽 數目之位置資訊被表㈣應时#參數之時間槽之位置資訊 2〇7。這時，應用有·數之時間槽之位置資訊2〇7能夠透過以 很"巧日修正替換頁 *---------- ,驟發現即對存在應用有Nth參數之時間槽及應用有外l)th :數之時間槽之間之時間槽，增加其數目至蝴⑻參數應用之 了間槽之位置纽，以及增加i至此增加值（步驟叫。特別地， (N+1)參數應用之時間槽之位置資訊可透過公式胸+释听 獲付’其巾r(N+l)係指示存在於翻有㈣)*參數之時間槽及應 用有N參數之時間槽之間之時間槽數目。 如果N參數應用之時間槽之位置資訊2〇7被發現，則能夠獲 付表不數目之時間槽位置資訊，以表示應财阶i) th參數之時間 槽位置。特別地’透過自時間槽數目中減去應用於—框之參數數 目及應用有N參數之時間槽位置資訊，以及增力冲+1)至此減法 值’此夠發現表不數目之時間槽位置資訊，以表示阶丨产參數應 用之犄間槽位置。特別地，透過公式eeil(lGg2(k i+N+1_j(N)))，能 夠發現應用有(N+lf參數之時間槽數目之位置資訊，其中 1及j(N)分別表示時間槽數目、參數數目及Nth參數表示之時 間槽之位置資訊205。 如果以上述方式獲得表示時間槽數目之位置資訊，則表示應 用有(N+l)th參數之時間槽數目之位置資訊具有與，/ 成反比之 分配位元數目。即，依據"N〃，表示應用有(Ν+1)&參數之時間槽 數目之位置資訊為一變化值。 「第9圖」為本發明之再一實施例之音頻訊號解碼方法之流 1333641 _ _吟修正替換頁 、 一音頻訊號解碼裝置接收一音頻訊號自一音頻訊號編碼裝置 (步驟901 )。音頻訊號包含音頻描述符101，縮混訊號1〇3及空 間資訊訊號105。 音頻訊號解碼裂置提取音頻訊號包含之音頻描述符1〇1 (步驟 9〇3)。指示音頻編碼解碼器（codec)之一識別符係包含於此音頻 描述101中。 音頻訊號解碼裝置藉由音頻描述符101，進而識別音頻訊號包 含有縮混訊號103及空間資訊訊號105。特別地，音頻訊號解碼震 鲁 置利用空間資訊訊號1〇5，能夠區別傳輸之音頻訊號為用以產生多 通道之訊號（步驟905 )。 並且，音頻訊號解碼裝置藉由空間資訊訊號105以轉換縮混 訊唬103為一多通道訊號。如上文所描述，標頭2〇1能夠以各個 預定間隔包含於空間資訊訊號1〇5中。 工業應用 正如上文所述，本發明之音頻訊號編碼及解碼方法及其裝置擊 此夠使得一標頭選擇性地包含於一空間資訊訊號中。 並且，如果複數個標頭包含於空間資訊訊號中，本發明之音 頻訊號編碼及解碼方法及其裝置能祕碼㈣資訊，即使是透過 音頻訊號解碼裝置自任意點複製此音頻訊號。 雖然本發明以前述之較佳實施例揭露如上，然其並非用以限 定本發明，任何熟習相像技藝者，在不脫離本發明之精神和範圍12 13-33641 刺月〉细正换页 The audio signal received by the audio signal decoding device includes an audio descriptor lOi and a downmix signal 103' and may further include spatial information signal 1〇5 as auxiliary data or additional data ( Extended information). The extracting unit 3〇3 of the audio signal decoding device extracts the configuration information 2〇5 from the received header 201' of the audio signal and then outputs the extracted configuration information 205 by an output terminal 〇UT1. The sfrequency sfl number may include header identification information 'to identify whether the header contains paper—in the box. The audio signal decoding device borrows the identification information included in the audio signal towel to identify whether the header 201 is included in the frame. If the header 2〇1 is included, the audio signal decoding apparatus extracts the configuration information 2〇5 from the header 2〇1. In the present invention, at least one header 201 is included in the spatial information signal 1〇5. Fig. 4 is a block diagram of an audio signal decoding apparatus according to another embodiment of the present invention. In the audio signal decoding apparatus of another embodiment of the present invention, a receiving unit S 301, a demultiplexing unit 4, a core decoding unit, a multi-channel generating unit 405, and a spatial information decoding unit 4 are included. 〇7 and extraction unit 3〇3. The receiving unit 3G1 of the audio signal decoding device receives the sound ugly self-sounding number compiling device by means of the -scaling end. And, the receiving unit 301 sends the received audio signal to the demultiplexing unit 4(1). The multiplexed unit and the separated receiving unit transmit the sound ray number as a code. 13 1333641__ 丨丨· 曰 Correct replacement page The downmix signal 103 and an encoded space information signal 1〇5. The demultiplexing unit 4〇1 transmits the coded downmix signal 1〇3 separated from the one bit stream to the core decoding unit 4〇3, and transmits the coded spatial information signal 1〇5 separated from the bit stream to the extracting unit 3〇. 3. The code downmix signal 103 is decoded by the core decoding unit 403 and then transmitted to the multi-channel generating unit 405. The code space information signal 1〇5 includes a header 2〇1 and a spatial information 203. If the header 201 is included in the code space information signal 1〇5, the extraction unit 303 extracts the configuration information 205 from the header 201. The extracting unit 303 can distinguish the existence of the header 2〇1 by the header identification information included in the audio signal. In particular, the header identification poorness can indicate whether the header 201 is included in the frame contained in the spatial information signal 1〇5. The header identification information may indicate the order of the frames or the sequence of bits of the audio signal. If the header 201 is included in the frame, the configuration information 2〇5 extracted from the header 2〇1 is included in the frame order or the bit sequence. in. By identifying the information by the header, if the header 2〇1 is included in the frame, the extraction unit το 303 extracts the configuration information 2〇5 from the header 201 included in the frame. The extracted configuration information 205 is then decoded. The spatial information decoding unit 4〇7 decodes the spatial information 203 included in the frame according to the configuration information 2〇5 of the solution. Moreover, the multi-channel generation unit 405 decodes the downmix fiber 1〇3 and decodes the spatial information 203' to generate a multi-channel job, and then rotates the generated multi-channel signal by an output terminal 〇υτ2. 1333641 _ _ with N/month) eve correction correction page "Fig. 5" is a flowchart of an audio signal decoding method according to an embodiment of the present invention. Please refer to "Fig. 5". An audio signal decoding device receives the spatial information signal 105', wherein the spatial information signal 〇5 is transmitted by the audio signal encoding device in a bit stream (step 501). As described above, the spatial information signal 105 can be classified as a group of bit streams that are independent of the downmix signal 103, or classified as a group that is transmitted together with the downmix signal 1〇3. The audio signal decoding multiplex unit 401 separates the received audio signal into a coded mixed signal 103 and a coded spatial information signal 1〇5. The coded space information signal 1〇5 includes a header 201 and spatial information 203. If the header 201 is included in the frame of the spatial information signal 105, the audio signal decoding device recognizes the header 2〇1 (step 5〇3). The audio signal decoding device extracts the configuration information 205 from the header 201 (step 505). And, the audio signal decoding apparatus uses the extracted configuration information 205 to decode the spatial information 203 (step 507). Figure 6 is a flow chart showing an audio signal decoding method according to another embodiment of the present invention. Referring to Fig. 6, an audio signal decoding apparatus receives a spatial information signal 105, wherein the spatial information signal 105 is transmitted by a voice signal encoding apparatus in a bit stream (step 501). As described above, the spatial information signal 1〇5 can be classified into a group that is transmitted in a stream independent of the downmix signal 103, or classified as being included in the downmix signal (8) 15 1333641 p year I month, corrected replacement One of the groups is transmitted together in the auxiliary data or extension data of the page. The audio signal separated by the audio signal multiplexing unit 401 is the encoded downmix signal 103 and the encoded spatial information signal 1〇5. The coded spatial information signal 105 includes a header 201 and spatial information 203. The audio signal decoding means judges whether or not the header 201 is included in the frame (step 601). If the header 201 is included in the frame, the audio signal decoding device recognizes the header 2〇1 (step 503). The audio signal decoding device then extracts the configuration information 205 from the header 201 (step 505). The audio signal decoding device determines whether the configuration information 205 extracted from the header 2〇1 is the configuration information 205 extracted from the first header 2〇1 included in the spatial information signal 105 (step 603). If the configuration information 205 is extracted from the header 2〇1 first extracted by the audio signal, the audio signal decoding device decodes the configuration information 2〇5 (step 611)' and decodes the configuration information 205 according to this decoding to decode the configuration. The spatial information transmitted after the information 2〇5 is 2〇3. If the header 2〇1 extracted from the audio signal is not the header 201' audio signal decoding device first extracted from the spatial information signal 105, it is determined whether the configuration information 205 extracted from the header 2〇1 is equivalent to the first header. 2〇1 extracted configuration information 2〇5 (step 605). If the extracted configuration information 205 is equivalent to the configuration information 205 extracted from the first header 2〇1, the audio signal decoding apparatus utilizes the decoding configuration 16 extracted from the header 2〇1. 'To decode space information 2〇3. If the extracted configuration information 205 is different from the configuration information audio signal solution extracted from the first header 2〇, it is determined whether an error occurs in the audio transmission path from the audio signal encoding device to the audio signal decoding device. Signal (step 607). If the group 205 is changed, even if the configuration information is different from the configuration information 2〇5 extracted from the first header 201, the above error will not occur. Therefore, the audio signal decoding hits the update header 2〇1 as a new header 2〇ι (step_). The audio signal decoding is then decoded and the configuration information extracted from this update header 2〇1 is decoded (step 611). According to this decoding configuration information 2〇5, the audio signal decoding apparatus decodes the spatial information 203 transmitted after the configuration information 205. If the group eccentricity message 205 is constant and different from the configuration information 2〇5 extracted from the first header 2〇1, it indicates that an error will occur on the audio signal transmission path. Therefore, the 'audio signal decoding apparatus removes the spatial information 2〇3 contained in the frame, wherein the space information 2〇3 contains the error configuration information 2〇5, or corrects the error of the spatial information 2〇3 (step 613). Fig. 7 is a flow chart showing an audio signal decoding method according to still another embodiment of the present invention.凊 Refer to "Figure 7", - Audio Signal Decoding | Receive Space Information Signal 105 'The spatial information signal 1 〇 5 is replaced by an audio signal encoding device with a bit stream manifold 17 1333641_ 丨月4 correction replacement page transmission ( Step 501). The audio signal demultiplexing unit 401 separates the received audio signal into a coded downmix signal 1〇3 and a decoded null_signal number (10). At this time, the position information 207 of the time slot indicated by the parameter is included in the space information signal 1〇5. The audio signal decoding farmer takes the space information 2〇3 # extraction time slot location information 207 (step 701). When the audio signal is decoded, the bit (4) is transmitted, and the parameter is applied to the corresponding time slot (step 703). <Fig. 8> is a method for obtaining the position information of the number of representations in the embodiment of the present invention. The location information of the table_number is the number of bits allocated to indicate the location information 207 of the time slot. The position information indicating the number of time slots can be found through the following steps. The first parameter in the middle is the time slot: the number of the time slot is subtracted from the number of time slots, and the result is increased by 1 to the result of the subtraction. For the base logarithm, and apply the -ceil function to this logarithmic value. In particular, the position information indicating the number of time slots having the first parameter can be obtained by the formula ceil (log2(k_i+i), where Y and "i〃 respectively represent the number of time slots and the number of parameters. A natural number ' indicates that the position information of the number of time slots in which the (four) production parameters are applied is shown in Table 4. The position information of the time slot of the # parameter is 2〇7. At this time, the position information of the time slot of the application number is 2〇7 It is possible to find a time slot with a Nth parameter applied and a time slot with an external l)th: number by replacing the page with a very good date. *---- Time slot, increase its number to the position of the slot in the application of the butterfly (8) parameter, and increase i to this added value (step call. In particular, the position information of the time slot of the (N+1) parameter application can be passed through the formula chest + The number of time slots between the time slot in which the (4)) parameter is parameterized and the time slot in which the N parameter is applied is used. If the position of the time slot is applied by the N parameter If the information 2〇7 is found, it will be able to receive the information of the time slot location of the number to indicate that it should Financial order i) th parameter time slot position. In particular, by subtracting the number of parameters applied to the frame from the number of time slots and applying the time slot position information with N parameters, and increasing the force +1) to the subtraction value, this is enough to find the time slot position of the number of tables. Information to indicate the position of the inter-turn slot for the application of the production parameters. In particular, by using the formula eeil(lGg2(k i+N+1_j(N))), it can be found that the position information of the number of time slots of the N+lf parameter is applied, where 1 and j(N) respectively represent the number of time slots. The number of parameters and the position information of the time slot indicated by the Nth parameter are 205. If the position information indicating the number of time slots is obtained in the above manner, it means that the position information of the number of time slots to which the (N+l)th parameter is applied has and/or The number of allocated bits is inversely proportional. That is, according to "N〃, the position information indicating the number of time slots in which the (Ν+1)& parameter is applied is a change value. "9th picture" is another one of the present invention. In the audio signal decoding method of the embodiment, stream 1363641 _ _ 吟 correction replacement page, an audio signal decoding device receives an audio signal from an audio signal encoding device (step 901). The audio signal includes an audio descriptor 101, a downmix signal 1 3 and the spatial information signal 105. The audio signal decoding split extracts the audio descriptor 1〇1 included in the audio signal (step 9〇3). An identifier indicating one of the audio codecs is included in the audio description 101. Audio signal The code device uses the audio descriptor 101 to identify the audio signal including the downmix signal 103 and the spatial information signal 105. In particular, the audio signal decoding uses the spatial information signal 1〇5 to distinguish the transmitted audio signal. The multi-channel signal is generated (step 905). Moreover, the audio signal decoding device converts the downmix buffer 103 into a multi-channel signal by using the spatial information signal 105. As described above, the header 2〇1 can be customized. The interval is included in the spatial information signal 1 〇 5. Industrial Applicability As described above, the audio signal encoding and decoding method of the present invention and its apparatus are such that a header is selectively included in a spatial information signal. If the plurality of headers are included in the spatial information signal, the audio signal encoding and decoding method of the present invention and the device thereof can secret code (4) information, even if the audio signal is copied from any point through the audio signal decoding device. The foregoing preferred embodiments are disclosed above, but are not intended to limit the present invention, and any skilled artisan will not be able to The spirit and scope of the present invention
20 Γ333641 .' ?/年"月〉> 修正替換頁 Θ胃可作☆狀更動與顯，目此本發明之專娜護範圍須視 本說明書所附之申請專利範圍所界定者為準。 【圖式簡單說明】 第1圖為本發明一實施例之音頻訊號之構造示意圖； 第2圖為本發明之另一實施例之音頻訊號之構造示意圖； 第3圖為本發明一實施例之音頻訊號解碼裝置之方塊圖； 第4圖為本發明之另一實施例之音頻訊號解碼裝置之方塊 ®圖； 第5圖為本發明一實施例之音頻訊號解碼方法之流程圖； 第6圖為本發明之另一實施例之音頻訊號解碼方法之流程 _， 第7圖為本發明之又一實施例之音頻訊號解碼方法之流程 圖； • 第8圖為本發明一實施例之獲得表示數量之位置資訊之方法 流程圖；以及 第9圖為本發明之再一實施例之音頻訊號解碼方法之流程 圖。 【主要元件符號說明】 101 音頻描述符 103 縮混訊號 105 空間資訊訊號 21 1333641 - 今Μ月< 曰修正替換頁 201 標頭 203 空間資訊 205 組態資訊 207 時間槽之位置資訊 301 接收單元 303 提取單元 401 解多工單元 403 核心解碼單元 405 多通道產生單元 407 空間資訊解碼單元 ΙΝ1 輸入終端 ΙΝ2 輸出終端 步驟501 接收空間資訊訊號 步驟503 識別標頭 步驟505 提取組態資訊 步驟507 解碼空間資訊 步驟601 存在標頭？ 步驟603 組態資訊提取自第一標頭？ 步驟605 提取之組態資訊是否等同於自第一標頭提取之 組態資訊？ 步驟607 偵測到錯誤出現？ 1333641 _巧日修正替換頁 步驟609 更新標頭 步驟611 解碼組態資訊 步驟701 提取時間槽之位置資訊 步驟703 應用參數至時間槽 步驟801 獲得應用有Ν&參數之時間槽之位置資訊 步驟803 置資訊 獲得表示應用有(N+lf參數之時間槽數目之位 步驟901 接收音頻訊號 步驟903 提取音頻描述符 步驟％5 道 藉由空間資訊訊號識別音頻訊號是否產生多通 2320 Γ333641 .'?/year"月〉> Correction of replacement page Θ stomach can be used for ☆ 状 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 . BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural diagram of an audio signal according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of an audio signal according to another embodiment of the present invention; Figure 4 is a block diagram of an audio signal decoding apparatus according to another embodiment of the present invention; Figure 5 is a flowchart of an audio signal decoding method according to an embodiment of the present invention; A flowchart of an audio signal decoding method according to another embodiment of the present invention. FIG. 7 is a flowchart of an audio signal decoding method according to still another embodiment of the present invention. FIG. 8 is a representation of an embodiment of the present invention. A flowchart of a method for calculating location information; and FIG. 9 is a flowchart of a method for decoding an audio signal according to still another embodiment of the present invention. [Main component symbol description] 101 Audio descriptor 103 Downmix signal 105 Spatial information signal 21 1333641 - Today's month < 曰 Correction replacement page 201 Header 203 Space information 205 Configuration information 207 Time slot position information 301 Receiving unit 303 Extracting unit 401 Demultiplexing unit 403 Core decoding unit 405 Multichannel generating unit 407 Spatial information decoding unit 输入1 Input terminal 输出2 Output terminal Step 501 Receiving spatial information signal Step 503 Identifying the header Step 505 Extracting the configuration information Step 507 Decoding the spatial information step 601 There is a header? Step 603 Is the configuration information extracted from the first header? Is the configuration information extracted in step 605 equivalent to the configuration information extracted from the first header? Step 607 detects that an error has occurred? 1333641 _ 巧日修正 replacement page step 609 update header step 611 decoding configuration information step 701 extraction time slot location information step 703 application parameter to time slot step 801 to obtain the location information of the time slot using the Ν & parameter step 803 The information acquisition indicates that the application has (the number of time slots of the N+lf parameter, step 901, receiving the audio signal, step 903, extracting the audio descriptor, step %5, and identifying whether the audio signal generates multi-pass by the spatial information signal.