201246949 六、發明說明： 【發明所屬之技術領域】 本發明係錢-麵讀音技術，_是-種高指向性之遠距離收音 裝置。 【先前技術】 按，人與人之«為鮮及普遍的方式岐透過言語，㈣借助額外 工具便可將彼此的躲互相錢，而料收音賴可較㈣容進行錄 製，但此種錄音收音賴在實際使収多有嚴相距離限制，使用者與收 音裝置（如麥克風）之間必須為短距離，因為隨著兩者之間的距離漸遠， 聲音辨識效果會隨之變差。 目前-般麥侧細_㈣侧m她應用於近 距離中，魅—可驗遠靴音之裝置，這在語音互動、㈣上是一大限 制1應付不了現今所有的需求；相對於近距離的語音，遠距離收音會因為 兄中的其匕干擾”人的講話聲音、f景雜音等因素，而大幅降低 綠辨識㈣㈣⑽咖，_帅赚麵，且系統 需隨者不同距離下自動調適麥克風增益，增加了^少困難度。 因此，本帅咖—嫩崎置，喊社述咖題，以達 =制環_音能留語音豐紐，具雜構及其實财式將詳述於下。 【發明内容】 置，其係於麥克風前端加裝 向性之麥克風，並能提高高 。本發s之主要目的在提供—種遠距收音裝 號角收a H ’即可使原本的麥錢成為具有指 頻θ訊’豐§語音特徵，並無須更換麥克風。 201246949 本發明之另-目的在提供__種^^距收音裝置，其係將—般麥克風或加 裝了號角收音器之麥克風排列成曲型麥克風_，以加強收音的指向性， 達到抑制環境雜訊之功能。 本發明之再-目的在提供—種遠距收音裝置，其係_預先設計之統 計曲線判斷音4大小絲給予音輯錄之_，進而自朗音訊進行增 益控制。 為達上述之目的，本發明提供一種遠距收音裝置，包括至少-麥克風， 接收外部聲音；至少一號角收音器’其設於麥克風之前端，增加麥克風之 收音指向性；以及-自動增錄麵組，其設轉克財或—主機中，依 據麥克風所接收之外部聲音之音4大小進行音訊增益。 本發明提供另一種遠距收音裝置，包括：複數麥克風，排列成一曲型 麥克風陣列，用以接收外部聲音；以及—自動增益控制模組，其設於麥克 風中或-域巾’依據麥克風所接收之外部聲音之音量大小進行音訊增 益此曲型麥克風陣列中之每一麥克風亦可加裝一號角收音器使指向性效 果加成。 底下藉由具體實施例詳加制，當更容純解本發明之目的、技術内 谷、特點及其所達成之功效。 【實施方式】 本發明提供一種遠距收音裝置，用以將收音裝置如麥克風之收音距離 拉長、提高高頻音訊、抑制環聽音、豐富語音特徵且錢更換新的麥克 風。 本發明遠距收音裝置之結構之第—實施例如第丨_示，包括一麥克 201246949 風ίο、至少一號角收音器12及一自動增益控制模組14，其中號角收音器 12設在麥克風10之前方，麥克風1〇接收外部聲音，包含目標語音及環境 噪音，而號角收音器12由於廣口之形狀特徵，可增加麥克風⑴收音之指 向性並抑概境噪音；自動增益控纖組M —域16巾，依據麥克風1〇 所接收之外部聲音之音量大小，比對—統計曲線找出最適當的增益值，對 外部聲音進行音訊增益。本發明遠距收音裝置另有—第二實施例，如第2 圖所示，其係將自動增益控制模組14設於麥克風1〇中。 號角收音器12可提供麥克風1G與外界空氣間較好的阻抗匹配 ㈣ed_她h) ’細提高錢風㈣收音轉，但㈣遮蔽效紐 號角收音器只能在高頻時發揮作用^以下減級音器Η的各種聲學參數 推導，號角收音器12會滿足鶴_號角方程式，如下所示： dl dz2 4斗)2 ,(2)2-2《(啦"(2)201246949 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a money-face reading technology, and is a high-directivity long-distance radio device. [Previous technology] Press, people's «in a fresh and universal way through the language, (four) with the help of additional tools to hide each other's money, and the sound of the sound can be compared to (four) capacity to record, but this recording radio Depending on the distance between the user and the radio (such as a microphone), the sound recognition effect will be worsened as the distance between the two is farther away. At present, the general-like side of the _ (four) side m she applied to the close range, the charm - can detect the device of the far-sounding sound, which is a major limitation in the voice interaction, (four) 1 can not cope with all the needs of today; relative to close range Voice, long-distance radio will be greatly reduced due to the interference of the brothers in the "speaking voice, f murmur and other factors, and greatly reduce the green identification (four) (four) (10) coffee, _ handsome face, and the system needs to automatically adjust the microphone gain at different distances Therefore, the number of difficulties is increased. Therefore, this handsome coffee-Nenizaki set, shouting the social statement, to reach the ring = _ sound can stay in the voice of the new year, with mixed structure and the actual financial style will be detailed below. SUMMARY OF THE INVENTION The device is equipped with a directional microphone attached to the front end of the microphone, and can be increased in height. The main purpose of the present invention is to provide a long-distance radio horn to receive a H 'to make the original money become There is no need to change the microphone with the finger frequency θ ' 丰 。 。 。 。 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 a curved microphone _ to strengthen the collection The directionality of the sound achieves the function of suppressing environmental noise. The re-purpose of the present invention is to provide a remote sound receiving device, which is a pre-designed statistical curve determining sound 4 size wire given to the sound recording, and then For the purpose of the above, the present invention provides a remote radio device comprising at least a microphone for receiving external sound; at least one horn radio set is provided at the front end of the microphone to increase the radio directionality of the microphone; - an automatic add-on quilt, which is set to turn the audio gain according to the size of the external sound 4 received by the microphone. The present invention provides another remote radio device, including: a plurality of microphones arranged in a track a microphone array for receiving external sound; and an automatic gain control module, which is disposed in the microphone or - the domain towel 'according to the volume of the external sound received by the microphone for audio gain, each of the curved microphone arrays The microphone can also be equipped with a one-horn radio to add a directional effect. The bottom is added by the specific embodiment. The object of the present invention, the characteristics of the technology, the characteristics, and the effect achieved by the present invention are provided. [Embodiment] The present invention provides a remote sound collecting device for lengthening the sound receiving distance of a sound receiving device such as a microphone and increasing the high frequency. Audio, suppressing ring listening, enriching voice features and replacing a new microphone. The first embodiment of the structure of the remote radio device of the present invention includes, for example, a microphone 201246949 wind, at least a horn radio 12 and a The automatic gain control module 14 is provided with a horn radio 12 disposed in front of the microphone 10, the microphone 1 〇 receiving an external sound, including target speech and ambient noise, and the horn radio 12 can increase the microphone (1) by the shape of the wide mouth. Directivity and noise reduction; automatic gain control fiber group M - domain 16 towel, according to the volume of the external sound received by the microphone 1 ,, the comparison - statistical curve to find the most appropriate gain value, the external sound Audio gain. In the second embodiment, as shown in FIG. 2, the remote gain control module 14 is disposed in the microphone 1A. The horn radio 12 can provide better impedance matching between the microphone 1G and the outside air (4) ed_ she h) 'finely improve the money wind (four) radio, but (4) cover effect horn radio can only play at high frequency ^ below The various acoustic parameters of the leveler 推 are derived, and the horn loudspeaker 12 will satisfy the crane _ horn equation as follows: dl dz2 4 bucket) 2 , (2) 2-2 "(啦 "(2)
C jHz)p(z) (1) 其中S為號角收音器的載面積，z為號角收音器的轴向。在解這個方程式時， 先假設以下條件成立： 、 4<S(z)2 (Z)-叫2)1^2) =，2 (m 為常數） 將(2)式代入(1)式，可得： ¢/2 ( 2 Ν' ^Τ+7)\[^)ρ(^]=〇 如果上面的式子要有解’必軸積s滿足下列條件： 5 201246949 5(ζ) = ·5γ 1+ =ST [cosh mz + M sinh mzf for w > i for. (4) 根據不同的參數M與m，可定義出四種管型的號角收音器，下表一為 四種號角收音器之參數表，第3圖為四種號角收音器之曲線圖，包括圓錐 狀（conical)、懸垂曲面（caten〇idal)、指數狀（exp〇nential)及雙曲面狀 (hyperbolic)等四種管型。 圓錐狀 懸垂曲面 指數狀 雙曲面狀 m=0 m>0 且 M=0 m>0 且 M=1 m>0 且 〇<Μ<1 表一 這四種稱為Salmon’s family的號角收音器可解出下列的聲壓： 自動增益控制模組之作用在於倘若麥克風距離目標聲源太遠，會造成 音訊過於薄弱而導致後處理_難；反之’距離太近則會出現溢位 (overflow)的狀況，為了解決此問題，本發明依照麥克風所收的音量來決 定增益值’先设計-種統計曲線（static curve)，如第4圖所示為-個統計 曲線之實施例’利用此統計曲線決定在音量為多少時該給音訊多少的增益。 本發明另提供-種遠距收音裝置之第三實施例，如第5圖所示，其係 將複數麥歧10制成_曲游錢陣列（(Wd CMA)，可再加強麥克風陣列的指向性，達到抑制環境雜訊功能曲型麥克 風陣列之其可為賴線或_㈣線，若將此·麥克風陣列之 p(z) STs(z) 1/2 [Pae' + ΡΘ Ύζ (5) 201246949 焦點對準侧者的所在方向，即可達琳卩㈣界雜訊干擾 ’進一步提升收 曰效果，此外转一自動增益控制模組（圖中未示）言史於每一麥克風1〇 中’或設於-主機中接收所有麥克風1〇的聲音，並依據麥克風1〇所接收 之外部聲音之音量大小進行音訊增益4 6A _全指向性麥克風之指向性 示意圖’第6B圖則為具指向性麥克風之指向性示意圖。 本發月所提供種遠距收音裝置係於麥克風前端設置一號角收音器以 提高麥克風之收音鱗、歧將概錢顯舰_麥歧陣列以加強 收音指向性’ _型麥克風_中之每—麥克風皆可裝設號角收音器，將 收音範_大至五公尺、甚至十公尺以上，朗遠距收音之目的，若因麥 克風距離聲源目標域或域，錢音訊太域太小，财㈣提供之自 動增益控讎料尊克職音之音量絲職織，目此，姉於先前 技術中近_德纽果㈣，树明舰⑼蹄料置可自動調適麥 克風音量、藉瓣㈣㈣㈣刚载物m得到良好的 遠距收音品質。 唯以上所述者，僅為本發明之較佳實施例而已，並非用來限定本發明 實_^ _ 職瞻蝴 或修飾’均應包括於本發明之申請專利範圍内。 【圖式簡單說明】 第1圖為本發明遠靴音裝置之第―實施例之示意圖。 第2圖為本發明遠職音裝置之第二實侧之示意圖。 第3圖為四種管型之號角收音器對應之曲線圖。 第4圖為一個統計曲線之實施例曲線圖。 7 201246949 第5圖為本發明遠距收音裝置之第三實施例之示意圖。 第6A圖為全指向性麥克風之指向性示意圖。 第6B圖為具指向性麥克風之指向性示意圖。 【主要元件符號說明】 10麥克風 12號角收音器 14自動增益控制模組 16 主機 8C jHz)p(z) (1) where S is the carrying area of the horn loudspeaker and z is the axial direction of the horn loudspeaker. In solving this equation, first assume that the following conditions are true:, 4 < S(z) 2 (Z) - call 2) 1 ^ 2) =, 2 (m is a constant) Substituting (2) into (1), Available: ¢/2 ( 2 Ν' ^Τ+7)\[^)ρ(^]=〇 If the above formula has a solution 'the necessary axis product s satisfies the following conditions: 5 201246949 5(ζ) = · 5γ 1+ =ST [cosh mz + M sinh mzf for w > i for. (4) According to different parameters M and m, four types of horn loudspeakers can be defined, and the following table shows four horn radios. The parameter table of the device, the third picture shows the graph of the four horn radios, including conical, caten〇idal, exp〇nential and hyperbolic. Tube type. Conical overhanging surface exponential hyperboloid m=0 m>0 and M=0 m>0 and M=1 m>0 and 〇<Μ<1 Table 1 These four horns called Salmon's family The sounder can solve the following sound pressures: The function of the automatic gain control module is that if the microphone is too far away from the target sound source, it will cause the audio to be too weak and cause post-processing _ difficult; otherwise, if the distance is too close, overflow will occur (overflow ) In order to solve this problem, the present invention determines the gain value according to the volume received by the microphone. The first design is a static curve. As shown in FIG. 4, the embodiment of the statistical curve uses the statistic. The curve determines how much the gain is given to the audio when the volume is. The present invention further provides a third embodiment of the remote radio device, as shown in Fig. 5, which is to make the plural maiqi 10 The array ((Wd CMA) can reinforce the directivity of the microphone array to achieve the suppression of the ambient noise function. The curved microphone array can be a line or a _ (four) line. If this is the p(z) STs of the microphone array ( z) 1/2 [Pae' + ΡΘ Ύζ (5) 201246949 Focus on the direction of the side, you can reach the noise of the four (four) boundary noise interference to further improve the receiving effect, in addition to an automatic gain control module ( Not shown in the figure) History of each microphone 1' or set to - the host receives all the microphones 1 ,, and according to the volume of the external sound received by the microphone 1 进行 audio gain 4 6A _ omnidirectional Sexual microphone directional diagram '6B It is a directional diagram of a directional microphone. The remote radio receiver provided in this month is equipped with a horn radio at the front end of the microphone to improve the microphone's radio scale, and the ambiguity will be enhanced. The directional ' _ type microphone _ each of the microphones can be equipped with a horn radio, which will be a wide range of _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Domain or domain, money audio too domain is too small, Cai (4) provides the automatic gain control material, the volume of the Zunke tone, the purpose of this, in the prior art near _ De Nuo (four), Shu Ming ship (9) hoof The material can automatically adjust the microphone volume, and use the flap (4) (4) (4) to get the good long-distance radio quality. The above is only the preferred embodiment of the present invention, and is not intended to limit the invention. It is intended to be included in the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a first embodiment of a distal-sound sound device of the present invention. Figure 2 is a schematic view of the second real side of the far-end sound device of the present invention. Figure 3 is a graph corresponding to the horn loudspeakers of the four tubular types. Figure 4 is a graph of an embodiment of a statistical curve. 7 201246949 Fig. 5 is a schematic view showing a third embodiment of the remote sound pickup device of the present invention. Figure 6A is a schematic diagram of the directivity of the omnidirectional microphone. Figure 6B is a schematic diagram of the directivity of a directional microphone. [Main component symbol description] 10 microphone 12-horn radio 14 automatic gain control module 16 host 8