TW413995B - Method and system for enhancing the audio image created by an audio signal - Google Patents
Method and system for enhancing the audio image created by an audio signal Download PDFInfo
- Publication number
- TW413995B TW413995B TW87108489A TW87108489A TW413995B TW 413995 B TW413995 B TW 413995B TW 87108489 A TW87108489 A TW 87108489A TW 87108489 A TW87108489 A TW 87108489A TW 413995 B TW413995 B TW 413995B
- Authority
- TW
- Taiwan
- Prior art keywords
- signal
- input
- output
- adjustment
- adder
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S1/00—Two-channel systems
- H04S1/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
Abstract
Description
413T Α7 五 f 1明（9) 而在第1圖之特別组態並不能提供單音軌信號（亦 及第二系統輸入之輸入相同的信號）之自動 而第4圖之系統則可以。這是因為本發明包 括一含一加法器130之第二調節信號線130，其輸入為 第一及第二調節信號，其輸出則為等於第一及第二輸入 信號相加線和之加線信號’一低帶通濾波器η 6，其輸 入為加線信號’其輸出則饋入可變增益裝置及全通濾波 器118’其輸出為可變增益裝置119之輸出，即加總信 號之放大版’且其輸出為第二調節信號。第二調節信 號繪示為⑴附加到第一調節信號及在加法器113之第 尸^調節信號總和’其輸出則績入第一系統輸出1 〇5，及 )附加到位於加法器114之第一調節信號，其輸出則在 法器108自第二輸入信號減去，其輸出饋入第二系統 出1〇9。實際上，第二調節信號是加到第一輸入信 ’並自第二輸入減去，與第一調節信號方式相同。因 此，加法器104及113可為一有三個正輸入（第一輸入信 號，第一調節信號，及第二調節信號）之單一加法器，及 加法器114,且減法器1〇8可為一含一單一正輸入（第二 輸入信號）及兩個負輸出（第—及第二調節信號）之單一 減法器。從別角度看，第一及第二調節信號相加後形成 一「超級」調節信號’被加到第一輸入信號以產生第一 輸出信號並自第二輸入信號減去後以產生第二輸出信 號。 全通渡波器在有單音軌信號時可產生—梳形濾波413T Α7 5 f 1 Ming (9) The special configuration in Figure 1 does not provide automatic single-track signal (the same signal as the input of the second system input) and the system in Figure 4 can. This is because the present invention includes a second adjustment signal line 130 including an adder 130, whose inputs are the first and second adjustment signals, and whose output is equal to the sum of the first and second input signal sum lines. The signal 'a low band-pass filter η 6 whose input is a line-added signal' whose output is fed to a variable gain device and an all-pass filter 118 'whose output is the output of the variable gain device 119, that is, the sum of the signals Amplified version 'and its output is a second adjustment signal. The second adjustment signal is shown as the sum of the first adjustment signal and the sum of the first adjustment signal in the adder 113, and its output enters the first system output 105, and) is added to the first adjustment signal in the adder 114. An adjustment signal whose output is subtracted from the second input signal at the amplifier 108, and its output is fed into the second system to output 109. Actually, the second adjustment signal is added to the first input signal and subtracted from the second input signal in the same manner as the first adjustment signal. Therefore, the adders 104 and 113 can be a single adder with three positive inputs (a first input signal, a first adjustment signal, and a second adjustment signal), and the adder 114, and the subtractor 108 can be a Single subtractor with a single positive input (second input signal) and two negative outputs (first and second adjustment signals). From another perspective, the first and second adjustment signals are added to form a "super" adjustment signal, which is added to the first input signal to generate a first output signal and subtracted from the second input signal to generate a second output. signal. Full pass wave generator can be generated when there is a single track signal—comb filtering
經 中 標 準 局 員 工 消 費 合 η 社 印 袈Consumption of staff and workers of the Bureau of Standards and Accreditation
本紙張m物财料（CNS (210x297公釐） (請先閲讀背面之注意事項再填寫本頁) 訂. 413995 ΛΤ B? 五、發明説明（！） —~ ~" 發明背景 發明領域 ------;---〆-- X - 广錆先閲讀背面之注意事項存填寫本寅) 本發明有關一自動聲音影像增強之方法及裝置’其 中對應聲音信號之電子信號經電子處理，使聽者感受音 樂及聲音之加強。本發明亦可搭配播放自一廣播信號之 音樂及聲音’或播放預先錄製（例如於卡帶、録射碟、唱 片或其他媒質）之音樂及聲音，以達到後製作的增強效 果’或搭配錄音或廣播之錄製或混合中音聲。本發明可 搭配使用於單音轨（monaural)或立體（stereo)音源，以合 成一近乎立體音響效果或將立體音響場台中以外的感 受音源位置定位。 先前技術 先前技術不竭餘力於標準立體音響系統（即，雙喇 0八或音箱系統）之研發，以自一單音軌音源及/或音源感 受位置合成一似立體音響的效果，不論是源自一單音軌 或一立體聲音信號，似乎都像來自兩立體喇叭之間以外 的位置。顯然，製作一來自一聽者周圍不同位置之音源 所獲致的效果可利用適當組合具有三個，四個或更多的 經濟部中央標準局員工消費合作社印聚 音頻頻道及對應之音箱系統。然而大多數音響系統的使 用者均為家庭用戶，不是無法負擔具有三個以上音頻及 音箱系統的費用，就是沒有足夠空間容納多於二個音箱 的系統。因此，廠商竭心盡力於雙音道’雙音箱系統之 開發。 透過雙音箱系統自單聲音信號合成類似立體音響 本紙張尺度適用準(CNS)八4規格（21髮) 413995Material of this paper (CNS (210x297 mm) (Please read the notes on the back before filling out this page) Order. 413995 ΛΤ B? V. Description of the Invention (!) — ~ ~ &Quot; Background of the Invention Field of Invention- ----; --- 〆-- X-Canton first read the notes on the back and fill in the book) The method and device for automatic sound and image enhancement according to the present invention, wherein the electronic signal corresponding to the sound signal is processed electronically, Make listeners feel the enhancement of music and sound. The present invention can also be used to play music and sound from a broadcast signal 'or play pre-recorded music and sound (such as on a cassette, video disc, record, or other media) to achieve post-production enhancement effects' or with recording or Broadcast recording or mixing of alto sound. The invention can be used with a mono track (monaural) or stereo (sound) sound source to synthesize a near stereo sound effect or locate the position of the sound source outside the stereo sound field. Prior technology The previous technology spared no effort in the research and development of standard stereo systems (ie, dual speakers or speaker systems) to synthesize a stereo-like effect from a single-track sound source and / or sound source perception location, regardless of the source From a single audio track or a stereo sound signal, it seems that it comes from a location other than between the two stereo speakers. Obviously, the effect obtained by making a sound source from different locations around a listener can be used in an appropriate combination to have three, four or more printed audio channels and corresponding speaker systems from the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. However, most audio system users are home users. Either they cannot afford the cost of more than three audio and speaker systems, or they do not have enough space to accommodate more than two speakers. Therefore, manufacturers are making every effort to develop the dual-channel 'dual speaker system. Synthesizing similar stereo sound from a single sound signal through a dual speaker system This paper is suitable for standard (CNS) 8-4 specifications (21 rounds) 413995
五、發明說明（9 同。然而在第1圖之特別組態並不能提供單音軌信號（亦 即，於第一及第二系統輸入之輸入相同的信號）之自動 聲音強化，而第4圖之系統則可以。這是因為本發明包 括一含一加法器1丨5之第二調節信號線n〇，其輸入為 第一及第二調節信號，其輸出則為等於第一及第二輸入 信號相加線和之加線信號，一低帶通濾波器116，其輸 入為加線信號，其輸出則饋入可變增益裝置及全通濾波 器118,其輸出為可變增益裝置117之輸出，即加總信 號之放大版，且其輪出為第二調節信號。第二調節信 號繪示為⑴附加到第一調節信號及在加法器113之第 一調節信號總和，其輸出則饋入第一系統輸出1〇5，及 (ii)附加到位於加法器114之第一調節信號，其輸出則在 減法器108自第二輸入信號減去，其輸出饋入第二系統 輸出109。實際上，第二調節信號是加到第一輸入信 號，並自第二輸入減去，與第一調節信號方式相同。因 此，加法器104及113可為一有三個正輸入(第一輸入信 號，第一調節信號，及第二調節信號）之單一加法器，及 加法器114,且減法器108可為一含一單一正輸入（第二 輸入仏號）及兩個負輸出（第一及第二調節信號）之單一 減法器。從別角度看，第一及第二調節信號相加後形成 一「超級」調即仏號，被加到第一輸入信號以產生第一 . 輸出信號並自第二輸入信號減去後以產生第二輸出信 號。 ° 全通濾波器在有單音轨信號時可產生一梳形濾波 (請先閱讀背面之注意事項再填寫本頁) 裝·-------訂--K--l· I---線 經濟部智慧財產局員工消費合作社印製 13 413995 Λ7 Η 7 五、發明説明（2 ) (請先閲讀背私之注"-事項再填寫本頁) 效果之方法與系統，其一範例曾揭露於1963年出版之 英國專利第942,459號。透過雙音箱系統自聽者周圍任 何一個位置之單長軌音源之視在（apparent)位置之方法 與系統，其一範例曾揭露於1980年柯格（Kogure)等人之 美國專利第4,219,696號。 用以增強由立體聲音信號代表之視在擴散音源之 方法或系統，其範例見諸於1981年核發予柯思（c〇hen) 之美國專利第4,3〇8,423號及1983年核發予司馬（Shima) 等人之美國專利第4,394,536號。 尤其是達成悅耳聲音影像增強效果之方法及系統 見諸於1995年核發予狄士柏（Desper)之美國專利第 5,412,731號，及由狄士柏送審申請美國專利系列號 08M64/669號’以上兩者’均由狄士柏產品公司所擁有。 該發明將於本文說明。美國專利第5,412,731號及美國 專利系列號08/464/669號在此附上做為參考。 經濟部中央標準局員工消費合作社印製 前述方法與系統採用下列以各方式及組合之方法 獲致所需之增強音頻效果：將一單音軌信號分成兩個獨 立之頻道信號並藉延遲相位移動、頻率等量化（frequenCy contouring ’或「等頻j )及/或以與另一頻率修改之信號 不同方式改變信號強度來修改此一信號，或自另一個減 去一組其中之一輸入立體聲信號並然後延遲、相位移 動'頻率等量化及/或放大相對於該輸入立體聲信號之差 異信號’然後將修改之差異信號加到輸入立體聲信號， 該之輸入立體聲信號在求得差異信號後變成被減數，並 本紙張尺度適用中國國家標準{ CNS ) Α4規格（21〇Χ297^>釐） Λ7 413995 五、發明説明（3 ) 自另一個輸入立體聲信號減去修改之差異信號以形成 新的第一及第二輪出信號。 藉由新的第一及第二輸出信號對其強度延遲、相位 移動及頻率等量之新差異，以及藉由刪除「交互談話」 (cross-talk)(亦即’將聽者右耳之左頻道信號與右頻道信 號混合，及將聽者左耳之右頻道信號與左頻道信號混 合）’聽者感受一「聲頻錯覺」（audio illusion)，一單音 軌信號成為一立體信號或有聲音或「籠罩」聽者一聲音 位於除在或介於兩立體音箱之聲音系統以外的位置。 如前所述，揭露於美國專利第5,412,731號及美國 專利系列號08/464/669號可獲致相當悅耳的結果。在此 揭露其中之一實施例已獲狄士柏產品公司授權併入積 體電路（ICs)内。第1圖顯示其一之1C電路。第1圖所 示所有元件除電容及介於第Π及第17導線之電阻以 外’均置入（embedded)於1C内。（1C之導線編號以下圖 示之。） 該1C之電路說明如下。與第1圖電路圖示電路相 同部分均標示相同。左頻道及右頻導輸入信號Lin及Rin 分別接系統第1及19導線。Rin在做為減法器之Amp 1 位置減去Lin。Amp 1之輸出（Lin - Rin)即饋入由一包含 連接1C導線16及18之内電阻及連接1C相同導線外電 阻組成之RC細格形成之帶通（bandpass)濾波器。帶通濾 波器之尖峰回應為500 Hz(赫茲），以每八度音6分貝（db) 轉動。帶通滤波器亦引入一延遲到（Lin - Rin)信號。濾波 本紙張尺度適用中國國家標準（CNS ) A4規格（2ΚΓΧ297公楚} (請先閲讀背'面之注t事項再填寫本頁) 丁 經濟部中央標準局員工消费合作社印掣 Λ7 413995 五、發明説明（4 ) 及延遲之差異信號（以下以「C」表示）即通過壓控放大器 (VCA)並在做為加法之Amp 3位置加到輸入信號Lin，以 使在導線3之系統左頻道輸出Lout成為Lin + C。在做 為一減法器之Amp 4位置，自輸入信號Rin減去信號c， 使在導線5之系統右頻道輸出Rout成為Rin - C。Lout 及Rout均饋回系統由RMS(均方根）偵測器RMS 1及 RMS2組成之飽和偵測電路。在RMS 1之輸入處，Lout 及Rout相加，在RMS 2之輸入處，則R0ut .自Lout減去。 RMS 1及RMS 2之輸出均饋入差動放大器Amp 7，其輸 出則調節VCA。 本系統提供音頻「影像增強」到一立體聲信號β以 範例說明’假如聽者在其他方面均為含附加1C的兩頻 道’雙音箱之立體聲系統的樂團音樂演奏，聽者會感受 周身被樂團設備沒一穿過兩音箱之弧形配置包圍，其中 一些設備設於他的左邊，一些設於右邊，而不是只有樂 團在他面前。 經濟部中央標準局員工消費合作社印笨 景^像加強是由被認為一調節信號之c信號完成。透 過RMS偵測器電路調節反饋電路可避免立體聲信號被 「過度增強」，例如在原始素材已經增強過。此外，增 強的量聽者亦可調整在導線13之電位計控制。若電位 計之弧刷設定接地，則VCA未通過任何的調節信號， 且Lout = Lin而且R0ut = Rin，亦即，音響節目是是在 未增強之情況被收聽。當弧刷遠離接地時，增強效果即 本紙張尺度適用中 經濟部中央標準局負工消費合作社印製 413995 五、發明説明（5) 上文說明之1C組態為接收一立體聲信號，或者至 少’其組態為用以接收與右輸入信號不同之左IS。如第 1圖所示，當1C接收單音軌信號，則左右之輸入信號相 同，聲音並沒有增強。 然而’ 1C之外接點可以改變，使聲音增強效果， 亦可應用於單音軌信號。在此一實施例，如第2圖所示， 1C之左右輸入透過一平衡控制（或攝全景panning)電位 計彼此連接到一單音軌信號源，其他電器則相同。 在另一實施例’如第3圖所示，左右輸入彼此直接 連接到一單音轨信號源，飽和偵測電路則關閉。調節信 號將自接地與右頻道輸出（亦即，基本上源自一 Rin)之單 音軌信號之間的差異’該輸出通過帶通濾波器及含一固 定增加度之放大器。調節信號即加到左頻道輸入信號以 形成左輸出信號’意減的調整信號即自右頻道輪入信號 刪減’以形成右輸出信號。V. Description of the invention (9 is the same. However, the special configuration in Fig. 1 does not provide automatic sound reinforcement for single-track signals (that is, the same signal input to the first and second systems), and the fourth The system shown in the figure is ok. This is because the present invention includes a second adjustment signal line n0 containing an adder 1 丨 5. The input is the first and second adjustment signals, and the output is equal to the first and second adjustment signals. The input signal sum line and the addition line signal, a low band-pass filter 116, whose input is a line-added signal, and whose output is fed to a variable gain device and an all-pass filter 118, whose output is a variable gain device 117 The output is an enlarged version of the summed signal, and its rotation is the second adjustment signal. The second adjustment signal is shown as the sum of the first adjustment signal added to the first adjustment signal and the first adjustment signal in the adder 113, and the output is The first system output 105 is fed, and (ii) is added to the first adjustment signal located in the adder 114, and its output is subtracted from the second input signal at the subtractor 108, and its output is fed to the second system output 109. In fact, the second adjustment signal is added to the first The input signal is subtracted from the second input in the same way as the first adjustment signal. Therefore, the adders 104 and 113 can have three positive inputs (the first input signal, the first adjustment signal, and the second adjustment signal). A single adder, and an adder 114, and the subtractor 108 may be a single subtractor with a single positive input (the second input sign) and two negative outputs (the first and second adjustment signals). From a perspective, the first and second adjustment signals are added to form a "super" key, that is, a 仏 sign, which is added to the first input signal to generate a first. The output signal is subtracted from the second input signal to generate a second. Output signal. ° All-pass filter can generate a comb filter when there is a single track signal (please read the precautions on the back before filling this page). Installation · ------ Order--K--l · I --- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 13 413995 Λ7 Η 7 V. Description of the invention (2) (Please read the note of indorsement and quotation before filling out this page) Method and system of effect , An example of which was disclosed in British Patent No. 942,459, published in 1963. A method and system for the apparent position of a single long-track sound source at any position around the speaker system from the listener, an example of which was disclosed in 1980 US Patent No. 4,219,696 to Kogure et al. Methods or systems for enhancing an apparently diffused sound source represented by a stereo sound signal are exemplified in U.S. Patent Nos. 4,308,423 issued to Cohen in 1981 and Shima issued in 1983 ) Et al. US Patent No. 4,394,536. In particular, the method and system for achieving a pleasing sound and image enhancement effect are described in US Patent No. 5,412,731 issued to Desper in 1995, and submitted for application by the US Patent series No. 08M64 / 669 'both above' are owned by Dispar Products. The invention will be described herein. U.S. Patent No. 5,412,731 and U.S. Patent Serial No. 08/464/669 are hereby incorporated by reference. The above-mentioned methods and systems are printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs in the following ways and combinations to achieve the required enhanced audio effects: a single audio track signal is divided into two independent channel signals, and by delaying phase shift, Frequency equalization (frequenCy contouring 'or "equal frequency j") and / or modify the signal strength by changing the signal strength differently from the signal modified by another frequency, or subtract one of the input stereo signals from the other and Then delay and phase shift 'frequency and other quantization and / or amplification of the difference signal with respect to the input stereo signal' and then add the modified difference signal to the input stereo signal. The input stereo signal becomes a subtracted number after the difference signal is obtained And this paper standard applies the Chinese National Standard {CNS) A4 specification (21〇 × 297 ^ > centi) Λ7 413995 V. Description of the invention (3) Subtract the modified difference signal from another input stereo signal to form a new first And the second round output signal. Delay, phase shift and frequency of the signal with the new first and second output signals New differences in volume, and by removing "cross-talk" (that is, 'mixing the left channel signal of the listener's right ear with the right channel signal, and mixing the right channel signal of the listener's left ear with the left channel (Signal mixing) 'the listener experiences an "audio illusion", a single track signal becomes a stereo signal or there is a sound or "covers" the listener-the sound is located in addition to or between the sound system of the two stereo speakers s position. As mentioned earlier, the disclosures in U.S. Patent No. 5,412,731 and U.S. Patent Serial No. 08/464/669 can yield quite pleasing results. It is disclosed here that one of the embodiments has been authorized by Dispar Products to be incorporated into integrated circuits (ICs). Figure 1 shows one of the 1C circuits. All components shown in Fig. 1 are embedded in 1C except the capacitor and the resistance between the Π and 17 wires. (The lead numbers of 1C are shown below.) The circuit of this 1C is explained below. The same parts as the circuit shown in Figure 1 are marked the same. The left channel and right pilot input signals Lin and Rin are connected to the 1st and 19th wires of the system, respectively. Rin subtracts Lin at the Amp 1 position of the subtractor. The output (Lin-Rin) of Amp 1 is fed into a bandpass filter formed by an RC grid consisting of an internal resistor connected to 1C wires 16 and 18 and an external resistor connected to the same wire of 1C. The band-pass filter has a peak response of 500 Hz (hertz), rotating at 6 decibels (db) per octave. The band-pass filter also introduces a delay to (Lin-Rin) signal. Filter This paper size is applicable to China National Standard (CNS) A4 specifications (2KΓ × 297). (Please read the note on the back side and fill in this page.) Ding Central Laboratories of the Ministry of Economic Affairs, Consumer Cooperatives Seal Λ7 413995 V. Invention The difference signal (4) and the delay signal (hereinafter referred to as "C") are added to the input signal Lin through the voltage-controlled amplifier (VCA) and at the Amp 3 position for addition, so that the left channel of the system on the conductor 3 is output Lout becomes Lin + C. At the position of Amp 4 as a subtractor, the signal c is subtracted from the input signal Rin, so that the system's right channel output Rout on line 5 becomes Rin-C. Both Lout and Rout are fed back to the system by RMS (Root Mean Square) Detector saturation detection circuit consisting of RMS 1 and RMS 2. At the input of RMS 1, Lout and Rout are added, and at the input of RMS 2, R0ut. Subtracted from Lout. RMS 1 and The output of RMS 2 is fed to the differential amplifier Amp 7, and the output is adjusted to VCA. This system provides audio "image enhancement" to a stereo signal β to illustrate 'if the listener is otherwise two channels with additional 1C 'Dual Speaker System The audience will feel that they are surrounded by the arc configuration of the orchestra's equipment without passing through the two speakers, some of which are located on his left and some on the right, instead of only the orchestra in front of him. Bureau of the Consumer Cooperative Consumers ’Benben scene enhancement is completed by the c signal considered to be an adjustment signal. Adjusting the feedback circuit through the RMS detector circuit can prevent the stereo signal from being“ over-enhanced ”, for example, the original material has been enhanced. In addition The enhanced volume listener can also adjust the potentiometer control on the lead 13. If the arc brush of the potentiometer is set to ground, VCA does not pass any adjustment signals, and Lout = Lin and Rout = Rin, that is, the audio program is It is listened to when it is not enhanced. When the arc brush is far away from ground, the enhanced effect is that this paper size is applicable for printing by the Central Standards Bureau of the Ministry of Economic Affairs and Consumer Cooperatives 413995 5. Description of the invention (5) 1C configuration described above To receive a stereo signal, or at least 'It is configured to receive a left IS different from the right input signal. As shown in Figure 1, when 1C receives a single For audio track signals, the left and right input signals are the same, and the sound is not enhanced. However, the contacts outside '1C can be changed to enhance the sound effect, and can also be applied to a single audio track signal. In this embodiment, as shown in Figure 2 The left and right inputs of 1C are connected to a single audio track signal source through a balance control (or panning) potentiometer, and other appliances are the same. In another embodiment, as shown in FIG. 3, the left and right inputs are directly connected to each other. Connected to a single-track signal source, the saturation detection circuit is turned off. The adjustment signal will be the difference between the ground signal and the single-track signal of the right channel output (ie, basically derived from a Rin). Pass filter and amplifier with a fixed increase. The adjustment signal is added to the left channel input signal to form the left output signal, and the adjusted signal is subtracted from the right channel turn-in signal to form the right output signal.
應/主意’所有組態均可不使用1C，例如採用分離 式類比組件。注意，該等組態可用於後製作之增強（亦 即，從一廣播之類接收或接收自播放系統如音樂碟播放 器’卡帶播放器及唱盤等聲音信號之增強）以及製作之增 強（亦即’立艎聲錄音於任何媒質或欲複製於一標準立體 聲系統之立體聲廣播之聲音信號的增強）。在該兩種情 況’聽者感受之聽覺幻覺則相同D 如第1至3圖所示之上述系統，其组態可增強一單 音軌信號或一立體聲信號組；但無法立即增強兩者，也 本紙張尺度適财闕家料< CNS )八4雜（2IOX297W ) ------.---P------.玎------ 1 - (請先聞讀背面之注意事項再填寫本頁) 413995 經濟部中央標準局員工消费合作社印製Response / Idea 'All 1C configurations can be used without 1C, such as using separate analog components. Note that these configurations can be used for post-production enhancements (that is, enhancements to sound signals received from a broadcast or the like from a playback system such as a music disc player's cassette player and turntable) and production enhancements (also That is, 'Li Sheng sound recorded on any medium or the enhancement of the sound signal of a stereo broadcast to be reproduced in a standard stereo system). In both cases, the auditory hallucinations experienced by the listener are the same. D The above-mentioned system shown in Figures 1 to 3 has a configuration that can enhance a single track signal or a stereo signal group; Also this paper size suitable for financial home materials < CNS) 8 4 miscellaneous (2IOX297W) ------.--- P ------. 玎 ------ 1-(please listen first (Read the notes on the back and fill in this page) 413995 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs
Λ7 HI 五、發明説明（6) ' ~ …、法將其中一者運用於一單一商用實施例，而不大量增 加其他電路及開關》 本發明之一目的為提供能自動增強單音轨信號及 組立體聲信號之聲而不必切換至不同組態的方法及 系統。 發明概要 本發明為一自動增強自一聲音信號產生之聲音影 像系統，該系統包括第一及第二信號線，每線均具有一 系統輸入及一系統輸出。該系統包括一含一減法器之第 一調節信號線，以在該第一信號線上之輸入刪減在第二 信號線上之輸入，及含一帶通濾波器，以藉頻率等量及 時間延遲差異信號獲得一第一調節信號。該系統包括一 含一加法器一第二調節信號線，將第一輸入信號線上之 ί§號加到第二輸入信號線上之信號以形成一加線信 號，然後透過所有的通路濾波器以產生一第二調節信 號。該系統尚包括一加法器’其輸入為該第一輸入信 號，該第一調節信號及該第二調節信號，並產生相加組 合傳送到一第一系統輸出。該系統亦括_減法器，其輸 出為在第二信號線上之輸入信號’其輸出等於在第二信 號線上以該第一調節信號減少及以該第二調節信號減 少之輸入，且其輸出傳達到該第二系統輸出。本發明亦 有關一達成一立體聲或單音轨信號之方法。 圖式簡單說明 第1圖為先前技術提供聲音影像增強到一組立體 (請先閱讀背和之注意事項再填寫本頁)Λ7 HI V. Description of the invention (6) '~…, one of them can be applied to a single commercial embodiment without adding a large number of other circuits and switches. One of the objects of the present invention is to provide a signal that can automatically enhance a single track and Method and system for grouping stereo signals without having to switch to a different configuration. SUMMARY OF THE INVENTION The present invention is an audio and video system for automatically enhancing a sound signal generated from a sound signal. The system includes first and second signal lines, each line having a system input and a system output. The system includes a first adjustment signal line including a subtractor to reduce the input on the first signal line to the input on the second signal line, and a band-pass filter to equalize the frequency and delay the difference. The signal obtains a first adjustment signal. The system includes a second adjusting signal line including an adder, and adding the § number on the first input signal line to the signal on the second input signal line to form a plus line signal, and then passing through all the path filters to generate A second adjustment signal. The system further includes an adder 'whose input is the first input signal, the first adjustment signal and the second adjustment signal, and generates an addition combination to be transmitted to a first system output. The system also includes a subtractor whose output is an input signal on a second signal line, whose output is equal to an input reduced on the second signal line by the first adjustment signal and decreased by the second adjustment signal, and its output communicates To this second system output. The invention also relates to a method for achieving a stereo or mono track signal. Brief description of the figure. Figure 1 provides the sound and image enhancement to a set of stereos in the prior art (please read the precautions before filling in this page)
r1T 線_ 本紙張尺度顧㈣贼料（CNS) Α4·(加㈣傻兹) ' 413995 Λ7 五、發明説明（7 ) ~" — 聲信號之電路概略圖。 第2圖為先前技術提供聲音影像增強到_單立勒^ 信號之電路概略圖。 第3圖為先前技術提供自動聲音影像增強到—單 音軌電路之電路概略圖。 第4圖為繪示本發明一實施例，提供自動聲音影像 增強到單音軌信號及立體聲信號組之方塊圖。 第5圖為繪示本發明一實施例’提供自動聲音影像 増強到單音軌信號及立體聲信號組之概略圖。 發明之詳細說明 本發明較佳實施例如所附圖式第4及5圖所繪示。 圖式中相同部分均標示相同之參考數字。 第4圖顯示本發明一較佳實施例1 〇 1之方塊圖。在 下列幾方面幾方面非常類似第1圖所示之電路。在第i 圖中所示之先前技術電路中具有一第一（或左）信號線， 包括有一左系統輸入裝置（左輸入緩衝器），一加法器以 加總結合含一信號線之第一（或左）輸入信號，及一第一 (或左）系統輸出（導線3)，本發明包括一第一（或左）信號 線1 〇2包括一第一（或左）輸入1〇3以接收一第一輸入信 號’ 一加法器104以總合含一輸入信號之調節信號以 及一第一（或左）系統輸出105以輪出該第一調節信號與 該第一輸入信號相加之結果。其中第1圖之先前技術具 有一第二信號線’包括一第二輸入系統（右輸入暫存器） 及一減法器以自該第二（或右）輸入信號及一第二（或右） (請先閱讀背面之注意事項再填寫本頁) ! 、-=φ 經濟部中央標隼局員工消費合作社印裝 本紙張尺度適财g)( CNS )^ϋ72Γ〇Χ29?ϋ^ ) Λ7 4139^5 五、發明説明（8) 系統輸出減去調節信號，本發明包括一第二（或右）信號 線106’ 一第二（或右）系統輸入1〇7以接收—第二輸入信 號，一減法器108以自該第二輸入信號及一第二（或右) 系統輸出109減去該第一調節信號，以輸出自該第二輸 入信號減去該第一調節信號之結果。在第1圖之先前技 術電路中，具有一減法器形成之調節信號線，自該第一 及第二系統輸入接收該第一及第二輸入信號，並自該第 一信號減去該第二信號，以產生一差動信號，以及一壓 控放大器’其輸入為延遲並等頻之差動信號，其輸出為 調節信號饋入在第一信號線之加法器及在第二信號線 之減法器，而第4圖所示之本發明則具有一第一調節信 號線包括減法器1 1 〇，其輸入分別為第一及第二系統輸 入103及1〇7之第一及第二輸入信號，其輪出為一差動 ^號等於減去第一輸入信號之第二輸入信號，一濾波 器裝置111’其輸入為差動信號’且其目的為藉位移其 相位藉時間延遲及/或頻率等量化，而修改該差異，一可 變增益裝置112，其輸入為該修改之差動信號，其輸出 為第一調節信號120’連接⑴到加法器1〇4，其第一調 節信號附加到常一輸入信號，其結果則透過加法器i 13 傳送到第一輸出裝置105,及（ii)透過加法器114傳送到 減法器108’其中第一調節信號自第二輸入信號減去後 再傳送到第二系統輸出1〇9。 一直到此，第1及第4圖之系統，兩者在提供立體 聲信號組之自動聲音增強方式非常類似，結果也大致相 本紙張尺度規格㈤j' ---------辦------訂------線- 1 (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標隼局員工消費合作社印製 _ 丨一r1T line_ This paper is a standard for papers (CNS) Α4 · (plus ㈣ silly) '413995 Λ7 V. Description of the invention (7) ~ " — Schematic diagram of the acoustic signal circuit. FIG. 2 is a schematic diagram of a circuit for providing sound and image enhancement to a single-signal signal in the prior art. Figure 3 is a schematic diagram of a circuit that provides automatic sound image enhancement to a single track circuit of the prior art. FIG. 4 is a block diagram illustrating an embodiment of the present invention that provides automatic audio and video enhancement to a single audio track signal and a stereo signal set. FIG. 5 is a schematic diagram showing an embodiment of the present invention, which provides an automatic sound and video signal that is strong to a single audio track signal and a stereo signal group. DETAILED DESCRIPTION OF THE INVENTION A preferred embodiment of the present invention is shown in Figures 4 and 5 of the accompanying drawings. The same parts in the drawings are marked with the same reference numerals. FIG. 4 shows a block diagram of a preferred embodiment 101 of the present invention. It is very similar to the circuit shown in Figure 1 in the following aspects. The prior art circuit shown in Fig. I has a first (or left) signal line, including a left system input device (left input buffer), an adder for summing the first line containing a signal line (Or left) input signal, and a first (or left) system output (conductor 3). The present invention includes a first (or left) signal line 1 02 including a first (or left) input 103 to Receive a first input signal 'An adder 104 combines the adjustment signal containing an input signal and a first (or left) system output 105 to round out the result of adding the first adjustment signal to the first input signal . The prior art of FIG. 1 has a second signal line including a second input system (right input register) and a subtractor to input signals from the second (or right) and a second (or right). (Please read the precautions on the back before filling out this page)!,-= Φ Printed paper size of the consumer cooperative of the Central Bureau of Standards of the Ministry of Economy g) (CNS) ^ ϋ72Γ〇Χ29? Ϋ ^) 7 4139 ^ 5 V. Description of the invention (8) The system output minus the adjustment signal. The present invention includes a second (or right) signal line 106 '-a second (or right) system input 107 for receiving-the second input signal, a The subtracter 108 subtracts the first adjustment signal from the second input signal and a second (or right) system output 109 to output a result of subtracting the first adjustment signal from the second input signal. In the prior art circuit of FIG. 1, there is an adjustment signal line formed by a subtractor. The first and second input signals are received from the first and second system inputs, and the second signal is subtracted from the first signal. Signal to generate a differential signal, and a voltage-controlled amplifier whose input is a delayed and equal-frequency differential signal, and whose output is an adjustment signal fed to the adder on the first signal line and the subtraction on the second signal line The invention shown in FIG. 4 has a first adjusting signal line including a subtractor 1 1 0, whose inputs are the first and second input signals of the first and second system inputs 103 and 107 respectively. , Its rotation is a second input signal with a differential ^ sign equal to minus the first input signal, a filter device 111 'its input is a differential signal' and its purpose is to shift its phase by time delay and / or The frequency is quantized, and the difference is modified. A variable gain device 112 has an input as the modified differential signal, and its output is a first adjustment signal 120 ′ connected to the adder 104. The first adjustment signal is added Input signal to Changyi, the result It is transmitted to the first output device 105 through the adder i 13, and (ii) to the subtractor 108 ′ through the adder 114. The first adjustment signal is subtracted from the second input signal and then transmitted to the second system output 10. . So far, the systems in Figures 1 and 4 are very similar in the way they provide automatic sound enhancement for stereo signal groups, and the results are roughly the same as the paper specifications 尺度 j '--------- Office --- --- Order ------ line- 1 (Please read the notes on the back before filling out this page) Printed by the Employees' Cooperatives of the Central Bureau of Standards, Ministry of Economic Affairs 丨 丨
413T Α7 五 f 1明（9) 而在第1圖之特別组態並不能提供單音軌信號（亦 及第二系統輸入之輸入相同的信號）之自動 而第4圖之系統則可以。這是因為本發明包 括一含一加法器130之第二調節信號線130，其輸入為 第一及第二調節信號，其輸出則為等於第一及第二輸入 信號相加線和之加線信號’一低帶通濾波器η 6，其輸 入為加線信號’其輸出則饋入可變增益裝置及全通濾波 器118’其輸出為可變增益裝置119之輸出，即加總信 號之放大版’且其輸出為第二調節信號。第二調節信 號繪示為⑴附加到第一調節信號及在加法器113之第 尸^調節信號總和’其輸出則績入第一系統輸出1 〇5，及 )附加到位於加法器114之第一調節信號，其輸出則在 法器108自第二輸入信號減去，其輸出饋入第二系統 出1〇9。實際上，第二調節信號是加到第一輸入信 ’並自第二輸入減去，與第一調節信號方式相同。因 此，加法器104及113可為一有三個正輸入（第一輸入信 號，第一調節信號，及第二調節信號）之單一加法器，及 加法器114,且減法器1〇8可為一含一單一正輸入（第二 輸入信號）及兩個負輸出（第—及第二調節信號）之單一 減法器。從別角度看，第一及第二調節信號相加後形成 一「超級」調節信號’被加到第一輸入信號以產生第一 輸出信號並自第二輸入信號減去後以產生第二輸出信 號。 全通渡波器在有單音軌信號時可產生—梳形濾波413T Α7 5 f 1 Ming (9) The special configuration in Figure 1 does not provide automatic single-track signal (the same signal as the input of the second system input) and the system in Figure 4 can. This is because the present invention includes a second adjustment signal line 130 including an adder 130, whose inputs are the first and second adjustment signals, and whose output is equal to the sum of the first and second input signal sum lines. The signal 'a low band-pass filter η 6 whose input is a line-added signal' whose output is fed to a variable gain device and an all-pass filter 118 'whose output is the output of the variable gain device 119, that is, the sum of the signals Amplified version 'and its output is a second adjustment signal. The second adjustment signal is shown as the sum of the first adjustment signal and the sum of the first adjustment signal in the adder 113, and its output enters the first system output 105, and) is added to the first adjustment signal in the adder 114. An adjustment signal whose output is subtracted from the second input signal at the amplifier 108, and its output is fed into the second system to output 109. Actually, the second adjustment signal is added to the first input signal and subtracted from the second input signal in the same manner as the first adjustment signal. Therefore, the adders 104 and 113 can be a single adder with three positive inputs (a first input signal, a first adjustment signal, and a second adjustment signal), and the adder 114, and the subtractor 108 can be a Single subtractor with a single positive input (second input signal) and two negative outputs (first and second adjustment signals). From another perspective, the first and second adjustment signals are added to form a "super" adjustment signal, which is added to the first input signal to generate a first output signal and subtracted from the second input signal to generate a second output. signal. Full pass wave generator can be generated when there is a single track signal—comb filtering
經 中 標 準 局 員 工 消 費 合 η 社 印 袈Consumption of staff and workers of the Bureau of Standards and Accreditation
本紙張m物财料（CNS (210x297公釐） (請先閲讀背面之注意事項再填寫本頁) 訂. 413995 Λ7 ίΠ 經濟部中央標隼局員工消費合作社印製 五、發明説明（10 ) 器效應’以提供一類似立體聲之效果。因 口此’即在只有 單音軌信號’只用-單-電路在-立體聲信號接收後接 收的單音軌信號亦可自動將聲音加強，而不用另外加裝 開關或做其他調整。 本發明可達到無法賤的良效。以_立體聲信號組 所得增強結果不僅可達第1圖電路達成之空間擴展特佳 效果外，亦可達到幾乎全通立體聲信號組所含之單音執 信號之增強效果。總合之效果出奇地悅耳。而且，發明 人發現’在全通濾波器118為全通遽波器的第三階時， 效果更是令人振奮。 應注意者’本發明之電路是對稱型，否則在只有單 音軌輸入時會喪失一些頻率。 第5圖為本發明另一較佳實施例之概略圖^本實施 例可施用於使用一單一半導體晶片或分離式類比組 件。在第5圖中，電路200具有兩系統輸入，201及 202 ’以分別對應左輸入及右輸入。該等輸入分別輸入 緩衝器203及204相通。在輸入緩衝器203之輸入信號 通到兩~運作放大器，即放大器205及206，並通到加法 器及低通濾波器207。在輸入緩衝器204之輸入通到兩 運作放大器，即運作放大器206及208，並通到加法器 及低通濾波器207。左及右輸入信號則在放大器206彼 此相減，以左輸入信號做為被減器，右輸入信號做為減 數’以在放大器之輸出產生差動信號L-R。該差動信號 則傳送到電位器209，以透過由傳統式電容及電阻網路 -__ 1 鑄 本紙張尺度適用中國國家標準（CNS ) A4现格（2!〇X 297公梦―） I. 訂 線* 1 f請先閱讀背面之注意事項再镇{^本頁) 經濟部中央標準局員工消費合作社印装 413995 Λ7 ___._ Η 7 五、發明説明（u) ~~ " 組成之一帶通濾波器210傳導部分之差動信號。遽波 器210做為等頻差動信號L-R，且最好為具有每八音階 含6dB(分貝）之中央頻率為500 Hz。然而中央頻率會下 降約300 Hz到3，000Hz之範圍。濾波器210亦提供頻 率依附時間延遲到差動信號。帶通濾波器之輸出則饋 入放大器211之輸入。放大器211之輸出為第一調節信 號C1 ’第一調節信號C1則加到放大器205之第一（或第 二）輸入信號，並在放大器208(點A-A應視為共同短路） 自第二（或右）輸入信號減去。放大器205及208之輸出 則分別將第一（左）及第二（右）系統輸出212及213之聲音 增強。 除上述外’第一及第二（或左及右）輸入信號相加並 在加法器/低通濾波器207通過一低通濾波器以產生一 加總信號做為輸出。加總信號等於L+R並傳送到可變增 益放大器214’其輸出透過電位器215饋入到由電阻電 容及放大器網路組成之全通濾波器216。在最佳之實施 例，全通濾波器為第三階（order)全通濾波器《其輸出為 第二調節信號C2’與第一調節信號一樣，在放大器2〇5 加到第一輸入信號’並在放大器2〇8自第二輸入信號減 去。亦即’在第一（或左）系統輸出212之信號為Lin+ C1 +C2’而在第二（或右）系統輸出21;3之輸出為Rin_cl_ C2。在212及213之輸出然後傳送到⑴消費者音響裝 置’如立體音響’電腦，電視接收器等之功率放大器之 輸入’然後以平常方式到組配之揚聲器（或音箱），以配Material of this paper (CNS (210x297 mm) (Please read the notes on the back before filling this page) Order. 413995 Λ7 Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Description of Invention (10) Effect 'to provide a stereo-like effect. Therefore,' that is, when there is only a single track signal ', only the single track signal received after the stereo signal is received can automatically enhance the sound without the need for another Add a switch or make other adjustments. The present invention can achieve good results that can not be cheap. The enhancement result obtained by the _stereo signal group can not only achieve the special effect of space expansion achieved by the circuit in Figure 1, but also achieve almost all-pass stereo signals. The enhancement effect of the monophonic signal included in the group. The combined effect is surprisingly pleasing. Moreover, the inventor found that 'the all-pass filter 118 is the third order of the all-pass chirp, the effect is even more exciting It should be noted that the circuit of the present invention is symmetrical, otherwise some frequencies will be lost when there is only a single audio track input. Figure 5 is a schematic diagram of another preferred embodiment of the present invention ^ This embodiment can be applied Use a single semiconductor chip or a separate analog component. In Figure 5, the circuit 200 has two system inputs, 201 and 202 'to correspond to the left and right inputs, respectively. These inputs are connected to the input buffers 203 and 204, respectively. The input signal of the input buffer 203 is passed to two operation amplifiers, namely amplifiers 205 and 206, and to the adder and low-pass filter 207. The input of the input buffer 204 is passed to two operation amplifiers, namely operation amplifier 206 and 208, and pass to the adder and low-pass filter 207. The left and right input signals are subtracted from each other at the amplifier 206, the left input signal is used as the subtractor, and the right input signal is used as the subtractor to output at the amplifier. Generate a differential signal LR. The differential signal is transmitted to the potentiometer 209 to pass through the traditional capacitor and resistor network -__ 1 The size of the paper is applicable to China National Standard (CNS) A4 (2! 〇X 297) Public dream ——) I. Threading * 1 f Please read the notes on the back first {^ This page) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 413995 Λ7 ___._ Η 7 V. Description of the invention (u) ~ ~ " group The bandpass filter 210 differential signal conducting portion. The chirp wave generator 210 is used as an equal-frequency differential signal L-R, and preferably has a center frequency of 6 Hz (decibel) per octave at 500 Hz. However, the center frequency will fall in the range of approximately 300 Hz to 3,000 Hz. The filter 210 also provides a frequency dependent time delay to the differential signal. The output of the band-pass filter is fed to the input of the amplifier 211. The output of the amplifier 211 is the first adjustment signal C1. The first adjustment signal C1 is added to the first (or second) input signal of the amplifier 205, and the second (or Right) The input signal is subtracted. The outputs of the amplifiers 205 and 208 enhance the sound of the first (left) and second (right) system outputs 212 and 213, respectively. In addition to the above, the first and second (or left and right) input signals are added and passed through a low-pass filter in the adder / low-pass filter 207 to generate a total signal as an output. The summed signal is equal to L + R and transmitted to the variable gain amplifier 214 ', whose output is fed through a potentiometer 215 to an all-pass filter 216 composed of a resistor capacitor and an amplifier network. In the preferred embodiment, the all-pass filter is a third-order all-pass filter, whose output is the second adjustment signal C2 ′, which is the same as the first adjustment signal, and is added to the first input signal at the amplifier 205. 'And subtracted from the second input signal at amplifier 208. That is, 'the signal of the first (or left) system output 212 is Lin + C1 + C2' and the output of the second (or right) system 21; 3 is Rin_cl_ C2. The output at 212 and 213 is then transmitted to the input of a power amplifier of a consumer audio device such as a stereo, a computer, a television receiver, etc., and then to the matched speakers (or speakers) in the usual manner to match
本紙張尺度ϋ财g 料（CNS (請先閱讀背面之注意事項再填寫本頁) Λ. 經濟部中央標準局貝工消費合作社印製 413995 Λ7 ______ Β7 五、發明説明（i2 ) 合進行後製作之增強或（ii)專業化錄音設備之輸入以配 合製作中之增強。聽者或製作人，視情況，藉調整電位 器209215，控制附加增強之量。若電位器2⑽及215之 弧刷位於接地邊，則音聲節目，不論是立體聲或單音 執，所聽到的均是在未增強之機式，然而，若電位器2〇9 及215之弧刷分別調整到能互通或L_R信號及l+r信 號，聽者就感受到愈來愈多之附加空間增強及合成之立 體聲。現假定電位器設定於最高設定點，若系統輸入之 信號為單音軌則達到空間增強通常用一電路即可，因第 1圖所示的電路不能達到，但透過通過由加法器/低通濾 波器207，可變增益放大器214及全通濾波器216組成 之第二調節信號則仍可達到立體聲合成。 第5圖所示之電路基本上為分離式組件，精此技術 者視需要可將所有的或大多數的電路減至一單一矽晶 片。精此技術者若覺濾波器所用之電容若實裝於一晶片 太大’視需要亦可採用適宜之晶片印刷電路連接分離式 電容。 笨發明亦為一自動增強自一聲音信號產生之聲音 影像的方法》該方法包括下之步驟：自一立體聲信號組 或自一單音軌信號衍生第一及第二輸入信號，自該第一 輸入信號減去該第二輸入信號以求得一差動信號，透過 一帶通濾波器傳送該差動信號以取得一第一調節信 號’將該第一及第二輸入信號相加，並透過一低通濾波 器傳送以衍生一加總信號，透過一全通濾波器傳送該加 本紙張尺度顧中®CNS} A4gnx 297i|#} - P 訂 線I (請先閱讀背'&-之注意y項再填寫本頁) 413995 Λ1 ____— ______ Β" 五、發明説明（13) ^ ~ --- 總信號以取得-第二調節信號，將該第二調節”加到 該第一輸入信號及該第一調節信號，以取得一第一輪出 k號，並自該第：輸人信號減該第二調節信號及該第一 調節#號’以取得一第二輸入信號。 本發明已配合實施例說明，顯然精於本技術者仍可 就本發明多方修改諸多款式及實施例。範例說明中，所 有繪示實施例之調節信號均加到左頻道，並從右頻道減 去，其中右頻道是自左頻道減，以衍生差動信號。需要 的話’此種建構亦可相反，雖然電子界將遵照本文說明 之建構以統一，精此技術者仍可做其他修改，例如採用 電腦軟體等提供增強房路模式。當然本發明並不偈限於 揭露之實施例。本發明說明繪示之細節，步驟及要件配 置及使用精此技術者仍可多方修改而不離本發明之範 圍。 (請先閲讀背仏之注^事項再填寫本頁) - n^i 訂 經濟部中央標準局員工消费合作社印製 本紙張尺度適用中國國家標準（CNS > A4規格（210/ 297¾¾ ) 413995Material of this paper size (CNS (please read the notes on the back before filling this page) Λ. Printed by the Shellfish Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 413995 Λ7 ______ Β7 5. Produced after the combined description of the invention (i2) Enhancement or (ii) the input of professional recording equipment to match the enhancement in production. The listener or producer, as appropriate, adjusts the potentiometer 209215 to control the amount of additional enhancement. If the arc brushes of potentiometers 2⑽ and 215 are located If it is grounded, the audio program, whether it is stereo or mono, will be heard in an unenhanced mode. However, if the arc brushes of potentiometers 209 and 215 are adjusted to communicate or L_R signals, respectively And l + r signals, the listener will feel more and more additional spatial enhancement and synthesizing stereo sound. Now assume that the potentiometer is set at the highest set point, if the system input signal is a single audio track to achieve spatial enhancement, usually use a The circuit can be used, because the circuit shown in Figure 1 cannot be reached, but it can still be achieved through the second adjustment signal composed of the adder / low-pass filter 207, the variable gain amplifier 214, and the all-pass filter 216. Acoustic synthesis. The circuit shown in Figure 5 is basically a discrete component, and the skilled person can reduce all or most of the circuit to a single silicon chip if necessary. The skilled person will feel the capacitor used in the filter. If it is mounted on a chip that is too large, you can also use a suitable chip printed circuit to connect a separate capacitor if necessary. The stupid invention is also a method for automatically enhancing the sound image generated from an audio signal. The method includes the following steps: A stereo signal group or first and second input signals derived from a single track signal, subtracting the second input signal from the first input signal to obtain a differential signal, and transmitting the differential through a band-pass filter Signal to obtain a first adjustment signal, add the first and second input signals, and transmit through a low-pass filter to derive a total signal, and transmit the additive paper through an all-pass filter. ®CNS} A4gnx 297i | #}-P Thread I (please read the back '&-note the y item before filling out this page) 413995 Λ1 ____— ______ Β " V. Description of the invention (13) ^ ~ --- Total signal to get-Cap Adjust the signal, add the second adjustment "to the first input signal and the first adjustment signal to obtain a first round out k number, and subtract the second adjustment signal and the first from the first: input signal One adjusts the “#” to obtain a second input signal. The present invention has been described in conjunction with the embodiments. Obviously, those skilled in the art can still modify many styles and embodiments of the invention in various aspects. In the example description, all the embodiments are shown. The adjustment signals are added to the left channel and subtracted from the right channel, where the right channel is subtracted from the left channel to derive a differential signal. If necessary, 'this construction can also be reversed, although the electronics industry will follow the construction described in this article to Unified, the skilled person can still make other modifications, such as using computer software to provide enhanced room mode. Of course, the invention is not limited to the disclosed embodiments. The details, steps and requirements of the present invention and the configuration and use of this technology can still be modified in many ways without departing from the scope of the present invention. (Please read the note of backing ^ before filling in this page)-n ^ i Order Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs This paper size applies to Chinese national standards (CNS > A4 size (210 / 297¾¾)) 413995
五、發明說明（9 同。然而在第1圖之特別組態並不能提供單音軌信號（亦 即，於第一及第二系統輸入之輸入相同的信號）之自動 聲音強化，而第4圖之系統則可以。這是因為本發明包 括一含一加法器1丨5之第二調節信號線n〇，其輸入為 第一及第二調節信號，其輸出則為等於第一及第二輸入 信號相加線和之加線信號，一低帶通濾波器116，其輸 入為加線信號，其輸出則饋入可變增益裝置及全通濾波 器118,其輸出為可變增益裝置117之輸出，即加總信 號之放大版，且其輪出為第二調節信號。第二調節信 號繪示為⑴附加到第一調節信號及在加法器113之第 一調節信號總和，其輸出則饋入第一系統輸出1〇5，及 (ii)附加到位於加法器114之第一調節信號，其輸出則在 減法器108自第二輸入信號減去，其輸出饋入第二系統 輸出109。實際上，第二調節信號是加到第一輸入信 號，並自第二輸入減去，與第一調節信號方式相同。因 此，加法器104及113可為一有三個正輸入(第一輸入信 號，第一調節信號，及第二調節信號）之單一加法器，及 加法器114,且減法器108可為一含一單一正輸入（第二 輸入仏號）及兩個負輸出（第一及第二調節信號）之單一 減法器。從別角度看，第一及第二調節信號相加後形成 一「超級」調即仏號，被加到第一輸入信號以產生第一 . 輸出信號並自第二輸入信號減去後以產生第二輸出信 號。 ° 全通濾波器在有單音轨信號時可產生一梳形濾波 (請先閱讀背面之注意事項再填寫本頁) 裝·-------訂--K--l· I---線 經濟部智慧財產局員工消費合作社印製 13V. Description of the invention (9 is the same. However, the special configuration in Fig. 1 does not provide automatic sound reinforcement for single-track signals (that is, the same signal input to the first and second systems), and the fourth The system shown in the figure is ok. This is because the present invention includes a second adjustment signal line n0 containing an adder 1 丨 5. The input is the first and second adjustment signals, and the output is equal to the first and second adjustment signals. The input signal sum line and the addition line signal, a low band-pass filter 116, whose input is a line-added signal, and whose output is fed to a variable gain device and an all-pass filter 118, whose output is a variable gain device 117 The output is an enlarged version of the summed signal, and its rotation is the second adjustment signal. The second adjustment signal is shown as the sum of the first adjustment signal added to the first adjustment signal and the first adjustment signal in the adder 113, and the output is The first system output 105 is fed, and (ii) is added to the first adjustment signal located in the adder 114, and its output is subtracted from the second input signal at the subtractor 108, and its output is fed to the second system output 109. In fact, the second adjustment signal is added to the first The input signal is subtracted from the second input in the same way as the first adjustment signal. Therefore, the adders 104 and 113 can have three positive inputs (the first input signal, the first adjustment signal, and the second adjustment signal). A single adder, and an adder 114, and the subtractor 108 may be a single subtractor with a single positive input (the second input sign) and two negative outputs (the first and second adjustment signals). From a perspective, the first and second adjustment signals are added to form a "super" key, that is, a 仏 sign, which is added to the first input signal to generate a first. The output signal is subtracted from the second input signal to generate a second. Output signal. ° All-pass filter can generate a comb filter when there is a single track signal (please read the precautions on the back before filling this page). Installation · ------ Order--K--l · I --- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economics13
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US86671397A | 1997-05-30 | 1997-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW413995B true TW413995B (en) | 2000-12-01 |
Family
ID=25348239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW87108489A TW413995B (en) | 1997-05-30 | 1998-11-27 | Method and system for enhancing the audio image created by an audio signal |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU7704798A (en) |
| TW (1) | TW413995B (en) |
| WO (1) | WO1998054927A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100027799A1 (en) * | 2008-07-31 | 2010-02-04 | Sony Ericsson Mobile Communications Ab | Asymmetrical delay audio crosstalk cancellation systems, methods and electronic devices including the same |
| US8737645B2 (en) | 2012-10-10 | 2014-05-27 | Archibald Doty | Increasing perceived signal strength using persistence of hearing characteristics |
| US9036088B2 (en) | 2013-07-09 | 2015-05-19 | Archibald Doty | System and methods for increasing perceived signal strength based on persistence of perception |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5526431A (en) * | 1992-06-25 | 1996-06-11 | Kabushiki Kaisha Kawai Gakki Seisakusho | Sound effect-creating device for creating ensemble effect |
| US5572591A (en) * | 1993-03-09 | 1996-11-05 | Matsushita Electric Industrial Co., Ltd. | Sound field controller |
| US5761313A (en) * | 1995-06-30 | 1998-06-02 | Philips Electronics North America Corp. | Circuit for improving the stereo image separation of a stereo signal |
-
1998
- 1998-05-29 WO PCT/US1998/010977 patent/WO1998054927A1/en active Application Filing
- 1998-05-29 AU AU77047/98A patent/AU7704798A/en not_active Abandoned
- 1998-11-27 TW TW87108489A patent/TW413995B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998054927A1 (en) | 1998-12-03 |
| AU7704798A (en) | 1998-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100458021B1 (en) | Multi-channel audio enhancement system for use in recording and playback and methods for providing same | |
| US7751914B2 (en) | Signal processing apparatus | |
| US5381482A (en) | Sound field controller | |
| JP4657452B2 (en) | Apparatus and method for synthesizing pseudo-stereo sound output from monaural input | |
| CA1330200C (en) | Surround-sound system | |
| US5784468A (en) | Spatial enhancement speaker systems and methods for spatially enhanced sound reproduction | |
| EP1225789B1 (en) | A stereo widening algorithm for loudspeakers | |
| JP4382292B2 (en) | Matrix-coded surround sound channels compatible with discrete digital audio formats | |
| US5222059A (en) | Surround-sound system with motion picture soundtrack timbre correction, surround sound channel timbre correction, defined loudspeaker directionality, and reduced comb-filter effects | |
| EP0897651A1 (en) | Audio enhancement system for use in a surround sound environment | |
| JP2014520452A (en) | System for generating natural 360 degree 3D digital stereo surround sound | |
| WO1995030322A1 (en) | Apparatus and method for adjusting levels between channels of a sound system | |
| US6711270B2 (en) | Audio reproducing apparatus | |
| TW413995B (en) | Method and system for enhancing the audio image created by an audio signal | |
| JP2944424B2 (en) | Sound reproduction circuit | |
| JPH05260597A (en) | Sound field signal reproduction device | |
| JP2003037888A (en) | Speaker system | |
| KR20090109425A (en) | Apparatus and method for generating virtual sound | |
| WO2000004744A1 (en) | Multi-channel audio surround system | |
| KR20100083477A (en) | Multi-channel surround speaker system | |
| EP0323830B1 (en) | Surround-sound system | |
| JPH08168100A (en) | Sound field processing circuit and speaker system for reproducing sound field | |
| JPH03266598A (en) | Acoustic circuit | |
| JP2003244798A (en) | Stereo signal processing apparatus | |
| JPH02142300A (en) | Sound field correction device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GD4A | Issue of patent certificate for granted invention patent | ||
| MM4A | Annulment or lapse of patent due to non-payment of fees |