JPH09130347A - Insertion circuit for digital mixing device - Google Patents
Insertion circuit for digital mixing deviceInfo
- Publication number
- JPH09130347A JPH09130347A JP7303581A JP30358195A JPH09130347A JP H09130347 A JPH09130347 A JP H09130347A JP 7303581 A JP7303581 A JP 7303581A JP 30358195 A JP30358195 A JP 30358195A JP H09130347 A JPH09130347 A JP H09130347A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- external device
- transmission
- received
- signal processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
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- Studio Circuits (AREA)
- Circuit For Audible Band Transducer (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は各種放送用、レコ
ーディング用スタジオ等において使用されるオーディオ
信号制御用のデジタルミキシング装置に関し、詳しくは
外部にオーディオ信号の加工等を行う装置を接続するた
めのインサーション回路に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio signal control digital mixing apparatus used in various broadcasting and recording studios, and more particularly to an inserter for externally connecting an apparatus for processing audio signals. Regarding the circuit.
【０００２】[0002]
【従来の技術】従来この種のインサーション回路とし
て、例えば図４に示す構成の回路があった。図において
１は送信用信号処理部、２は受信信号処理部、３は送信
手段、４は受信手段、５はオーディオ信号の加工等を行
う外部機器である。2. Description of the Related Art Conventionally, as an insertion circuit of this type, for example, there is a circuit having a structure shown in FIG. In the figure, 1 is a transmission signal processing unit, 2 is a reception signal processing unit, 3 is a transmission means, 4 is a reception means, and 5 is an external device for processing an audio signal.
【０００３】しかして、送信用信号処理部（ＤＳＰ：Di
gital Signal Processor）１から出力された加工用のデ
ジタルオーディオ信号は、送信手段３であるシリアル送
信ポートＴＸよりシリアル通信ライン７を介して外部機
器５に送信される。外部機器５ではこのオーディオ信号
を受信すると周知の技術手段により、デジタルオーディ
オ信号に対しエコー、イコライザ等の加工を加える。加
工されたオーディオ信号は外部機器５からシリアル通信
ライン７を介して受信手段４であるシリアル受信ポート
ＲＸに送信される。このシリアル受信ポート４は受信し
たオーディオ信号を内部バス６を介して受信信号処理部
２であるＤＳＰに送出する。このＤＳＰ４は受信したオ
ーディオ信号にその他の必要な処理（例えばミキシング
等）を行い、放送用等の出力信号とする。However, the transmission signal processing unit (DSP: Di
The digital audio signal for processing output from the digital signal processor 1) is transmitted from the serial transmission port TX which is the transmission means 3 to the external device 5 via the serial communication line 7. When the external device 5 receives the audio signal, the digital audio signal is processed by an echo, an equalizer or the like by a known technical means. The processed audio signal is transmitted from the external device 5 through the serial communication line 7 to the serial receiving port RX which is the receiving means 4. The serial reception port 4 sends the received audio signal to the DSP which is the reception signal processing unit 2 via the internal bus 6. The DSP 4 performs other necessary processing (for example, mixing) on the received audio signal to obtain an output signal for broadcasting or the like.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな従来のインサーション回路は送信用信号処理部１→
送信手段３→外部機器５→受信手段４→受信信号処理部
２という単一の信号経路で構成され、受信手段はオーデ
ィオ信号が正常に受信されているか否かの判断を行って
いない。しかもモニタ用とは異なり本線の系統であるた
め、例えば外部機器５が故障する等の異常が生じた場
合、オーディオ信号が受信手段４に正常に受信されなく
なり、オーディオ信号が途絶えてオンエア中であれば放
送信号が途絶えるという放送事故を生じる恐れがあっ
た。However, such a conventional insertion circuit has a transmission signal processing unit 1 →
It is composed of a single signal path of transmitting means 3 → external device 5 → receiving means 4 → reception signal processing section 2, and the receiving means does not judge whether or not the audio signal is normally received. Moreover, unlike the system for monitoring, since it is a main line system, when an abnormality such as a failure of the external device 5 occurs, the audio signal is not normally received by the receiving means 4, and the audio signal is interrupted while it is on air. For example, there was a risk of a broadcast accident in which the broadcast signal was lost.
【０００５】この発明はかかる点に鑑みなされたもの
で、その目的とするところは、外部機器５からのオーデ
ィオ信号が正常に受信されているか否かを判断し、正常
に受信されていないと判断したときには受信信号処理部
に送出するオーディオ信号を外部機器５に送出するため
の信号に切り換えることにより、異常信号による放送出
力や放送断などの事故の生じないインサーション回路を
提供することにある。The present invention has been made in view of the above points, and an object thereof is to judge whether or not an audio signal from the external device 5 is normally received, and judge that the audio signal is not normally received. In such a case, the audio signal to be sent to the reception signal processing unit is switched to a signal to be sent to the external device 5, thereby providing an insertion circuit in which an accident such as broadcast output or broadcast interruption due to an abnormal signal does not occur.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
本発明は、外部機器５に送信するための信号を送出する
送信用信号処理部１と、この送信用信号処理部１からの
信号を外部機器５に対し送信する送信手段３と、外部機
器５からの信号を受信する受信手段４と、この受信手段
４により受信した外部機器５からの信号を入力して出力
信号として送出する受信信号処理部２とを備えたデジタ
ルミキシング装置のインサーション回路において、前記
受信手段４は外部機器５からの信号が正常に受信されて
いるかを判断し、この判断結果により外部機器５からの
信号が正常に受信されていないと判断した場合には受信
手段４からの信号に換えて、前記送信用信号処理部１か
ら外部機器５に対し送信するための信号を受信信号処理
部２に対し送出する切換手段８を備えることとした。In order to solve the above problems, the present invention provides a transmission signal processing unit 1 for transmitting a signal for transmission to an external device 5, and a signal from the transmission signal processing unit 1. A transmitting means 3 for transmitting to the external device 5, a receiving means 4 for receiving a signal from the external device 5, and a received signal for inputting a signal from the external device 5 received by the receiving means 4 and transmitting it as an output signal. In the insertion circuit of the digital mixing apparatus including the processing unit 2, the receiving unit 4 determines whether the signal from the external device 5 is normally received, and the signal from the external device 5 is normal based on the determination result. When it is determined that the signal has not been received, the signal from the receiving means 4 is replaced with a signal to be transmitted from the transmission signal processing section 1 to the external device 5 to the reception signal processing section 2. It was further comprising switching means 8.
【０００７】また、前記受信手段４は外部機器５から受
信したシリアル信号フレームの状態により受信信号が正
常か否かを判断することとした、Further, the receiving means 4 judges whether the received signal is normal or not according to the state of the serial signal frame received from the external device 5.
【０００８】[0008]
【発明の実施の形態】次に本発明の実施態様につき図に
基づいて説明する。図１は本発明のインサーション回路
の基本構成を示すブロック図で、図中１は送信用信号処
理部、２は受信信号処理部、３は送信手段、４は受信手
段、５はオーディオ信号の加工等を行う外部機器、６は
内部バス、６ａはエラー信号ライン、７は通信ライン、
８は切換手段である。なお、基本的構成は図４の回路と
同一であり、各構成要素の詳細な説明は省略する。BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the basic configuration of an insertion circuit of the present invention. In the figure, 1 is a transmission signal processing unit, 2 is a reception signal processing unit, 3 is a transmission means, 4 is a reception means, and 5 is an audio signal. External equipment for processing, 6 is an internal bus, 6a is an error signal line, 7 is a communication line,
Reference numeral 8 is a switching means. The basic configuration is the same as the circuit of FIG. 4, and detailed description of each component is omitted.
【０００９】次に動作について説明する。送信用信号処
理部１は図に示すように、例えばデジタル信号を高速処
理可能なＤＳＰが用いられるが、デジタル信号を処理し
得るものであれば汎用のＣＰＵやＲＩＳＣなどを用いて
も良い。この送信用信号処理部１には図示しない入力ユ
ニットから選択されたオーディオ入力信号等が入力さ
れ、フィルタ処理、レベル調整、ミキシング等の処理が
加えられる。送信用信号処理部１で所定の処理が行われ
た送信用のオーディオ信号は内部バス６を介して送信手
段３に送られる。送信手段３は、例えばシリアル送信ポ
ートＴＸで構成されている。この送信手段３により送信
用オーディオ信号は、通信ライン７を介して外部機器５
に送信される。Next, the operation will be described. As shown in the figure, for example, a DSP capable of high-speed processing of digital signals is used as the transmission signal processing unit 1, but a general-purpose CPU or RISC may be used as long as it can process digital signals. An audio input signal or the like selected from an input unit (not shown) is input to the transmission signal processing unit 1, and processing such as filter processing, level adjustment, and mixing is added. The audio signal for transmission, which has been subjected to predetermined processing in the signal processing unit for transmission 1, is sent to the transmitting means 3 via the internal bus 6. The transmission means 3 is composed of, for example, a serial transmission port TX. The audio signal for transmission by the transmitting means 3 is transmitted to the external device 5 via the communication line 7.
Sent to.
【００１０】外部機器５では送られてきたオーディオ信
号に対しイコライザ、エコー等の処理を行い、通信ライ
ン７を介して受信手段４に受信用のオーディオ信号を送
出する。受信手段４は受信したオーディオ信号が正常な
信号か否かを判断し、エラー信号ライン６ａを介して受
信信号処理部２に送出する。受信信号処理部２では、受
信手段４に入力された信号が正常なものであれば、内部
バス６のルートを受信手段４からの信号が受けられるよ
うに切換手段８を操作する。The external device 5 performs processing such as equalizer and echo on the sent audio signal, and sends the receiving audio signal to the receiving means 4 through the communication line 7. The receiving means 4 determines whether or not the received audio signal is a normal signal, and sends it to the received signal processing section 2 via the error signal line 6a. In the reception signal processing section 2, if the signal input to the reception means 4 is normal, the switching means 8 is operated so that the signal from the reception means 4 can be received along the route of the internal bus 6.
【００１１】また、外部機器５が故障等により、受信手
段４に受信される信号が異常であると判断した場合に
は、エラー信号ライン６ａを介して受信信号処理部２に
エラー信号が送られ、受信信号処理部２は内部バス６の
ルートを送信用信号処理部１からの信号を受けるように
切換手段８を操作する。これにより、受信信号処理部２
には送信用信号処理部１からのオーディオ信号が入力さ
れ、外部機器５を通さない未処理の信号であるが、音声
断等の放送事故は防止できる。When it is determined that the signal received by the receiving means 4 is abnormal due to a failure of the external device 5, an error signal is sent to the received signal processing section 2 via the error signal line 6a. The reception signal processing unit 2 operates the switching means 8 so that the route of the internal bus 6 receives the signal from the transmission signal processing unit 1. As a result, the reception signal processing unit 2
Is an unprocessed signal to which the audio signal from the transmission signal processing unit 1 is input and which does not pass through the external device 5, but a broadcast accident such as audio interruption can be prevented.
【００１２】なお、上記の例では送信用信号処理部１と
受信信号処理部２とは別個のものとして記載したが、実
際の使用に際しては、例えば１つのＤＳＰで外部機器５
に対し信号の授受を行うこともできる。また、切換手段
８も図では有接点のスイッチとして記載されているが、
実際には半導体を用いた信号切換装置や前記ＤＳＰ等の
信号プロセッサ内部でのソフトウエアによる選択処理で
も良い。In the above example, the transmission signal processing unit 1 and the reception signal processing unit 2 are described as separate components, but in actual use, for example, one DSP is used as the external device 5.
It is also possible to send and receive signals to and from. Further, the switching means 8 is also shown as a contact switch in the figure,
Actually, the selection processing may be performed by software inside the signal switching device using a semiconductor or the signal processor such as the DSP.
【００１３】[0013]
【実施例】次に、受信オーディオ信号と受信手段４の具
体的な実施例について説明する。図３は外部機器５から
送られてくる信号のフォーマットを示したもので、シリ
アルデータの１フレーム分が示されている。そして、周
知のようにこのようなフレームデータが複数（例えば１
〜１９１）集合して１ブロックのデータとなる。なお、
ここでは説明しないが送信データも同様のものである。EXAMPLES Next, concrete examples of the received audio signal and the receiving means 4 will be described. FIG. 3 shows a format of a signal sent from the external device 5, and one frame of serial data is shown. As is well known, a plurality of such frame data (for example, 1
191) Collected to form one block of data. In addition,
Although not described here, the same applies to transmission data.
【００１４】このフォーマットはＡＥＳ３−１９９２
（Audio Engineering Society)に基づくもので、ビット
０〜３が同期のために使用される特定のパターンのプリ
アンブル、ビット４〜２７はオーディオサンプルワード
で、デジタルオーディオサンプルの大きさを表す最下位
ビットから最上位ビットまで格納される。なお、ＡＵＸ
は場合により使用される補助サンプルビットである。Ｖ
は有効ビットでオーディオサンプルビットがアナログオ
ーディオ信号に適しているかを表す。Ｕはユーザーデー
タビットで、使用者が何らかの情報を搬送するために使
用する。Ｃはチャンネル状態ビットで、それぞれのオー
ディオチャンネルに付随する情報を搬送する。Ｐはパリ
ティビットで奇数個のエラーの検出を行うためのビット
である。This format is AES3-1992
(Audio Engineering Society), where bits 0 to 3 are the preamble of a specific pattern used for synchronization, and bits 4 to 27 are audio sample words, starting from the least significant bit representing the size of the digital audio sample. Up to the most significant bit is stored. AUX
Is an optional auxiliary sample bit. V
Is a valid bit and indicates whether the audio sample bit is suitable for an analog audio signal. U is a user data bit that the user uses to carry some information. C is a channel status bit, which carries information associated with each audio channel. P is a parity bit for detecting an odd number of errors.
【００１５】図３は受信手段４の具体的構成例であるデ
ジタルオーディオインターフェースレシーバＩＣの構成
を示すブロック図である。図中、端子ＲＸＰ、ＲＸＮに
通信ラインを接続し、内部のＲＳ４２２レシーバで受信
する。また、内蔵するＰＬＬによりクロックデータを再
生する。デジタルオーディオ信号はＳＤＡＴＡ端子より
出力され、チャンネルステータスとユーザーデータはそ
れぞれＣ，Ｕ端子より出力される。ＥＲＲ端子はパリテ
ィエラー、バイフェーズ符号違反またはＰＬＬのロック
はずれのどれかが発生したときに出力される。FIG. 3 is a block diagram showing the configuration of a digital audio interface receiver IC which is a specific configuration example of the receiving means 4. In the figure, a communication line is connected to the terminals RXP and RXN, and is received by an internal RS422 receiver. Also, the clock data is reproduced by the built-in PLL. The digital audio signal is output from the SDATA terminal, and the channel status and user data are output from the C and U terminals, respectively. The ERR terminal is output when a parity error, a bi-phase code violation, or a PLL lock release occurs.
【００１６】このように、ＥＲＲ端子により受信データ
にエラーが生じたことがわかる。そして、この各エラー
端子の出力を専用のエラー信号ライン６ａを介し、ある
いは内部バス６をエラー信号ライン６ａとして使用し
て、受信信号処理部２に送出することにより、受信信号
処理部２は受信手段４の受信信号が正常か否か判断でき
る。As described above, it can be seen that the ERR terminal causes an error in the received data. The output of each error terminal is sent to the reception signal processing unit 2 via the dedicated error signal line 6a or the internal bus 6 is used as the error signal line 6a, so that the reception signal processing unit 2 receives the signal. It can be determined whether the received signal of the means 4 is normal.
【００１７】[0017]
【発明の効果】以上のように本発明によれば、外部機器
からの信号が異常な時は、この外部機器に対して送信す
るための信号を直接出力用の信号としているので、外部
機器に異常が生じても、異常なオーディオ信号が放送さ
れたり、オーディオ信号が途絶えてしまうといった事故
を未然に防止できる。As described above, according to the present invention, when the signal from the external device is abnormal, the signal to be transmitted to the external device is used as the signal for direct output. Even if an abnormality occurs, it is possible to prevent an accident such as an abnormal audio signal being broadcast or the audio signal being interrupted.
【図１】本発明にかかるインサーション回路の基本構成
を示すブロック図。FIG. 1 is a block diagram showing a basic configuration of an insertion circuit according to the present invention.
【図２】外部機器からのシリアルデータフォーマットの
実施例を示した図。FIG. 2 is a diagram showing an example of a serial data format from an external device.
【図３】受信手段の実施例であるレシーバＩＣの構成を
示したブロック図。FIG. 3 is a block diagram showing a configuration of a receiver IC that is an embodiment of a receiving unit.
【図４】従来のインサーション回路の一例を示した図で
ある。FIG. 4 is a diagram showing an example of a conventional insertion circuit.
１ 送信用信号処理部 ２ 受信信号処理部 ３ 送信手段 ４ 受信手段 ５ 外部機器 ６ 内部バス ６ａ エラー信号ライン ７ 通信ライン ８ 切換手段 1 signal processing unit for transmission 2 received signal processing unit 3 transmitting means 4 receiving means 5 external equipment 6 internal bus 6a error signal line 7 communication line 8 switching means
Claims (2)
る送信用信号処理部と、この送信用信号処理部からの信
号を外部機器に対し送信する送信手段と、外部機器から
の信号を受信する受信手段と、この受信手段により受信
した外部機器からの信号を入力して出力信号として送出
する受信信号処理部とを備えたデジタルミキシング装置
のインサーション回路において、 前記受信手段は外部機器からの信号が正常に受信されて
いるかを判断し、その結果信号が正常に受信されていな
いと判断した場合には受信手段からの信号に換えて、前
記送信用信号処理部から外部機器に対し送信するための
信号を受信信号処理手段に対し送出する切換手段を備え
たことを特徴とするデジタルミキシング装置のインサー
ション回路。1. A transmission signal processing unit for transmitting a signal to be transmitted to an external device, a transmission means for transmitting a signal from the transmission signal processing unit to the external device, and a signal from the external device. In the insertion circuit of the digital mixing device, comprising: a receiving unit for receiving the signal from the external device received by the receiving unit and transmitting the received signal as an output signal, the receiving unit is It is determined whether or not the signal is normally received, and if it is determined that the signal is not normally received, the signal from the receiving means is converted and the signal is transmitted from the signal processing unit for transmission to the external device. An insertion circuit of a digital mixing device, comprising switching means for sending a signal for receiving to a received signal processing means.
リアル信号フレームの状態により受信信号が正常か否か
を判断することを特徴とする請求項１記載のデジタルミ
キシング装置のインサーション回路。2. The insertion circuit of the digital mixing apparatus according to claim 1, wherein the receiving unit determines whether or not the received signal is normal based on the state of the serial signal frame received from the external device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30358195A JP3778976B2 (en) | 1995-10-26 | 1995-10-26 | Insertion circuit for digital mixing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30358195A JP3778976B2 (en) | 1995-10-26 | 1995-10-26 | Insertion circuit for digital mixing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09130347A true JPH09130347A (en) | 1997-05-16 |
| JP3778976B2 JP3778976B2 (en) | 2006-05-24 |
Family
ID=17922732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30358195A Expired - Lifetime JP3778976B2 (en) | 1995-10-26 | 1995-10-26 | Insertion circuit for digital mixing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3778976B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012070080A1 (en) * | 2010-11-22 | 2012-05-31 | パイオニア株式会社 | Playback control device, playback system, and method and program for controlling playback control device |
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| JPH06177900A (en) * | 1992-12-04 | 1994-06-24 | Yamaha Corp | Ring type lan |
| JPH06232664A (en) * | 1993-01-29 | 1994-08-19 | Sony Corp | Mixer |
| JPH06310957A (en) * | 1993-04-26 | 1994-11-04 | Sony Corp | Digital mixer |
| JPH096350A (en) * | 1993-11-02 | 1997-01-10 | Yamaha Corp | Effect adding device and electronic musical instrument using the same |
-
1995
- 1995-10-26 JP JP30358195A patent/JP3778976B2/en not_active Expired - Lifetime
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56166614A (en) * | 1980-05-27 | 1981-12-21 | Sony Corp | Mixing console |
| JPS62109450A (en) * | 1985-11-07 | 1987-05-20 | Hitachi Cable Ltd | Bypass method for node station of loop network |
| JPH02259579A (en) * | 1989-03-31 | 1990-10-22 | Anritsu Corp | Spectrum analyzer |
| JPH05275945A (en) * | 1992-03-25 | 1993-10-22 | Sony Corp | Level displaying device for digital audio signal |
| JPH05304443A (en) * | 1992-03-25 | 1993-11-16 | Sony Corp | Digital audio signal processor |
| JPH06177900A (en) * | 1992-12-04 | 1994-06-24 | Yamaha Corp | Ring type lan |
| JPH06232664A (en) * | 1993-01-29 | 1994-08-19 | Sony Corp | Mixer |
| JPH06310957A (en) * | 1993-04-26 | 1994-11-04 | Sony Corp | Digital mixer |
| JPH096350A (en) * | 1993-11-02 | 1997-01-10 | Yamaha Corp | Effect adding device and electronic musical instrument using the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012070080A1 (en) * | 2010-11-22 | 2012-05-31 | パイオニア株式会社 | Playback control device, playback system, and method and program for controlling playback control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3778976B2 (en) | 2006-05-24 |
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