[go: up one dir, main page]

JP2010276950A - Audio signal reproduction device and acoustic communication system - Google Patents

Audio signal reproduction device and acoustic communication system Download PDF

Info

Publication number
JP2010276950A
JP2010276950A JP2009130749A JP2009130749A JP2010276950A JP 2010276950 A JP2010276950 A JP 2010276950A JP 2009130749 A JP2009130749 A JP 2009130749A JP 2009130749 A JP2009130749 A JP 2009130749A JP 2010276950 A JP2010276950 A JP 2010276950A
Authority
JP
Japan
Prior art keywords
signal
data
audio signal
unit
frequency range
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.)
Granted
Application number
JP2009130749A
Other languages
Japanese (ja)
Other versions
JP5589308B2 (en
JP2010276950A5 (en
Inventor
Hitoshi Akiyama
仁志 秋山
Shinya Koseki
信也 小関
Fukutaro Okuyama
福太郎 奥山
Takuro Sone
卓朗 曽根
Hiroyuki Iwase
裕之 岩瀬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Corp
Original Assignee
Yamaha Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yamaha Corp filed Critical Yamaha Corp
Priority to JP2009130749A priority Critical patent/JP5589308B2/en
Priority to US13/058,174 priority patent/US8942388B2/en
Priority to CN2009801037693A priority patent/CN101933242A/en
Priority to PCT/JP2009/064057 priority patent/WO2010016589A1/en
Priority to EP09805071.9A priority patent/EP2312763A4/en
Publication of JP2010276950A publication Critical patent/JP2010276950A/en
Publication of JP2010276950A5 publication Critical patent/JP2010276950A5/en
Application granted granted Critical
Publication of JP5589308B2 publication Critical patent/JP5589308B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Circuit For Audible Band Transducer (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an acoustic communication system capable of reproducing high quality sound, even when an audio signal on which a data signal is superimposed is reproduced. <P>SOLUTION: A transmission device includes: a filter for cutting a high-frequency region of a musical sound signal; a data modulation section for converting a data code to a data signal of the high-frequency region; and a transmission section for transmitting a combined signal in which the musical sound signal and the data signal are combined. A receiving device includes: a receiving section for receiving the combined signal in which the data signal is superimposed on the musical sound signal with the high-frequency region being cut; a low pass filter (LPF) and a high pass filter (HPF) for separating the data signal and the musical sound signal from the combined signal; a data demodulation section for demodulating a data code from the separated data signal; and a high-frequency expansion section for interpolating the high-frequency region of the separated musical sound signal. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

この発明は、オーディオ信号帯域でデータの送受信を行うオーディオ信号再生装置および音響通信システムに関する。   The present invention relates to an audio signal reproduction device and an acoustic communication system that transmit and receive data in an audio signal band.

楽音信号等のオーディオ信号の高音域にデータ符号を重畳する方式として、たとえば特許文献１のような方式が提案されている。この方式は、データ符号で変調された変調信号を可聴周波数帯域の高音域に形成し、この変調信号を楽音信号（マスカー音）に重畳して出力する方式である。   As a method for superimposing a data code on a high frequency range of an audio signal such as a musical sound signal, for example, a method as disclosed in Patent Document 1 has been proposed. In this method, a modulation signal modulated with a data code is formed in a high sound range of an audible frequency band, and this modulation signal is superimposed on a musical sound signal (masker sound) and output.

特開２００７−１０４５９８号公報JP 2007-104598 A

上記特許文献１の方式では、高音域にデータ符号で変調された変調信号（データ信号）が重畳されるが、データ伝送の品質を維持するため、楽音信号がデータ信号の周波数帯域に重ならないように、楽音信号の高音域がカットされる。このため、楽音信号の音質が劣化してしまい、楽音を聴く聴衆に違和感を感じさせるという問題点があった。   In the method of Patent Document 1, a modulation signal (data signal) modulated with a data code is superimposed on the high sound range, but in order to maintain the quality of data transmission, the tone signal does not overlap the frequency band of the data signal. In addition, the high frequency range of the tone signal is cut. For this reason, the sound quality of the musical sound signal is deteriorated, and there is a problem that the audience listening to the musical sound feels uncomfortable.

この発明は、データ信号が重畳されたオーディオ信号を再生した場合でも良好な音質で再生が可能なオーディオ信号再生装置および音響通信システムを提供することを目的とする。   An object of the present invention is to provide an audio signal reproduction device and an acoustic communication system that can reproduce with good sound quality even when an audio signal on which a data signal is superimposed is reproduced.

この発明のオーディオ信号再生装置は、高音域がカットされたオーディオ信号に、前記高音域に分布するデータ信号が重畳された合成信号を再生または受信する合成信号再生部と、前記合成信号から前記データ信号とオーディオ信号とを分離するフィルタと、分離されたデータ信号からデータ符号を復調するデータ復調部と、分離されたオーディオ信号の前記カットされた高音域を補完する高域拡張部と、を備えたことを特徴とする。   An audio signal reproduction device according to the present invention comprises: a synthesized signal reproduction unit that reproduces or receives a synthesized signal in which a data signal distributed in the high frequency range is superimposed on an audio signal in which the high frequency range is cut; and the data from the synthesized signal A filter that separates a signal and an audio signal, a data demodulator that demodulates a data code from the separated data signal, and a high-frequency expansion unit that complements the cut high-frequency range of the separated audio signal It is characterized by that.

この発明の音響通信システムは、オーディオ信号の高音域をカットするフィルタと、データ符号を前記高音域に分布する信号に変調したデータ信号を生成するデータ変調部と、前記高音域がカットされたオーディオ信号と前記データ信号とを合成して合成信号を生成する合成部と、この合成信号を送信する送信部と、を有する「送信装置」と、上記「オーディオ信号再生装置」と、を含むことを特徴とする。   The acoustic communication system according to the present invention includes a filter that cuts a high frequency range of an audio signal, a data modulation unit that generates a data signal in which a data code is modulated into a signal distributed in the high frequency range, and an audio in which the high frequency range is cut Including a “transmitting device” having a combining unit that combines a signal and the data signal to generate a combined signal, and a transmitting unit that transmits the combined signal, and the “audio signal reproducing device”. Features.

この発明によれば、オーディオ信号に重畳してデータ符号を伝送できるとともに、良好な音質でオーディオ信号を再生することが可能になる。   According to the present invention, a data code can be transmitted while being superimposed on an audio signal, and an audio signal can be reproduced with good sound quality.

この発明の実施形態である音響通信システムの構成を示す図The figure which shows the structure of the acoustic communication system which is embodiment of this invention 送信装置の各部で処理される信号の周波数スペクトルを示す図The figure which shows the frequency spectrum of the signal processed by each part of a transmitter 受信装置の各部で処理される信号の周波数スペクトルを示す図The figure which shows the frequency spectrum of the signal processed by each part of a receiver

図面を参照してこの発明の実施形態である音響通信システムについて説明する。図１は、音響通信システムの構成を示す図である。この音響通信システムは、送信装置１、受信装置２で構成されている。送信装置１と受信装置２とは伝送線路５で接続されている。この伝送線路５はデジタル伝送線であってもアナログのオーディオテーブルであってもよい。   An acoustic communication system according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of an acoustic communication system. This acoustic communication system includes a transmission device 1 and a reception device 2. The transmission device 1 and the reception device 2 are connected by a transmission line 5. The transmission line 5 may be a digital transmission line or an analog audio table.

送信装置１は、オーディオ信号である楽音信号３０にデータ符号３１の変調信号であるデータ信号を重畳した合成信号を送信する装置である。受信装置２は、送信装置１が送信した合成信号を受信し、オーディオ信号とデータ信号とを分離してオーディオ信号はスピーカ３から放音し、データ信号から復調したデータ符号をデータ処理装置４に入力する装置である。したがって、受信装置２には、スピーカ３およびデータ処理装置４が接続されている。   The transmission device 1 is a device that transmits a composite signal in which a data signal that is a modulation signal of a data code 31 is superimposed on a musical sound signal 30 that is an audio signal. The receiving device 2 receives the composite signal transmitted by the transmitting device 1, separates the audio signal and the data signal, emits the audio signal from the speaker 3, and sends the data code demodulated from the data signal to the data processing device 4. It is an input device. Accordingly, the speaker 3 and the data processing device 4 are connected to the receiving device 2.

まず、送信装置１について説明する。図２は、送信装置１の各部で処理される信号の周波数スペクトルを示す図である。送信装置１は、ローパスフィルタ（ＬＰＦ）１１、データ変調部１２、加算部１３、送信部１４を備えている。   First, the transmission device 1 will be described. FIG. 2 is a diagram illustrating a frequency spectrum of a signal processed by each unit of the transmission device 1. The transmission device 1 includes a low-pass filter (LPF) 11, a data modulation unit 12, an addition unit 13, and a transmission unit 14.

楽音信号３０は、図２（Ａ）に示すように、超低音から略２０ｋＨｚまでの周波数スペクトルを有している。ＬＰＦ１１は、このような楽音信号３０の高音域をカットするフィルタであり、一般のオーディオ用信号回路で処理可能な周波数帯域（たとえば２０ｋＨｚ以下）のうち、通常成人が殆ど聴き取り不可能な高音域（たとえば１３ｋＨｚ以上）をカットする。ＬＰＦ１１によって高音域をカットされた楽音信号の周波数スペクトルを図２（Ｂ）に示す。   As shown in FIG. 2A, the musical sound signal 30 has a frequency spectrum from very low to approximately 20 kHz. The LPF 11 is a filter that cuts such a high frequency range of the musical sound signal 30. Of the frequency band (for example, 20 kHz or less) that can be processed by a general audio signal circuit, the high frequency range that is normally hardly audible to adults. (For example, 13 kHz or more) is cut. FIG. 2B shows the frequency spectrum of a musical sound signal whose high frequency range has been cut by the LPF 11.

データ変調部１２は、データ符号３１で拡散符号やキャリア信号を変調することにより、データ符号で変調されたデータ信号を生成する回路部である。データ変調部１２は、上記高音域（１３ｋＨｚ〜２０ｋＨｚ）の周波数帯域に分布するデータ信号を生成する。図２（Ｃ）は、高音域に分布するデータ信号の周波数スペクトルを示している。   The data modulation unit 12 is a circuit unit that generates a data signal modulated with a data code by modulating a spread code or a carrier signal with the data code 31. The data modulation unit 12 generates a data signal distributed in the high frequency range (13 kHz to 20 kHz). FIG. 2C shows the frequency spectrum of the data signal distributed in the high sound range.

加算部１３は、上記高音高域がカットされた楽音信号と高音帯域に分布するデータ信号とを加算合成して、図２（Ｄ）に示すような周波数スペクトルの合成信号を生成する。送信部１４は、この合成信号を伝送線路５に送出する。   The adder 13 adds and synthesizes the musical tone signal from which the treble and treble are cut and the data signal distributed in the treble band to generate a synthesized signal having a frequency spectrum as shown in FIG. The transmission unit 14 sends this combined signal to the transmission line 5.

伝送線路５がアナログのオーディオケーブル（たとえばシールド線など）の場合、送信部１４はアナログ増幅回路で構成される。伝送線路５がデジタルのオーディオケーブル（たとえば光ファイバ線や同軸ケーブル）の場合、送信部１４はデジタルオーディオ信号のローストリーミング回路で構成される。また、伝送線路５がＬＡＮケーブル（たとえばａＥｔｈｅｒｎｅｔ(登録商標)ケーブル）の場合、送信部１４は、パケットを送受するネットワーク回路で構成される。いずれにしても、上記のオーディオ信号の周波数帯域を処理可能な回路でよい。   When the transmission line 5 is an analog audio cable (for example, a shield line), the transmission unit 14 is configured by an analog amplifier circuit. When the transmission line 5 is a digital audio cable (for example, an optical fiber line or a coaxial cable), the transmission unit 14 is configured by a low streaming circuit of a digital audio signal. When the transmission line 5 is a LAN cable (for example, an aEthernet (registered trademark) cable), the transmission unit 14 is configured by a network circuit that transmits and receives packets. In any case, a circuit that can process the frequency band of the audio signal may be used.

次に、受信装置２について説明する。図３は、受信装置２の各部で処理される信号の周波数スペクトルを示す図である。受信装置２は、受信部２０、ローパスフィルタ（ＬＰＦ）２１、高域拡張部２２、オーディオアンプ２３、ハイパスフィルタ（ＨＰＦ）２４、データ復調部２５を備えている。   Next, the receiving device 2 will be described. FIG. 3 is a diagram illustrating a frequency spectrum of a signal processed by each unit of the receiving device 2. The receiving device 2 includes a receiving unit 20, a low-pass filter (LPF) 21, a high-frequency extending unit 22, an audio amplifier 23, a high-pass filter (HPF) 24, and a data demodulating unit 25.

受信部２０は、伝送線路５を介して送信されてくる合成信号を受信する回路部である。この受信部２０も送信部１４と同様に伝送線路５の形式にあわせた形式の回路で構成される。受信部２０が受信した合成信号は、図３（Ａ）に示すような周波数スペクトルを有している。この合成信号は、ＬＰＦ２１およびＨＰＦ２４に入力される。ＬＰＦ２１は、送信装置１のＬＰＦ１１と同様の特性の（たとえば１３ｋＨｚ以下を通過させる）フィルタであり、受信部２０が受信した合成信号のうち楽音信号３０が分布する帯域の信号成分のみを取り出す。図３（Ｂ）にＬＰＦ２１が取り出した信号成分の周波数スペクトルを示す。一方、ＨＰＦ２４は、ＬＰＦ１１，２１と逆の特性の（たとえば１３ｋＨｚ以上を通過させる）フィルタであり、受信部２０が受信した合成信号のうちデータ信号が分布する帯域（高音域）の信号成分のみを取り出す。図３（Ｃ）にＨＰＦ２４が取り出した信号成分の周波数スペクトルを示す。   The receiving unit 20 is a circuit unit that receives a composite signal transmitted via the transmission line 5. Similarly to the transmission unit 14, the reception unit 20 is configured by a circuit having a format that matches the format of the transmission line 5. The synthesized signal received by the receiving unit 20 has a frequency spectrum as shown in FIG. This synthesized signal is input to the LPF 21 and the HPF 24. The LPF 21 is a filter having the same characteristics as the LPF 11 of the transmission device 1 (for example, passing 13 kHz or less), and extracts only the signal component in the band in which the musical sound signal 30 is distributed from the synthesized signal received by the receiving unit 20. FIG. 3B shows the frequency spectrum of the signal component extracted by the LPF 21. On the other hand, the HPF 24 is a filter having characteristics opposite to those of the LPFs 11 and 21 (for example, passing 13 kHz or more), and only the signal component in the band (high sound range) in which the data signal is distributed among the synthesized signal received by the receiving unit 20. Take out. FIG. 3C shows the frequency spectrum of the signal component extracted by the HPF 24.

ＨＰＦ２４が取り出した高音域の信号（図３（Ｃ）参照）は、上記データ信号を含む信号であり、データ復調部２５に入力される。データ復調部２５は、入力されたデータ信号に対して、データ変調部１２と逆の処理をしてデータ復調する。たとえば、データ変調部１２が、拡散符号を用いてデータ符号をスペクトラム拡散処理をしている場合、データ復調部２５は、同じ拡散符号を用いて相互相関のピークを検出し、このピーク値に基づいてデータ符号を復調する。また、データ変調部１２が、キャリア信号を位相変調している場合、データ復調部２５は、直交復調回路等を用いてデータ符号を復調する。復調されたデータ符号は、外部装置であるデータ処理装置４に出力される。   A high-frequency signal (see FIG. 3C) extracted by the HPF 24 is a signal including the data signal, and is input to the data demodulator 25. The data demodulator 25 demodulates the input data signal by performing a process reverse to that of the data modulator 12. For example, when the data modulation unit 12 performs spread spectrum processing on the data code using a spread code, the data demodulation unit 25 detects a cross-correlation peak using the same spread code, and based on this peak value To demodulate the data code. When the data modulation unit 12 phase-modulates the carrier signal, the data demodulation unit 25 demodulates the data code using an orthogonal demodulation circuit or the like. The demodulated data code is output to the data processing device 4 which is an external device.

一方、ＬＰＦ２１が取り出した楽音信号成分（図３（Ｂ）参照）は、高域拡張部２２に入力される。高域拡張部２２は、現存する中低音域の信号成分に基づいて、欠落している高音域の信号成分を補完する処理部である。   On the other hand, the tone signal component (see FIG. 3B) extracted by the LPF 21 is input to the high frequency band expanding unit 22. The high frequency band expanding unit 22 is a processing unit that complements the missing high frequency signal components based on the existing mid and low frequency signal components.

この高域拡張部２２の処理手法としては、たとえば、本出願人が特許４２５４４７９号公報、特開２００７−１７８６７５号公報等に開示している手法を用いればよい。これら公報に開示される手法は、現存する中音域の周波数成分を高音域に周波数シフトすることにより、現存する周波数成分に対して違和感の無い高音成分を付加する手法である。   As a processing method of the high frequency band expanding unit 22, for example, a method disclosed by the present applicant in Japanese Patent No. 4254479, Japanese Patent Application Laid-Open No. 2007-178675, or the like may be used. The techniques disclosed in these publications are techniques for adding a high-frequency component that does not give a sense of incongruity to an existing frequency component by shifting the frequency component of the existing mid-frequency range to a high-frequency range.

高域拡張部２２で高音域が拡張された楽音信号はオーディオアンプ２３に入力される。オーディオアンプ２３は、入力された楽音信号を増幅してスピーカ３に入力する。これにより、スピーカ３からは高音域も中低音域と同様に豊かな楽音が放音される。   The musical sound signal whose high frequency range is expanded by the high frequency band expanding unit 22 is input to the audio amplifier 23. The audio amplifier 23 amplifies the input musical sound signal and inputs it to the speaker 3. As a result, a rich musical sound is emitted from the speaker 3 in the same way as the middle and low sound range.

なお、フィルタ１１，２１，２４のカットオフ周波数は上記に限定されない。また、データ変調１２の変調方式、データ復調部２４の復調方式も上に例示した方式に限定されるものではない。また、高域拡張部２２が行う高域拡張処理も上に例示した手法に限定されない。   The cut-off frequencies of the filters 11, 21, 24 are not limited to the above. Further, the modulation scheme of the data modulation 12 and the demodulation scheme of the data demodulator 24 are not limited to the schemes exemplified above. Further, the high-frequency extension processing performed by the high-frequency extension unit 22 is not limited to the method exemplified above.

また、上記実施形態では、送信装置１から受信装置２に向けて、有線の伝送線路５を介して合成信号を伝送される例を示したが、伝送線路５は無線であってもよい。また、１対１の伝送に限定されず、送信装置１がたとえば放送局で受信装置２が放送受信器であってもよい。   Moreover, although the example which transmits a synthetic | combination signal via the wired transmission line 5 from the transmitter 1 to the receiver 2 was shown in the said embodiment, the transmission line 5 may be wireless. The transmission apparatus 1 may be a broadcast station and the reception apparatus 2 may be a broadcast receiver, for example, without being limited to one-to-one transmission.

また、送信装置１に代えて、合成信号が記録されたオーディオメディアを用いてもよい。すなわち、合成信号が記録されたオーディオメディアを受信装置（オーディオ信号再生装置）２にセットし、受信部（再生部）２０がこのオーディオメディアを再生する構成にしてもよい。   Further, instead of the transmission device 1, an audio medium in which a composite signal is recorded may be used. That is, the audio media in which the synthesized signal is recorded may be set in the receiving device (audio signal reproducing device) 2 and the receiving unit (reproducing unit) 20 may reproduce the audio media.

この音響通信システムは、例えば、自動演奏ピアノシステムに適用することができる。この場合、送信装置１を楽音を放送する放送局、受信装置２を放送を受信する放送受信器、データ処理装置４を自動演奏ピアノとする。   This acoustic communication system can be applied to, for example, an automatic performance piano system. In this case, the transmitting device 1 is a broadcasting station that broadcasts musical sounds, the receiving device 2 is a broadcasting receiver that receives broadcasting, and the data processing device 4 is an automatic performance piano.

この自動演奏ピアノシステムは、以下のように動作する。送信装置１は、自動演奏データを重畳した）楽曲を放送する。受信装置２は、この放送を受信して楽曲を再生・放音するとともに、この楽音に重畳されている自動演奏データを復調してデータ処理装置４である自動演奏ピアノに入力する。そうすると、自動演奏ピアノ４は、再生されている楽曲に合わせて生の演奏音を発生する。このように、この音響通信システムによれば、音声放送以外のデータ伝送経路を持たなくても楽音に合わせた自動演奏を実現することが可能になる。   This automatic performance piano system operates as follows. The transmission apparatus 1 broadcasts a music (with automatic performance data superimposed). The receiving device 2 receives this broadcast, reproduces and emits the music, and demodulates the automatic performance data superimposed on the musical sound and inputs it to the automatic performance piano that is the data processing device 4. Then, the automatic performance piano 4 generates a live performance sound according to the music being reproduced. As described above, according to this acoustic communication system, it is possible to realize an automatic performance in accordance with a musical tone without having a data transmission path other than audio broadcasting.

１ 受信装置
２ 送信装置
１１，２１ ＬＰＦ
１２ データ変調部
２２ 高域拡張部
２４ ＨＰＦ
２５ データ復調部 1 Receiver 2 Transmitter 11, 21 LPF
12 Data modulation part 22 High frequency band extension part 24 HPF
25 Data demodulator

Claims (2)

高音域がカットされたオーディオ信号に、前記高音域に分布するデータ信号が重畳された合成信号を再生または受信する合成信号再生部と、
前記合成信号から前記データ信号とオーディオ信号とを分離するフィルタと、
分離されたデータ信号からデータ符号を復調するデータ復調部と、
分離されたオーディオ信号の前記カットされた高音域を補完する高域拡張部と、
を備えたオーディオ信号再生装置。 A synthesized signal reproduction unit that reproduces or receives a synthesized signal in which a data signal distributed in the high frequency range is superimposed on an audio signal in which the high frequency range is cut;
A filter for separating the data signal and the audio signal from the synthesized signal;
A data demodulator for demodulating a data code from the separated data signal;
A high-frequency extension that complements the cut high-frequency range of the separated audio signal;
An audio signal reproducing apparatus comprising: オーディオ信号の高音域をカットするフィルタと、データ符号を前記高音域に分布する信号に変調したデータ信号を生成するデータ変調部と、前記高音域がカットされたオーディオ信号と前記データ信号とを合成して合成信号を生成する合成部と、この合成信号を送信する送信部と、を有する送信装置と、
請求項１に記載のオーディオ信号再生装置と、
を含むことを特徴とする音響通信システム。 A filter that cuts a high frequency range of an audio signal, a data modulation unit that generates a data signal in which a data code is modulated into a signal distributed in the high frequency range, and an audio signal from which the high frequency range is cut and the data signal are combined. A transmission unit having a combining unit that generates a combined signal and a transmitting unit that transmits the combined signal;
An audio signal reproduction device according to claim 1;
An acoustic communication system comprising:
JP2009130749A 2008-08-08 2009-05-29 Audio signal receiving apparatus, audio signal reproducing apparatus, and acoustic communication system Active JP5589308B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2009130749A JP5589308B2 (en) 2009-05-29 2009-05-29 Audio signal receiving apparatus, audio signal reproducing apparatus, and acoustic communication system
US13/058,174 US8942388B2 (en) 2008-08-08 2009-08-07 Modulation device and demodulation device
CN2009801037693A CN101933242A (en) 2008-08-08 2009-08-07 Modulation device and demodulation device
PCT/JP2009/064057 WO2010016589A1 (en) 2008-08-08 2009-08-07 Modulation device and demodulation device
EP09805071.9A EP2312763A4 (en) 2008-08-08 2009-08-07 Modulation device and demodulation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009130749A JP5589308B2 (en) 2009-05-29 2009-05-29 Audio signal receiving apparatus, audio signal reproducing apparatus, and acoustic communication system

Publications (3)

Publication Number Publication Date
JP2010276950A true JP2010276950A (en) 2010-12-09
JP2010276950A5 JP2010276950A5 (en) 2013-02-07
JP5589308B2 JP5589308B2 (en) 2014-09-17

Family

ID=43423956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009130749A Active JP5589308B2 (en) 2008-08-08 2009-05-29 Audio signal receiving apparatus, audio signal reproducing apparatus, and acoustic communication system

Country Status (1)

Country Link
JP (1) JP5589308B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013068899A (en) * 2011-09-26 2013-04-18 Yamaha Corp Musical sound reproducing device, information processing device and program
US9029676B2 (en) 2010-03-31 2015-05-12 Yamaha Corporation Musical score device that identifies and displays a musical score from emitted sound and a method thereof
US9040801B2 (en) 2011-09-25 2015-05-26 Yamaha Corporation Displaying content in relation to music reproduction by means of information processing apparatus independent of music reproduction apparatus
US9082382B2 (en) 2012-01-06 2015-07-14 Yamaha Corporation Musical performance apparatus and musical performance program
JP2019169949A (en) * 2019-04-24 2019-10-03 ヤマハ株式会社 Speech processing system and speech processing method
US10691400B2 (en) 2014-07-29 2020-06-23 Yamaha Corporation Information management system and information management method
US10733386B2 (en) 2014-07-29 2020-08-04 Yamaha Corporation Terminal device, information providing system, information presentation method, and information providing method

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61235908A (en) * 1985-04-12 1986-10-21 Mitsubishi Heavy Ind Ltd Voice/operation synchronizing device
JPS62216462A (en) * 1986-03-17 1987-09-24 Tokyo Electric Co Ltd Simultaneous voice/data communication device
JPS62183894U (en) * 1986-05-13 1987-11-21
JPH07169142A (en) * 1993-12-16 1995-07-04 Olympus Optical Co Ltd Information recording/reproducing device
JPH1145474A (en) * 1997-07-28 1999-02-16 Sony Corp Transmission device and reception device for acoustic control signal, control system and control method using acoustic control signal
JP2000156049A (en) * 1998-11-20 2000-06-06 Yamaha Corp Audio medium and medium reproducing device
JP2002015522A (en) * 2000-06-30 2002-01-18 Matsushita Electric Ind Co Ltd Voice band extending apparatus and voice band extending method
JP2004034250A (en) * 2002-07-05 2004-02-05 Nippon Telegr & Teleph Corp <Ntt> Robot system, robot control signal distribution device, robot control device, robot control signal distribution method, robot control method, program, and computer-readable recording medium recording program
JP2005010621A (en) * 2003-06-20 2005-01-13 Matsushita Electric Ind Co Ltd Voice bandwidth extension apparatus and bandwidth extension method
JP2006098717A (en) * 2004-09-29 2006-04-13 Denon Ltd Digital signal processing device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61235908A (en) * 1985-04-12 1986-10-21 Mitsubishi Heavy Ind Ltd Voice/operation synchronizing device
JPS62216462A (en) * 1986-03-17 1987-09-24 Tokyo Electric Co Ltd Simultaneous voice/data communication device
JPS62183894U (en) * 1986-05-13 1987-11-21
JPH07169142A (en) * 1993-12-16 1995-07-04 Olympus Optical Co Ltd Information recording/reproducing device
JPH1145474A (en) * 1997-07-28 1999-02-16 Sony Corp Transmission device and reception device for acoustic control signal, control system and control method using acoustic control signal
JP2000156049A (en) * 1998-11-20 2000-06-06 Yamaha Corp Audio medium and medium reproducing device
JP2002015522A (en) * 2000-06-30 2002-01-18 Matsushita Electric Ind Co Ltd Voice band extending apparatus and voice band extending method
JP2004034250A (en) * 2002-07-05 2004-02-05 Nippon Telegr & Teleph Corp <Ntt> Robot system, robot control signal distribution device, robot control device, robot control signal distribution method, robot control method, program, and computer-readable recording medium recording program
JP2005010621A (en) * 2003-06-20 2005-01-13 Matsushita Electric Ind Co Ltd Voice bandwidth extension apparatus and bandwidth extension method
JP2006098717A (en) * 2004-09-29 2006-04-13 Denon Ltd Digital signal processing device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9029676B2 (en) 2010-03-31 2015-05-12 Yamaha Corporation Musical score device that identifies and displays a musical score from emitted sound and a method thereof
US9040801B2 (en) 2011-09-25 2015-05-26 Yamaha Corporation Displaying content in relation to music reproduction by means of information processing apparatus independent of music reproduction apparatus
US9524706B2 (en) 2011-09-25 2016-12-20 Yamaha Corporation Displaying content in relation to music reproduction by means of information processing apparatus independent of music reproduction apparatus
JP2013068899A (en) * 2011-09-26 2013-04-18 Yamaha Corp Musical sound reproducing device, information processing device and program
US9082382B2 (en) 2012-01-06 2015-07-14 Yamaha Corporation Musical performance apparatus and musical performance program
US10691400B2 (en) 2014-07-29 2020-06-23 Yamaha Corporation Information management system and information management method
US10733386B2 (en) 2014-07-29 2020-08-04 Yamaha Corporation Terminal device, information providing system, information presentation method, and information providing method
JP2019169949A (en) * 2019-04-24 2019-10-03 ヤマハ株式会社 Speech processing system and speech processing method

Also Published As

Publication number Publication date
JP5589308B2 (en) 2014-09-17

Similar Documents

Publication Publication Date Title
JP4398416B2 (en) Modulation device, modulation method, demodulation device, and demodulation method
JP5589308B2 (en) Audio signal receiving apparatus, audio signal reproducing apparatus, and acoustic communication system
JP2007104598A5 (en)
CN101933242A (en) Modulation device and demodulation device
JP2015043561A (en) System and method for narrow bandwidth digital signal processing
US9438995B2 (en) Audio signal processing circuit
DK1135969T3 (en) Digital wireless speaker system
JP2011145541A (en) Reproduction device, musical sound signal output device, reproduction system and program
JP2010276950A5 (en) Audio signal receiving apparatus, audio signal reproducing apparatus, and acoustic communication system
JP4398494B2 (en) Modulation apparatus and modulation method
JP5459019B2 (en) Signal generation apparatus and signal processing apparatus
US9319802B2 (en) Personal audio system and method
JP2004221920A (en) Transmitting/receiving system, transmission system, transmitter, and receiver
JPH05191885A (en) Acoustic signal equalizer circuit
JP2004535736A (en) Apparatus and method for multiple signal carrier transmission
KR101400617B1 (en) Broadcasting system for interoperating electronic devices
KR101406748B1 (en) Digital audio device for improving sound quality
JP5482381B2 (en) Data transmission apparatus and data transmission method using acoustic signal
JP5664419B2 (en) Acoustic communication system
JP2009094558A (en) Modulation apparatus and modulation method
JP5169913B2 (en) Data superimposing apparatus, communication system, and acoustic communication method
JP2009246430A (en) Radio communication device and method of processing radio communication device
JP2009159020A (en) Signal processing apparatus, signal processing method, and program
JP2016134645A (en) Broadcast reception device and broadcast reception method
JP2009296617A (en) Modulation apparatus, modulation method, demodulation apparatus, and demodulation method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120524

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20121218

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130226

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130430

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130820

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20131021

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20140128

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140417

A911 Transfer to examiner for re-examination before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20140425

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20140701

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140714

R150 Certificate of patent or registration of utility model

Ref document number: 5589308

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313532

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350