EP0880779A1 - Digitales tonsignalverarbeitungsgerät - Google Patents
Digitales tonsignalverarbeitungsgerätInfo
- Publication number
- EP0880779A1 EP0880779A1 EP96922833A EP96922833A EP0880779A1 EP 0880779 A1 EP0880779 A1 EP 0880779A1 EP 96922833 A EP96922833 A EP 96922833A EP 96922833 A EP96922833 A EP 96922833A EP 0880779 A1 EP0880779 A1 EP 0880779A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- speed
- processing device
- digital processing
- audio signal
- sampling
- 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.)
- Withdrawn
Links
- 230000005236 sound signal Effects 0.000 title claims abstract description 19
- 238000012545 processing Methods 0.000 title claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 21
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 230000005291 magnetic effect Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000004579 marble Substances 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 claims 1
- 238000006748 scratching Methods 0.000 description 5
- 230000002393 scratching effect Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001020 rhythmical effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000013518 transcription Methods 0.000 description 1
- 230000035897 transcription Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/005—Reproducing at a different information rate from the information rate of recording
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/0091—Means for obtaining special acoustic effects
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2210/00—Aspects or methods of musical processing having intrinsic musical character, i.e. involving musical theory or musical parameters or relying on musical knowledge, as applied in electrophonic musical tools or instruments
- G10H2210/155—Musical effects
- G10H2210/195—Modulation effects, i.e. smooth non-discontinuous variations over a time interval, e.g. within a note, melody or musical transition, of any sound parameter, e.g. amplitude, pitch, spectral response or playback speed
- G10H2210/241—Scratch effects, i.e. emulating playback velocity or pitch manipulation effects normally obtained by a disc-jockey manually rotating a LP record forward and backward
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2220/00—Input/output interfacing specifically adapted for electrophonic musical tools or instruments
- G10H2220/461—Transducers, i.e. details, positioning or use of assemblies to detect and convert mechanical vibrations or mechanical strains into an electrical signal, e.g. audio, trigger or control signal
- G10H2220/521—Hall effect transducers or similar magnetic field sensing semiconductor devices, e.g. for string vibration sensing or key movement sensing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2545—CDs
Definitions
- the present invention relates to a digital processing device for an audio signal.
- scratching has become established as a generally acknowledged musical instrument and has been utilized in numerous music productions. More and more music groups are also using scratch musicians live.
- scratch aids exist for digital recording-and-playback apparatus (music samplers) in the form of scratch discs, slide potentiometers, knobs, etc.
- the object of the invention is to propose a device which avoids the drawbacks of the prior art.
- This object is achieved especially thanks to the novel elements of claim 1.
- this object is achieved thanks to a reference generated mechanically and making it possible to pass instantly from normal reproduction to manipulated reproduction.
- the invention can be realized using any other kind of moving element, for instance a running belt or a rotating knob or control button on the front panel of an audiomixer.
- Figure 1 A is a front elevation of a first embodiment of the invention wherein the movable element, the speed and direction of which can be controlled, is made up of a record-player tumtable ;
- Figure 1 B is a top plan view of this embodiment ;
- Figure 1 C is an elevation of this embodiment with the incremental measuring system in lifted position ;
- Figure 2A is an elevation of a second embodiment of the invention likewise applied to a record player, wherein the speed of the turntable is measured optically ;
- Figure 2B is an enlarged view of the optical sensors of Figure 2A ;
- Figure 2C is a top plan view of the device of Figure 2A ;
- Figure 2D is an enlarged view of the optical marking on the tumtable of Figure 2C ;
- Figure 3A is a top plan view of a third embodiment of the invention, likewise applied to a record player, wherein the speed of the tumtable is measured by means of a Hall sensor ;
- Figure 3B is an enlarged view of the Hall sensor of Figure 3A ;
- Figure 4A is a fourth embodiment of the invention wherein the movable element is a belt driven by an electric motor via a slide coupling;
- Figure 4B is an elevation of the embodiment of Figure 4A.
- FIGS 1A-1C illustrate a first embodiment of the invention.
- This embodiment has the advantage of using a conventional record player 18 as the manually controllable movable element. This device can therefore be used by a disc jockey without excessive difficulty of adaptation.
- a disc 16 drives an incremental measuring system 11 available on the technical market under the name of incremental decoder or angle encoder.
- pulses occurring after predetermined intervals of time are used directly as the sampling pulse for the recording and playback of the digital music recording.
- each pulse triggers a measurement of the analog music signal from an external source, e.g., from a CD player, and enters the result as a numerical value in a storage position of a dynamic computer memory (not shown).
- the individual measurements lie one directly behind the other in the memory. It is to be heeded that the measuring system is a high-definition one. If satisfactory quality of the music reproduction is to be achieved, the sampling rate should yield 40,000 measurements per second.
- the measuring system At the normal rotation time of a record (speed of rotation 33.33 rpm) of 1.8 seconds, the measuring system must be capable of handling 72,000 pulses per rotation, or 18 angular seconds.
- the direction of rotation is evaluated in addition.
- the following and/or preceding storage position is converted, depending on the the direction of rotation, from digital to analog.
- the software addressing the computer memory can thereafter be as sophisticated as desired ; as a minimum, however, it must check the addressing of the computer memory present for overflows ; if, during recording or forward playback, the pointer reaches the end address of the memory provided, the pointer is to be set at the starting address of the memory provided, or at the end address in the case of backward play and reaching the starting address, respectively. It is thereby achieved that if the maximum available recording time is exceeded, the oldest recording is overwritten, which represents approximately the same mechanism as an endless tape loop in an analog echo apparatus.
- the signal should be digitalized with 16-bit width and be two- channel, i.e., stereo.
- FIGS 2A-2D illustrate a second embodiment of the invention, likewise applied to a record player.
- the turntable 16 of the record player comprises a pattern — in this example a pattern of altemating black 20 and white 23 marks.
- Two optical sensors 21 placed a short distance 22 above the turntable supply to a processing unit (not shown) a signal determined by the color of the mark just below each sensor.
- the processing unit determines the speed of rotation of the turntable of the record player.
- Two shifted optical sensors are necessary for determining the direction of rotation as well.
- An analog audio signal coming from an external source e.g., a CD player or a microphon, is then sampled at a frequency determined by the speed of rotation of the tumtable.
- optical sensor 21 may be provided, e.g., also a sensor using an optical fiber transporting a light beam collimated by a lens on the turntable. In a modification, it is also possible to use known marble sensors to determine the speed of the element 16.
- This embodiment having an optical sensor presents the drawback of being sensitive to dust and debris on the tumtable.
- Figures 3A and 3B illustrate another embodiment of the invention which is advantageous from this point of view.
- the speed of the turntable 16 of the record player is measured by means of a fixed magnetoinductive sensor 31 co-operating with a serrated ferromagnetic ring 30 on the tumtable of the record player.
- the invention is obviously not limited to this type of sensor, and any sensor or known device permitting the speed and direction of rotation of the tumtable to be determined may also be used. Hall-effect sensors may thus be used advantageously.
- FIGS 4A and 4B illustrate an embodiment of the invention in which no record player is used.
- a controllable servomotor 40 drives a cylinder 42 via a slide coupling 41.
- a second cylinder 43 connected to the measuring system 44 is driven by the first cylinder 42 by means of a wide belt 45.
- the disc jockey can manipulate and move the belt 45 by means of a handle 46 and thus act upon the speed and direction of rotation of the second cylinder 43.
- the measuring system 44 uses these parameters to determine the speed of reproduction of an audio signal coming from an external source.
- this device permits normal sound reproduction when the disc jockey does not act upon the movable element 45, the second cylinder being driven in this case at a normal speed by the servomotor 40.
- the electronic part of the device comprises a sampling buffer.
- the analog signal coming from a conventional analog source for instance a microphon
- a conventional analog source for instance a microphon
- the samples stored in the buffer are read successively at each reading pulse, the frequency of the reading pulses depending on the speed of the movable element (16, 45).
- the samples read are then converted into analog signals by a digital-to-analog converter and reproduced.
- the samples are stored in the sampling buffer at a speed inversely proportional to the speed of movement of the movable element (16 ; 45) and are read at a constant speed.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1799/95 | 1995-06-20 | ||
CH179995 | 1995-06-20 | ||
PCT/EP1996/002637 WO1997001168A1 (en) | 1995-06-20 | 1996-06-19 | Digital processing device for audio signal |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0880779A1 true EP0880779A1 (de) | 1998-12-02 |
Family
ID=4218878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96922833A Withdrawn EP0880779A1 (de) | 1995-06-20 | 1996-06-19 | Digitales tonsignalverarbeitungsgerät |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0880779A1 (de) |
AU (1) | AU6356996A (de) |
WO (1) | WO1997001168A1 (de) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19608958A1 (de) * | 1996-03-08 | 1997-09-11 | Ralf Pretz | Vorrichtung und Verfahren zur Steuerung der Abspielgeschwindigkeit einer in ein Abspielgerät eingelegten Compact-Disc (CD) |
DE29703145U1 (de) * | 1997-02-21 | 1997-04-24 | IDE International Design & Entertainment Gesellschaft für Gestaltung und Musikveranstaltungen mbH, 81369 München | Vorrichtung zur Erzeugung von Scratcheffekten |
DE19713286A1 (de) * | 1997-03-29 | 1998-10-01 | Thomson Brandt Gmbh | Gerät zur CD-Wiedergabe mit veränderbarer Geschwindigkeit oder Richtung |
JP2922509B2 (ja) * | 1997-09-17 | 1999-07-26 | コナミ株式会社 | 音楽演出ゲーム機、音楽演出ゲーム用の演出操作指示システムおよびゲーム用のプログラムが記録されたコンピュータ読み取り可能な記憶媒体 |
JP2000030372A (ja) * | 1998-07-09 | 2000-01-28 | Pioneer Electron Corp | オーディオ再生装置 |
FR2797518B1 (fr) * | 1999-08-09 | 2001-10-12 | Borieux Philippe Christophe Th | Procede de detection du contact et des mouvements rotatoires exerces par une main sur un disque de commande et dispositif de pilotage de la lecture d'informations permettant de le mettre en oeuvre. |
CA2350649A1 (fr) * | 1998-10-07 | 2000-04-13 | Philippe Borieux | Procede et dispositif permettant le pilotage manuel du sens et de la vitesse de la lecture d'information avec un disque de commande |
FR2784492A1 (fr) * | 1998-10-07 | 2000-04-14 | Borieux Philippe | Procede de pilotage d'un dispositif de lecture d'informations et notamment de donnees musicales et dispositif permettant de le mettre en oeuvre |
ITLT980015A1 (it) * | 1998-11-02 | 2000-05-02 | Alessandro Cortellesi | Sistema trasportabile per l'archiviazione, gestione e ascolto di brani musicali. |
TW454174B (en) * | 1999-01-14 | 2001-09-11 | Vestax Corp | Record player |
GB2361348A (en) * | 2000-02-23 | 2001-10-17 | Simon Andrew Ford | Record deck interface for DJ scratching |
FR2805634A1 (fr) * | 2000-02-28 | 2001-08-31 | Laurent Denis Fournier | Dispositif pour realiser des effets de type "scratch" a partir de sources numeriques audio |
NL1014526C2 (nl) | 2000-02-29 | 2001-08-30 | N2It Dev B V I O | Schijf te gebruiken in een inrichting voor signaalbewerking, alsmede een dergelijke inrichting. |
GB2367181B (en) * | 2000-09-20 | 2004-06-16 | Hewlett Packard Co | Data display |
DE10101473B4 (de) * | 2001-01-13 | 2007-03-08 | Native Instruments Software Synthesis Gmbh | Automatische Erkennung und Anpassung von Tempo und Phase von Musikstücken und darauf aufbauender interaktiver Musik-Abspieler |
DE10164686B4 (de) | 2001-01-13 | 2007-05-31 | Native Instruments Software Synthesis Gmbh | Automatische Erkennung und Anpassung von Tempo und Phase von Musikstücken und darauf aufbauender interaktiver Musik-Abspieler |
JP4180807B2 (ja) | 2001-04-27 | 2008-11-12 | パイオニア株式会社 | スピーカ検出装置 |
JP2002341955A (ja) * | 2001-05-17 | 2002-11-29 | Pioneer Electronic Corp | 回転式操作機構、及びそれを用いた楽音再生装置 |
JP4346836B2 (ja) * | 2001-05-21 | 2009-10-21 | パイオニア株式会社 | 情報再生装置 |
JP2002352513A (ja) | 2001-05-22 | 2002-12-06 | Pioneer Electronic Corp | 情報再生装置 |
WO2002103671A2 (de) | 2001-06-18 | 2002-12-27 | Native Instruments Software Synthesis Gmbh | Automatische erzeugung von musikalischen sratch-effekten |
DE10153673B4 (de) * | 2001-06-18 | 2005-04-07 | Native Instruments Software Synthesis Gmbh | Automatische Erzeugung von musikalischen Scratch-Effekten |
EP1423852A4 (de) * | 2001-08-07 | 2009-10-28 | Kent Justin A | System zum umsetzen einer plattenspielerbewegung in midi-daten |
GB2378805A (en) * | 2001-08-15 | 2003-02-19 | Hanpin Electron Co Ltd | Digital and analog audio signal apparatus |
GB2378806A (en) * | 2001-08-15 | 2003-02-19 | Hanpin Electron Co Ltd | Digital audio signal apparatus |
US6618329B2 (en) * | 2001-08-28 | 2003-09-09 | Hanpin Electron Co., Ltd. | Digital audio signal player having a simulated analogue record |
GB2379318B (en) * | 2001-08-31 | 2003-08-27 | Hanpin Electron Co Ltd | Digital audio signal player having a simulated analouge record |
FR2832831B1 (fr) * | 2001-11-23 | 2004-03-12 | Pascal Otalora | Dispositif d'asservissement de systemes multimedias numeriques |
GB2388243B (en) * | 2002-05-01 | 2004-09-08 | Hanpin Electron Co Ltd | Digital audio signal player having a simulated analogue record |
US6961289B2 (en) * | 2002-05-07 | 2005-11-01 | Hanpin Electron Co., Ltd. | Digital audio signal player having a simulated analogue record |
US6745091B2 (en) * | 2002-05-07 | 2004-06-01 | Hanpin Electron Co., Ltd. | Digital audio signal player having a simulated analogue record |
JP2003346469A (ja) * | 2002-05-28 | 2003-12-05 | Denon Ltd | 光ディスク再生装置 |
US7257072B2 (en) * | 2002-06-24 | 2007-08-14 | Teac Corporation | Digital audio data reproducing system |
GB2392773A (en) * | 2002-09-03 | 2004-03-10 | Kenneth John Bagnall | Digital turntable music deck |
US8077568B2 (en) * | 2002-11-12 | 2011-12-13 | Spencer Charles A | Method and system for synchronizing information specific to a location on a surface with an external source |
GB2396246B (en) * | 2002-12-10 | 2006-01-18 | Adrian Jason Ford | Turntable apparatus and turntable simulation methods |
GB2405686B (en) * | 2003-09-03 | 2006-02-15 | Steven Jukes | Record deck interface |
GB2405740B (en) * | 2003-09-03 | 2005-08-31 | Hanpin Electron Co Ltd | Dual-use audio signal player for analogue record and digital CD |
JP4295633B2 (ja) | 2003-09-30 | 2009-07-15 | 株式会社ディーアンドエムホールディングス | 再生装置および再生用操作装置ならびに再生方法 |
JP2005108319A (ja) | 2003-09-30 | 2005-04-21 | Denon Ltd | 光ディスク再生装置 |
GB2429574A (en) * | 2005-08-26 | 2007-02-28 | Hanpin Electron Co Ltd | Audio player with touch sensitive plate |
US8675454B2 (en) | 2010-12-17 | 2014-03-18 | Native Instruments Gmbh | Apparatus and method for signal processing |
US8729375B1 (en) * | 2013-06-24 | 2014-05-20 | Synth Table Partners | Platter based electronic musical instrument |
US10593313B1 (en) | 2019-02-14 | 2020-03-17 | Peter Bacigalupo | Platter based electronic musical instrument |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5350882A (en) * | 1991-12-04 | 1994-09-27 | Casio Computer Co., Ltd. | Automatic performance apparatus with operated rotation means for tempo control |
US5245663A (en) * | 1992-05-28 | 1993-09-14 | Omar Green | Back-masking effect generator |
US5336884A (en) * | 1992-07-01 | 1994-08-09 | Rockwell International Corporation | High resolution optical hybrid absolute incremental position encoder |
JPH0752344B2 (ja) * | 1992-09-09 | 1995-06-05 | ヤマハ株式会社 | 効果音発生装置 |
JP2734909B2 (ja) * | 1992-10-12 | 1998-04-02 | ヤマハ株式会社 | 波形データ読み出し装置 |
JP2508972B2 (ja) * | 1993-06-28 | 1996-06-19 | カシオ計算機株式会社 | 音響信号処理装置 |
-
1996
- 1996-06-19 WO PCT/EP1996/002637 patent/WO1997001168A1/en active Application Filing
- 1996-06-19 EP EP96922833A patent/EP0880779A1/de not_active Withdrawn
- 1996-06-19 AU AU63569/96A patent/AU6356996A/en not_active Abandoned
Non-Patent Citations (5)
Title |
---|
See also references of WO9701168A1 |
TECHNICS SL-1200MK3: "TECHNICS SL-1200MK3", WEBSITE EXTRACT, pages 1 PG, XP002989734, Retrieved from the Internet <URL:http://k-nisi.hp.infoseek.co.jp/sl-1200.htm> |
TECHNICS, WEBSITE EXTRACT, 1989, pages 1 PG, XP002989733, Retrieved from the Internet <URL:http://panasonic.jp/technics/history/1989.html> |
TECHNICS: "SL-1200MK3 service manual", TECHNICS BROCHURE/LEAFLET, 1989, pages 1 - 12, XP002989732 |
ULTIMATE PROJECT OF HINODE SHUPPAN: "Ultimate DJ handbook", 15 December 1988, KAMESABURO OKUBO, JAPAN, ISBN: 1-39\93-066-0, XP002989766 |
Also Published As
Publication number | Publication date |
---|---|
AU6356996A (en) | 1997-01-22 |
WO1997001168A1 (en) | 1997-01-09 |
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