GB1245565A - Tone generating apparatus for musical instrument - Google Patents
Tone generating apparatus for musical instrumentInfo
- Publication number
- GB1245565A GB1245565A GB04256/70A GB1425670A GB1245565A GB 1245565 A GB1245565 A GB 1245565A GB 04256/70 A GB04256/70 A GB 04256/70A GB 1425670 A GB1425670 A GB 1425670A GB 1245565 A GB1245565 A GB 1245565A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stud
- contact
- giving
- damper
- piano
- 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.)
- Expired
Links
- 239000003990 capacitor Substances 0.000 abstract 2
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 abstract 1
- 229910002113 barium titanate Inorganic materials 0.000 abstract 1
- 238000013016 damping Methods 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 230000000994 depressogenic effect Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
Classifications
-
- 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
- G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
- G10H1/04—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation
- G10H1/053—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only
- G10H1/055—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only by switches with variable impedance elements
- G10H1/0556—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only by switches with variable impedance elements using piezoelectric means
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
1,245,565. Envelope shaping apparatus. WURLITZER CO. 24 March, 1970 [26 March, 1969], No. 14256/70. Heading G5J. [Also in Division H1] A piezo transducer 22 is impulsively excited by a hammer 14 in a piano-type action, and the voltage so produced causes a capacitor 62 to be charged, the latter discharging through resistor 60 alone when damper contact 28 is open giving profile 82, or through resistors 60 and 64 when the contact 28 is closed giving profile 86, the resulting signal being used to provide an envelope for oscillations from the generator 68. The loudness of the sound produced is thus dependent on the pressure on the key (10), Fig. 1 (not shown), and the damper contact 28 is opened when the key (10) is depressed, giving a sustaining effect. The capacitor 62 is charged via a Darlington pair 54, 56, normally cut-off. The time constants of the discharge circuit are varied with pitch, to imitate the damping characteristics of a piano. The piezo transducer (22), Fig. 3 (not shown), is a disc of barium titanate, with silvered faces (36, 38) and is mounted on a metallic rail (20), Fig. 2 (not shown), by a plastics stud 24 resiliently held by clip 48, or by an integral rubber stud (24a), Fig. 5 (not shown). The hammer 14 strikes the head of the stud, and in the latter case, lateral spreading of the head (44a) gives increased voltage output. The damper base (26), Fig. 1 (not shown), may be fixed to, or integral with the rail (20).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US81817969A | 1969-03-26 | 1969-03-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1245565A true GB1245565A (en) | 1971-09-08 |
Family
ID=25224885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB04256/70A Expired GB1245565A (en) | 1969-03-26 | 1970-03-24 | Tone generating apparatus for musical instrument |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3588310A (en) |
| DE (1) | DE2014302A1 (en) |
| GB (1) | GB1245565A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4382251A (en) | 1980-09-23 | 1983-05-03 | Casio Computer Co., Ltd. | Envelope control device for piezoelectric buzzer |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3711617A (en) * | 1970-08-20 | 1973-01-16 | Columbia Broadcasting Syst Inc | Electronic piano with thump-generating means |
| US4299153A (en) * | 1979-08-10 | 1981-11-10 | The Wurlitzer Company | Touch responsive envelope control for electronic musical instrument |
| US4333377A (en) * | 1979-08-17 | 1982-06-08 | Acoustic Standards | Tone generation system for electronic musical instrument |
| US4342246A (en) * | 1980-06-24 | 1982-08-03 | Cbs Inc. | Multiple voice electric piano and method |
| DE3342558C1 (en) * | 1983-11-25 | 1984-09-13 | Matth. Hohner Ag, 7218 Trossingen | Arrangement in an electronic keyboard musical instrument |
| US7323632B2 (en) * | 2003-08-19 | 2008-01-29 | Martin Richard Wachter | Percussion transducer |
-
1969
- 1969-03-26 US US818179*A patent/US3588310A/en not_active Expired - Lifetime
-
1970
- 1970-03-24 GB GB04256/70A patent/GB1245565A/en not_active Expired
- 1970-03-25 DE DE19702014302 patent/DE2014302A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4382251A (en) | 1980-09-23 | 1983-05-03 | Casio Computer Co., Ltd. | Envelope control device for piezoelectric buzzer |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2014302A1 (en) | 1970-10-08 |
| US3588310A (en) | 1971-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4067253A (en) | Electronic tone-generating system | |
| US3935783A (en) | Electronic piano circuit | |
| US3429976A (en) | Electrical woodwind musical instrument having electronically produced sounds for accompaniment | |
| US3288907A (en) | Electronic musical instrument with delayed vibrato | |
| US4248123A (en) | Electronic piano | |
| US4503745A (en) | Musical instrument | |
| US4365533A (en) | Musical instrument | |
| GB1245565A (en) | Tone generating apparatus for musical instrument | |
| US2414886A (en) | Apparatus for the production of music | |
| US3570357A (en) | Electronic musical instrument with a touch reponsive dc voltage generator | |
| GB1282364A (en) | Electronic instruments for simulating stringed instruments | |
| US4342246A (en) | Multiple voice electric piano and method | |
| GB1519786A (en) | Circuit arrangement for electronic musical instruments | |
| US3636801A (en) | Rim-shot-sound-producing device for an electronic musical instrument | |
| US3637913A (en) | Tone generator employing asymmetrical wave generator rectangular | |
| US4205582A (en) | Percussion envelope generator | |
| GB1393542A (en) | Voice actuated instrument | |
| GB1479177A (en) | Keyboard device for an electronic piano | |
| US3444306A (en) | Electronic musical instrument producing piano effects | |
| GB1385407A (en) | Touch-responsive keying circuit for electronic musical instruments | |
| GB1506747A (en) | Electronic musical instruments | |
| US3617598A (en) | Sawtooth tone generating and keying circuit for an electronic musical instrument | |
| US3969969A (en) | Musical instrument with means for scanning keys | |
| US2001391A (en) | Apparatus for the production of music | |
| US3565999A (en) | Self-biasing percussion system for an electronic organ |