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1. 发明申请

US20230013236A1 Class of potentiometers and analog circuits for linearly mixing signals 有权
公开(公告)号：US20230013236A1
公开(公告)日：2023-01-19
申请号：US17363901
申请日：2021-06-30
申请人： Donald L Baker
发明人： Donald L Baker
IPC分类号： G10H3/18 , G10H3/26
摘要： This invention presents a modular circuit using a 3-gang pot to mix and compensate two signals, to produce an output of approximately uniform volume. One gang, Pga, physically simulates a pseudo-sine function, Q(x), where 0≤×≤1 is fractional pot rotation. A second gang, Pgb, physically simulates a pseudo-cosine function, R(x). The circuits using Pga & Pgb multiply the two input signals by the pseudo-functions, so that the length, SQRT(Q2+R2), of vector (Q,R) stays near one. The third gang, Pgc, modifies the gain of a summer/compensator op-amp, U3, which adds the two modified signals and compensates for variations in amplitude due to phase cancellations between the two input signals, maintaining an output of near-constant amplitude. A number of embodiments consider 3-gang pots with linear, custom nonlinear and mixed tapers. Any of the three gangs may be replaced by a digital pot, driven by a programmable processor. The functions Q(x) and R(x) are also the basis for full-cycle approximate sine and cosine functions, apsin & apcos, which can be used for forward and reverse spectral transformations to predict the output of such a modular circuit from the inputs as modified by the three gangs. The modules can be cascaded or otherwise combined to add more input signals to the output. The primary application is humbucking pair signals from hum-matched single-coil electric guitar pickups, but there may be applications in other fields.

2. 发明授权

US09401134B2 Acoustic-electric stringed instrument with improved body, electric pickup placement, pickup switching and electronic circuit 有权
标题翻译：具有改进身体，电拾音器放置，拾音开关和电子电路的声电弦乐器
公开(公告)号：US09401134B2
公开(公告)日：2016-07-26
申请号：US14338373
申请日：2014-07-23
申请人： Donald L. Baker
发明人： Donald L. Baker
IPC分类号： G10H3/18 , G10H3/22 , G10D1/08
CPC分类号： G10H3/22 , G10D1/085 , G10H3/143 , G10H3/146 , G10H3/183 , G10H3/187 , G10H2220/481 , G10H2220/505
摘要： An electric-acoustic stringed instrument has a removable, adjustable and acoustic artwork top with a decorative bridge and tailpiece; a mounting system for electric string vibration pickups that allows five degrees of freedom in placement and orientation of each pickup anyplace between the neck and bridge; a pickup switching system that provides K*(K−1)/2 series-connected and K*(K−1)/2 parallel-connected humbucking circuits for K matched single-coil pickups; and an on-board preamplifier and distortion circuit, running for over 100 hours on two AA cells, that provides control over second-and third-harmonic distortion. The switched pickups, and up to M=12 switched tone capacitors provide up to M*K*(K−1) tonal options, plus a linear combination of linear, near second-harmonic and near-third harmonic signals, preamp settings, and possible additional vibration sensors in or on the acoustic top.
摘要翻译：电声弦乐器具有可移动，可调节和声学的艺术品顶部，具有装饰桥和尾座; 用于电动串振动拾取器的安装系统，其允许在颈部和桥梁之间任何位置的每个拾音器的放置和定向的五个自由度; 提供用于K匹配单线圈拾取器的K *（K-1）/ 2串联和K *（K-1）/ 2并联连接电路的拾取开关系统; 以及板载前置放大器和失真电路，在两个AA电池上运行超过100小时，可以控制二次和三次谐波失真。开关式拾音器和多达M = 12个开关音调电容器可提供高达M * K *（K-1）色调选项，以及线性，近二次谐波和近三次谐波信号，前置放大器设置和在声学顶部中或之上可能的附加振动传感器。

3. 发明授权

US10380986B2 Means and methods for switching odd and even numbers of matched pickups to produce all humbucking tones 有权
公开(公告)号：US10380986B2
公开(公告)日：2019-08-13
申请号：US16139027
申请日：2018-09-22
申请人： Donald L Baker
发明人： Donald L Baker
IPC分类号： G10H3/18 , G10H1/46 , G10H1/18 , G10H3/22 , G10H1/34
摘要： This invention discloses a switching system for any odd or even number of two or more matched vibrations sensors, such that all possible circuits of such sensors that can be produced by the system are humbucking, rejecting external interferences signals. The sensors must be matched, especially with respect to response to external hum and internal impedance, and be capable of being made or arranged so that the responses of individual sensors to vibration can be inverted, compared to another matched sensor, placed in the same physical position, while the interference signal is not. Such that for 2, 3, 4, 5, 6, 7 and 8 sensors, there exist 1, 6, 25, 90, 301, 966 and 3025 unique humbucking circuits, respectively, with signal outputs that can be either single-ended or differential. Embodiments of switching systems include electro-mechanical switches, programmable switches, solid-state digital-analog switches, and micro-controller driven solid state switches using time-series to spectral-series transforms to pick the order of tones from bright to warm and back.

4. 发明申请

US20160027422A1 Acoustic-electric stringed instrument with improved body, electric pickup placement, pickup switching and electronic circuit 有权
标题翻译：具有改进身体，电拾音器放置，拾音开关和电子电路的声电弦乐器
公开(公告)号：US20160027422A1
公开(公告)日：2016-01-28
申请号：US14338373
申请日：2014-07-23
申请人： Donald L. Baker
发明人： Donald L. Baker
IPC分类号： G10H3/22 , G10D1/08
CPC分类号： G10H3/22 , G10D1/085 , G10H3/143 , G10H3/146 , G10H3/183 , G10H3/187 , G10H2220/481 , G10H2220/505
摘要： An electric-acoustic stringed instrument has a removable, adjustable and acoustic artwork top with a decorative bridge and tailpiece; a mounting system for electric string vibration pickups that allows five degrees of freedom in placement and orientation of each pickup anyplace between the neck and bridge; a pickup switching system that provides K*(K−1)/2 series-connected and K*(K−1)/2 parallel-connected humbucking circuits for K matched single-coil pickups; and an on-board preamplifier and distortion circuit, running for over 100 hours on two AA cells, that provides control over second- and third-harmonic distortion. The switched pickups, and up to M=12 switched tone capacitors provide up to M*K*(K−1) tonal options, plus a linear combination of linear, near second-harmonic and near-third harmonic signals, preamp settings, and possible additional vibration sensors in or on the acoustic top.
摘要翻译：电声弦乐器具有可移动，可调节和声学的艺术品顶部，具有装饰桥和尾座; 用于电动串振动拾取器的安装系统，其允许在颈部和桥梁之间任何位置的每个拾音器的放置和定向的五个自由度; 提供用于K匹配单线圈拾取器的K *（K-1）/ 2串联和K *（K-1）/ 2并联连接电路的拾取开关系统; 以及板载前置放大器和失真电路，在两个AA电池上运行超过100小时，可以控制二次和三次谐波失真。开关式拾音器和多达M = 12个开关音调电容器可提供高达M * K *（K-1）色调选项，以及线性，近二次谐波和近三次谐波信号，前置放大器设置和在声学顶部中或之上可能的附加振动传感器。

5. 发明申请

US20190057679A1 Means and methods for obtaining humbucking tones with variable gains 审中-公开
公开(公告)号：US20190057679A1
公开(公告)日：2019-02-21
申请号：US16156509
申请日：2018-10-10
申请人： Donald L. Baker
发明人： Donald L. Baker
IPC分类号： G10H3/18 , G10H3/22 , G10H1/26 , G10H1/46 , G10H1/34
摘要： This invention discloses and claims means and methods for producing a continuous range of humbucking vibration signals from matched sensors, from bright to warm tones, using variable gains, with either manual control or automatic control by a digital micro-computing device and system. It shows how electronic circuits can control the linear combination of tones from humbucking pairs of sensors, based upon simulating humbucking basis vectors.

6. 发明申请

US20190057678A1 Means and methods for switching odd and even numbers of matched pickups to produce all humbucking tones 审中-公开
公开(公告)号：US20190057678A1
公开(公告)日：2019-02-21
申请号：US16139027
申请日：2018-09-22
申请人： Donald L Baker
发明人： Donald L Baker
IPC分类号： G10H3/18 , G10H1/46 , G10H1/18 , G10H1/34 , G10H3/22
CPC分类号： G10H3/181 , G10H1/06 , G10H1/18 , G10H1/342 , G10H1/46 , G10H3/182 , G10H3/185 , G10H3/186 , G10H3/188 , G10H3/22 , G10H2220/505 , G10H2250/235
摘要： This invention discloses a switching system for any odd or even number of two or more matched vibrations sensors, such that all possible circuits of such sensors that can be produced by the system are humbucking, rejecting external interferences signals. The sensors must be matched, especially with respect to response to external hum and internal impedance, and be capable of being made or arranged so that the responses of individual sensors to vibration can be inverted, compared to another matched sensor, placed in the same physical position, while the interference signal is not. Such that for 2, 3, 4, 5, 6, 7 and 8 sensors, there exist 1, 6, 25, 90, 301, 966 and 3025 unique humbucking circuits, respectively, with signal outputs that can be either single-ended or differential. Embodiments of switching systems include electro-mechanical switches, programmable switches, solid-state digital-analog switches, and micro-controller driven solid state switches using time-series to spectral-series transforms to pick the order of tones from bright to warm and back.

7. 发明申请

US20210407486A1 Electric Stringed Instrument Using Movable Pickups and Humbucking Circuits 有权
公开(公告)号：US20210407486A1
公开(公告)日：2021-12-30
申请号：US17466630
申请日：2021-09-03
申请人： Donald L. Baker
发明人： Donald L. Baker
IPC分类号： G10H3/18
摘要： This invention discloses a hollow-body guitar with a large rectangular sound hole between the neck and bridge, with two pickup mounting slots on each side of the sound hole in removable top plates, including a system of top plates and mounting adapters for 7 different single-coil and dual-coil pickup types. The invention has a system humbucking pickup circuit mixing modules that can be cascaded in linear or tree form to mix all the types of pickups in the output, providing a much wider range of tones than current 3-way and 5-way switching systems. For example, three matched single-coil pickups and one humbucker can be mixed to provide 19 humbucking circuits and 18 circuits with hum. Mixed a different way, using switchless analog circuits, they can produce the tones of all 19 switched humbucking circuits, plus all the continuous variations in between.

8. 发明授权

US11087731B2 Humbucking pair building block circuit for vibrational sensors 有权
公开(公告)号：US11087731B2
公开(公告)日：2021-08-10
申请号：US16985863
申请日：2020-08-05
申请人： Donald L Baker
发明人： Donald L Baker
IPC分类号： G10H3/18 , G10H3/22 , G10H1/26 , G10H1/46 , G10H3/14 , G10H1/34
摘要： This invention eliminates most mechanical switching in vibrational pickup circuits by using variable gains to combine signals of sensors in differential amplifiers as J−1 humbucking pairs for J>1 number of sensors, with the sensors matched to produce the same level and phase of unwanted hum from external sources. It can also combine J>1 number of matched sensors with K>1 number of dissimilar sensors which are matched only to each other in the same manner. This produces not only all the possible mechanically switched humbucking signals, but all the continuously-varying combinations of humbucking signals in between.

9. 发明授权

US10991353B1 Modular single-coil pickup 有权
公开(公告)号：US10991353B1
公开(公告)日：2021-04-27
申请号：US16812870
申请日：2020-03-09
申请人： Donald L Baker
发明人： Donald L Baker
IPC分类号： G10H3/18
摘要： A modular single-coil electromagnetic stringed-instrument pickup, made to mount in replacement of a standard single-coil pickup, using the similar mounting screws and springs, has a replaceable base, core, blade pole and cover. The core unit has two flat coil forms glued to a bar magnet, which together form a trough for the coil. The outsides of the coil forms have printed circuits which form the coil end contacts and an integral electrostatic shield, with interconnect fixed after the coil is wound, so that the core unit can be flipped to change the magnetic polarity of the pickup, and thus the string vibration signal, while maintaining a humbucking pair circuit with equivalent pickup. The base, which can be either non-magnetic or ferro-magnetic material in different shapes and configurations to shape the magnetic field, contains three conductive index pins, which both make contact with the core unit contacts, and transmit string signals to any circuit or electrical contacts on the bottom of the base. The bottom of the base can be endowed with printed circuits, either on the base itself, or in flexible printed circuit soldered to the index pins.
An elastomer shim sits between the core unit and base to give support to the core and microphonic damping. The vertical blade pole sits on top of the core unit, embedded in a non-conductive, non-magnetic horizontal support plate, is held in place by the cover, and separate elastomer shims. The shim between the blade and core unit has a section directly under the blade filled with magnetic material to transmit the magnetic field from the magnet to the blade. The blade pole can be formed, ground or filed to different heights and shapes under the strings, so as to correct for signal strength or to affect the harmonic content of the string signal directly. By trading out the core, base and blade for different types, a wide variety of tonal characters can result, imitating several other types of pickups, as well as providing upgrades from passive pickups to those with active circuits on the base.

10. 发明申请

US20200234685A1 More Embodiments for Common-Point Pickup Circuits in Musical Instruments 审中-公开
公开(公告)号：US20200234685A1
公开(公告)日：2020-07-23
申请号：US16840644
申请日：2020-04-06
申请人： Donald L. Baker
发明人： Donald L. Baker
IPC分类号： G10H3/18 , G10H1/00
摘要： This invention derives directly from U.S. Pat. No. 10,380,986 (Baker, 2019). Primarily, it makes better use of the mode switches, SWa and SWb in FIG. 17 of U.S. Pat. No. 10,380,986, and similar functions in SW1 to SWj+k in the same Figure to provide a better-organized and expanded set of outputs for sets of either 3 single-coil pickups or 3 dual-coil humbucker pickups, in such a way that all of the electro-mechanical controls will fit on a standard-sized electric guitar. In addition, the expanded use of mode switches allows 3 dual-coil humbuckers to partially simulate 3 single-coil pickups with reversible magnets to see what kind of tonal options might result, and justify the inventions in NPPAs Ser. No. 15/917,389 (Baker, 2018), Ser. No. 16/752,670 (Baker, 2020) and Ser. No. 16/812,970 (Baker, 2020). While the invention can be extended to more than 3 pickups with the switch concatenation disclosed in FIG. 19 of U.S. Pat. No. 10,217,450 (Baker, 2019), the digital-analog switching in U.S. Pat. No. 10,217,450 or U.S. Pat. No. 10,380,986 would be more practical.

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