公开(公告)号：US3429978A

公开(公告)日：1969-02-25

申请号：US3429978D

申请日：1965-12-06

Applicant: FREEMAN ALFRED B

Inventor： FREEMAN ALFRED B

IPC: G10H1/10 ,  G10H1/02

CPC classification number: G10H1/10

公开(公告)号：US3347973A

公开(公告)日：1967-10-17

申请号：US39751764

申请日：1964-09-18

Applicant: FREEMAN ALFRED B

Inventor： FREEMAN ALFRED B

IPC: G10H1/10

CPC classification number: G10H1/10

公开(公告)号：US2997611A

公开(公告)日：1961-08-22

申请号：US59532356

申请日：1956-07-02

Applicant: FEINER JACOB S ,  FREEMAN ALFRED B

Inventor： FEINER JACOB S ,  FREEMAN ALFRED B

IPC: H02K19/08

CPC classification number: H02K19/08

公开(公告)号：US3688010A

公开(公告)日：1972-08-29

申请号：US3688010D

申请日：1970-06-11

Applicant: FREEMAN ALFRED B

Inventor： FREEMAN ALFRED B

IPC: G10H1/02 ,  G10H1/12 ,  G10L11/00 ,  G10H3/00

CPC classification number: G10H1/12 ,  G10H1/02 ,  G10H2210/201 ,  G10L25/00 ,  Y10S84/09 ,  Y10S84/10 ,  Y10S84/18

Abstract: Musical tone signals in electrical form are applied to a plurality of formant filters which are tuned dynamically by player operated controls and by electronically generated control signals. Control signal shaping networks or special potentiometer controls are switched in a number of ways to produce different formant frequency response patterns including one similar to that of the human vocal tract producing dipthongs. The disclosure includes filters which are responsive in tuning to a control voltage and filters in which both inductive and capacitive components are varied for tuning so a nearly constant Q is maintained over wide tuning ranges.

Abstract translation: 以电形式的音乐信号被应用于由播放器操作的控制和电子产生的控制信号动态地调谐的多个共振峰滤波器。 控制信号整形网络或特殊电位器控制器以多种方式进行切换，以产生不同的共振峰频率响应模式，包括类似于产生dipthong的人类声道的频率响应模式。 本公开包括在调谐到控制电压时响应的滤波器和其中电感和电容分量都被改变以进行调谐的滤波器，使得在宽的调谐范围内保持几乎恒定的Q。

公开(公告)号：US3548066A

公开(公告)日：1970-12-15

申请号：US3548066D

申请日：1968-07-29

Applicant: FREEMAN ALFRED B

Inventor： FREEMAN ALFRED B

IPC: G10H1/38 ,  G10H1/00 ,  G10H5/02

CPC classification number: G10H1/383 ,  G10H2210/616 ,  G10H2210/626 ,  Y10S84/22

公开(公告)号：US2317900A

公开(公告)日：1943-04-27

申请号：US44024042

申请日：1942-04-23

Applicant: FREEMAN ALFRED B

Inventor： FREEMAN ALFRED B

IPC: A01K83/00

CPC classification number: A01K83/00

公开(公告)号：US3921491A

公开(公告)日：1975-11-25

申请号：US35421173

申请日：1973-04-25

Applicant: FREEMAN ALFRED B

Inventor： FREEMAN ALFRED B

IPC: G10H1/38 ,  G10H1/00 ,  G10H5/02

CPC classification number: G10H1/383 ,  G10H2210/596 ,  G10H2210/601 ,  G10H2210/616 ,  G10H2210/626 ,  Y10S84/22 ,  Y10S84/25

Abstract: An improved system is provided for automatically playing bass notes for root and fifth parts of manually held accompaniment chords, including diminished and augmented chords, and for performing pedal sustain keying functions. Latching circuits are provided which respond to actuation of playing keys or pedals and which store the response to the last pedal actuated. The system also includes circuitry for keying bass tones for actuated pedals and for the root and fifth parts of manually played chords. This circuitry includes a set of gates which are each enabled by an associated latching circuit, inhibited by other latching circuits, and inhibited by outputs from other operated gates. The system further includes keying bus sensing and controllable ratio frequency dividers to cover a multiple octave range and to reduce the number of pins required for an integrated circuit pack to implement the system.

Abstract translation: 提供了一种改进的系统，用于自动播放根和第五部分手动伴奏和弦的低音音符，包括减小和增强的和弦，以及用于执行踏板维持键控功能。 提供了锁定电路，其响应于播放键或踏板的致动，并且将响应存储到启动的最后踏板上。 该系统还包括用于键入用于致动踏板的低音音调和用于手动演奏和弦的根和第五部分的电路。 该电路包括一组门，其各自由相关联的锁存电路使能，由其他锁存电路禁止，并被来自其他被操作的门的输出禁止。 该系统还包括键控总线感测和可控比率分频器以覆盖多个倍频程范围并且减少集成电路板实现系统所需的引脚数量。

公开(公告)号：US3628157A

公开(公告)日：1971-12-14

申请号：US3628157D

申请日：1970-02-02

Applicant: FREEMAN ALFRED B

Inventor： FREEMAN ALFRED B

IPC: G10H1/40 ,  H03K5/15 ,  H03K1/00

CPC classification number: G10H1/40 ,  G10H2210/361 ,  H03K5/15

Abstract: A time-point generator includes a polystage multivibrator for producing pulse signals of a predetermined frequency and spacing, a logic sequencer controlled by said multivibrator, means connected to the multivibrator for changing the spacing of some of the pulses, and gating means controlled by the output of the multivibrator and by the output of the logic sequencer, the timepoint generator being disclosed as forming part of an automatic rhythm device.

公开(公告)号：US3590129A

公开(公告)日：1971-06-29

申请号：US3590129D

申请日：1969-04-23

Applicant: FREEMAN ALFRED B

Inventor： FREEMAN ALFRED B

IPC: G10H1/38 ,  G10H1/00 ,  G10H5/00

CPC classification number: G10H1/383 ,  Y10S84/22

Abstract: The 12 playing keys of an octave range on a standard keyboard each apply a set of chord tone signals to a chord modulator and the root and fifth parts also through input selection gates to a bass divider. Auxiliary controls or an automatic rhythm device drives the input selection gates to alternate the root and fifth parts in the bass and also drives the chord modulator and a bass keyer for various rhythmic patterns of chord and bass. A musical key selector picks any of six pairs of musical keys and controls the tone signals responsive to the playing keys so the chords produced are diatonic chords of the pair of selected musical keys. Other auxiliary controls allow the player to add or delete chord parts and to change the types of chords. Diode keyers feeding into current mixers allow multiple drives without introducing crosstalk and so minimize the number of keyers required.