公开(公告)号：US20060065107A1

公开(公告)日：2006-03-30

申请号：US10950325

申请日：2004-09-24

Applicant: Timo Kosonen

Inventor： Timo Kosonen

IPC: G10H7/00

CPC classification number: G10H1/0008 ,  G10H2210/066 ,  G10H2210/086 ,  G10H2230/015 ,  G10H2230/021 ,  G10H2250/161

Abstract: In one aspect thereof this invention provides a method to estimate pitch in an acoustic signal. The method includes initializing a function ƒt and a time t, where t=0, x′0=ƒ0(F0), x′0 is a pitch estimate at time zero and F0 is a frequency of the acoustic signal at time zero; determining at least one pitch estimate using the function x′t=ƒt(Ft) by an iterative process of creating ƒt+1(Ft+1) based at least partly on pitch estimates x′t, x′t−1, x′t−2, x′t−3, . . . , and functions ƒt(Ft), ƒt−1(Ft−1), ƒt−2(Ft−2), ƒt−3(Ft−3) . . . and incrementing t; and calculating at least one final pitch estimate. Embodiments of this invention can be applied to pitch extraction with various different input acoustic signal characteristics, such as just intonation, pitch shift in the frequency domain, and non-12-step-equal-temperament tuning.

Abstract translation: 在其一个方面，本发明提供了估计声信号中的音调的方法。 该方法包括初始化函数f T t和时间t，其中t = 0，x'0 0 = f 0 0（F 1 / 0＆lt; 0＆gt;）是0时刻的音调估计，F 0是在0时刻的声信号的频率; 通过使用函数x'的方法来确定至少一个音调估计，该迭代过程产生f 至少部分地基于间距估计x't'，t't + 1（F t t + 1），x't-1 < ，x'T-2，x'，t-3，...， 。 。 ，和f（t-1），f t-1（F t-1），f （F-t-2），f t-3（F t-3）。 。 。 并增加t; 并计算至少一个最终间距估计。 本发明的实施例可以应用于具有各种不同输入声信号特征的音调提取，例如只是语调，频域中的音调偏移以及非12阶等等调谐。

公开(公告)号：US06448487B1

公开(公告)日：2002-09-10

申请号：US09430294

申请日：1999-10-29

Applicant: Jack W. Smith

Inventor： Jack W. Smith

IPC: G10H138

CPC classification number: G10H1/44 ,  G10H1/20 ,  G10H1/383 ,  G10H3/125 ,  G10H3/186 ,  G10H2210/335 ,  G10H2210/471 ,  G10H2210/581 ,  G10H2210/586 ,  G10H2210/596 ,  G10H2210/601 ,  G10H2210/621 ,  G10H2210/626 ,  G10H2250/161

Abstract: A musical instrument and a method of operating it. An instrument and method which retunes and adjusts volumes in response to the chord being sustained and the way that chord is voiced. The instrument is capable of producing tones, the intervals between which are equal tempered intervals of a twelve note octave, and tones, the intervals between at least some of which are determined by identifying at least selected ones of the notes the instrument is being commanded to produce. The method includes identifying the at least selected ones of the notes the instrument is being commanded to produce, providing a map for mapping the identified notes to a chord type, identifying a note in that chord type, and substituting a frequency closer to a harmonic of the identified note for the frequency of at least one harmonic of at least one other note the instrument is being commanded to produce.

Abstract translation: 一种乐器及其操作方法。 一种用于响应于和弦被维持的音调和调节音量的乐器和方法以及和弦的声音。 仪器能够产生音调，它们之间的间隔是十二音符倍频程的相等回火间隔和音调，其中至少一些之间的间隔通过识别仪器被指令的至少一个笔记来确定 生产。 该方法包括识别仪器被命令产生的至少一个选定的音符，提供用于将所识别的音符映射到和弦类型的映射，识别该和弦类型的音符，并且代替更接近谐波的频率 所识别的至少一个谐波的频率的音符至少是另一个音符，正在被指令产生。

公开(公告)号：US4616546A

公开(公告)日：1986-10-14

申请号：US718186

申请日：1985-03-29

Applicant: Yasuji Uchiyama ,  Hideo Suzuki

Inventor： Yasuji Uchiyama ,  Hideo Suzuki

IPC: G10H7/08 ,  G10H7/10 ,  G10H1/00

CPC classification number: G10H7/10 ,  G10H7/08 ,  G10H2230/201 ,  G10H2250/161 ,  Y10S84/02 ,  Y10S84/20

Abstract: An electronic musical instrument is provided of the type in which a musical tone signal is formed by executing computations according to a mathematical formula such as a frequency modulation formula. Tone formation of each of musical tone signals to be simultaneously formed is assigned to each time-division-multiplexed time channel which is cyclically repeated over cycles of a plurality of time slots. A computation for forming each single musical tone is divided into a plurality of sub-computations, and those subcomputations are executed respectively using a plurality of cycles of time slots of each single time channel. Thus tone formation according to a complex computation formula is realized. Parameters necessary for the computation are generated respectively for each time slot so that any computational formula is adopted as desired by selecting predetermined parameters for each time slot.

Abstract translation: 提供了通过根据诸如频率调制公式的数学公式执行计算来形成乐音信号的类型的电子乐器。 要同时形成的每个乐音信号的音调形成被分配给在多个时隙的周期上循环重复的每个时分复用时间信道。 用于形成每个单音乐的计算被分成多个子计算，并且分别使用每个单个时间信道的多个时隙周期来执行那些子计算。 因此，实现了根据复杂计算公式的色调形成。 为每个时隙分别产生计算所需的参数，以便通过选择每个时隙的预定参数，根据需要采用任何计算公式。

公开(公告)号：US4351212A

公开(公告)日：1982-09-28

申请号：US141826

申请日：1980-04-21

Applicant: Shimaji Okamoto ,  Yohei Nagai

Inventor： Shimaji Okamoto ,  Yohei Nagai

IPC: G10H1/18 ,  G10H7/02 ,  G10H7/06 ,  G10H1/00

CPC classification number: G10H7/06 ,  G10H2250/161

Abstract: An electronic musical instrument comprises a note code producer for producing note codes respectively having n bits representing juxtaposed notes aligned by a semitone interval step. The note codes to be generated are selected from a binary code table consisting of successively aligned binary values corresponding to an order of alignment of the notes in a musical scale and the table omits either one of the largest and smallest values to be represented by the lowest m bits (n>m). A modified note code generator produces modified note codes by repetitively adding the lowest m bits of each note code to further lower order digits below the least significant bit of each note code, and a sound system generates musical tones having frequencies corresponding to the modified note codes.

Abstract translation: 电子乐器包括用于产生音符代码的音符代码生成器，分别具有表示以半音间隔步长对齐的并置音符的n位的音符代码。 要生成的音符代码从二进制代码表中选择，该二进制代码表由对应于音阶中的音符的排列顺序的连续排列的二进制值组成，并且该表省略了由最低值表示的最大值和最小值中的任一个 m位（n> m）。 经修改的音符代码生成器通过将每个音符代码的最低m位重复地添加到每个音符代码的最低有效位之下的更低位数字产生修改的音符代码，并且声音系统产生具有对应于修改的音符代码的频率的乐音 。

公开(公告)号：US4227433A

公开(公告)日：1980-10-14

申请号：US76561

申请日：1979-09-18

Applicant: Masanobu Chibana

Inventor： Masanobu Chibana

IPC: G10H7/00 ,  G10H1/06

CPC classification number: G10H7/008 ,  G10H2250/161

Abstract: An electronic musical instrument is of a waveshape memory read out type which includes a waveshape memory device for storing amplitude values at respective sampling points in one period of a new musical tone waveshape to be generated subsequent to a present musical tone waveshape stored in another waveshape memory device, first calculating means for calculating differences in amplitude values at respective sampling points stored in corresponding addresses of the two waveshape memory devices respectively; renewal rate control means for generating a waveshape renewal signal having a period corresponding to difference information produced by the first calculating means, and renewal means for effecting renewal of the memory content of said another waveshape memory device at a rate corresponding to the period of the waveshape renewal signal.

Abstract translation: 一种电子乐器是一种波形存储器读出型，其包括用于在存储在另一波形存储器中的当前乐音波形之后生成的新音乐波形的一个周期中的相应采样点处存储振幅值的波形存储器件 装置，第一计算装置，用于分别计算存储在两个波形存储器件的相应地址中的各个采样点处的振幅值的差异; 更新率控制装置，用于产生具有对应于由第一计算装置产生的差分信息的周期的波形更新信号;以及更新装置，用于以对应于波形周期的速率对所述另一波形存储装置的存储器内容进行更新 更新信号。

公开(公告)号：US3992970A

公开(公告)日：1976-11-23

申请号：US630862

申请日：1975-11-11

Applicant: Masanobu Chibana ,  Tsuyoshi Futamase

Inventor： Masanobu Chibana ,  Tsuyoshi Futamase

IPC: G10H7/08 ,  G10H1/08 ,  G10H1/38 ,  G10H7/10 ,  G10F1/00

CPC classification number: G10H7/10 ,  G10H1/08 ,  G10H1/38 ,  G10H2250/161

Abstract: An electronic musical instrument capable of producing any desired combination of two tones of mutually different footage. According to the invention, such combination of tones can be produced from only two tone sources without providing tone sources of an equal number to a total number of footage to be coupled. In view of the fact that musical tone waveshape amplitudes of two coupled tones of different footage can be represented by a multiplication term of a sine wave content and a cosine wave content, these two waveshape contents are individually calculated and then combined to form amplitudes of a composite musical tone waveshape.

Abstract translation: 一种电子乐器，能够产生相互不同镜头的两个色调的任何期望的组合。 根据本发明，可以仅从两个音源产生这种音调的组合，而不需要将相等数量的音源与要耦合的总镜头数量相提供。 考虑到不同画面的两个耦合音调的乐音波形幅度可以由正弦波内容和余弦波内容的乘法项表示，这两个波形内容被单独计算，然后组合以形成幅度 复合音乐波形。

公开(公告)号：US20170287458A1

公开(公告)日：2017-10-05

申请号：US15626147

申请日：2017-06-18

Applicant: Brian James Kaczynski ,  Noam Lavi

Inventor： Brian James Kaczynski ,  Noam Lavi

IPC: G10H5/00 ,  H03M7/16 ,  H03L7/16

CPC classification number: G10H5/002 ,  G06F1/022 ,  G10H2250/101 ,  G10H2250/161 ,  H03L7/091 ,  H03L7/0991 ,  H03L7/0992 ,  H03L7/16 ,  H03L7/181 ,  H03L7/197 ,  H03L2207/50 ,  H03M7/16

Abstract: Methods and digital circuits providing frequency correction to frequency synthesizers are disclosed. An FLL digital circuit is provided that is configured to handle a reference frequency that is dynamic and ranges over a multi-decade range of frequencies. The FLL circuit includes a digital frequency iteration engine that allows for detection of disappearance of a reference frequency. When the digital frequency iteration engine detects that the reference frequency signal is not available, the oscillator generated frequency is not corrected, and the last value of the oscillator generated frequency is held until the reference frequency signal becomes available again. This FLL circuit is also preceded by a low-pass filter which is dynamically tuned to the frequency to which the FLL locks, eliminating harmonic components in the original signal which might otherwise cause errors in frequency estimation.

公开(公告)号：US09253586B2

公开(公告)日：2016-02-02

申请号：US13871260

申请日：2013-04-26

Applicant: Sony Corporation

Inventor： Martin Nystrom ,  Sead Smailagic

IPC: H03G5/00 ,  H03B9/00 ,  H03G3/00 ,  H04S7/00 ,  H03G5/16 ,  H03G3/20

CPC classification number: H04S7/307 ,  G10H2250/161 ,  H03G3/20 ,  H03G5/165

Abstract: A method by an electronic device for controlling a frequency response of audio output includes: receiving an audio signal at the device; estimating a sound pressure level of the audio signal based on one or more attributes or settings of the electronic device and/or the audio signal; generating values of an adaptive loudness control curve along a range of frequencies, wherein the adaptive loudness control curve is generated based on a difference between values of an equal loudness curve at the estimated sound pressure level along and values of an equal loudness curve at a reference sound pressure level; filtering the audio signal using values of the adaptive loudness control curve; and controlling output of the filtered audio signal as an audio output having substantially the same loudness along the range of frequencies.

Abstract translation: 用于控制音频输出的频率响应的电子设备的方法包括：在设备处接收音频信号; 基于电子设备和/或音频信号的一个或多个属性或设置来估计音频信号的声压级; 沿着频率范围产生自适应响度控制曲线的值，其中基于估计的声压级上的相等响度曲线的值与参考的相等响度曲线的值之间的差产生自适应响度控制曲线 声压级; 使用自适应响度控制曲线的值对音频信号进行滤波; 并且将经滤波的音频信号的输出控制为具有沿频率范围具有基本相同响度的音频输出。

公开(公告)号：US20060041753A1

公开(公告)日：2006-02-23

申请号：US10529360

申请日：2003-08-11

Applicant: Jaap Haitsma

Inventor： Jaap Haitsma

IPC: H04L9/00

CPC classification number: G10H1/0058 ,  G10H2250/135 ,  G10H2250/161 ,  G10H2250/235 ,  G10L19/018 ,  H04N1/32122 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/3274

Abstract: Fingerprints are bit strings extracted from a media signal (e.g. an audio or video clip) to identify said media signal. Typically, they are derived from a perceptual property of the signal, for example, the spectral energy distribution of an audio fragment or the luminance distribution of a video image. A method and arrangement for extracting a fingerprint is here disclosed which is robust with respect to shifts of the perceptual property. Such shifts occur, inter alia, when the fingerprint is derived from a logarithmically mapped spectral energy distribution of an audio signal and said audio signal is subjected to speed changes. According to the invention, the fingerprint is not derived from the perceptual property as such, but from its auto-correlation function.

Abstract translation: 指纹是从媒体信号（例如，音频或视频剪辑）提取的位串，以识别所述媒体信号。 通常，它们来自于信号的感知特性，例如音频片段的频谱能量分布或视频图像的亮度分布。 这里公开了一种用于提取指纹的方法和装置，其对于感知特性的变化是鲁棒的。 特别地，当指纹从音频信号的对数映射的频谱能量分布导出并且所述音频信号受到速度变化时，发生这种移位。 根据本发明，指纹不是从知觉性质得到的，而是从其自相关函数得出。

公开(公告)号：US20030033925A1

公开(公告)日：2003-02-20

申请号：US10195073

申请日：2002-07-15

Inventor： Jack W. Smith

IPC: G10H001/38

CPC classification number: G10H1/44 ,  G10H1/20 ,  G10H1/383 ,  G10H3/125 ,  G10H3/186 ,  G10H2210/335 ,  G10H2210/471 ,  G10H2210/581 ,  G10H2210/586 ,  G10H2210/596 ,  G10H2210/601 ,  G10H2210/621 ,  G10H2210/626 ,  G10H2250/161

Abstract: A musical instrument and a method of operating it. An instrument and method which retunes and adjusts volumes in response to the chord being sustained and the way that chord is voiced. The instrument is capable of producing tones, the intervals between which are equal tempered intervals of a twelve note octave, and tones, the intervals between at least some of which are determined by identifying at least selected ones of the notes the instrument is being commanded to produce. The method includes identifying the at least selected ones of the notes the instrument is being commanded to produce, providing a map for mapping the identified notes to a chord type, identifying a note in that chord type, and substituting a frequency closer to a harmonic of the identified note for the frequency of at least one harmonic of at least one other note the instrument is being commanded to produce.

Abstract translation: 一种乐器及其操作方法。 一种用于响应于和弦被维持的音调和调节音量的乐器和方法以及和弦的声音。 仪器能够产生音调，它们之间的间隔是十二音符倍频程的相等回火间隔和音调，其中至少一些之间的间隔通过识别仪器被指令的至少一个笔记来确定 生产。 该方法包括识别仪器被命令产生的至少一个选定的音符，提供用于将所识别的音符映射到和弦类型的映射，识别该和弦类型的音符，并且代替更接近谐波的频率 所识别的至少一个谐波的频率的音符至少是另一个音符，正在被指令产生。