Yamaha Corporation

Nippon Gakki Seizo Kabushiki Kaisha

Yamaha Corportion

Toshifumi Kunimoto

Chifumi Takeuchi

Masahiro Kakishita

Hideyuki Masuda

Iwao Higashi

Takeshi Komano

Toru Kitayama

Akira Yamauchi

Tomomi Miyata

Mitsuru Fukui

Hideo Suzuki

Tomoyuki Funaki

Kazunobu Kondo

Takaaki Muto

Takao Yamamoto

Kensuke Ide

Yoichiro Ogai

Kenji Ishizuka

Kenichi Tamiya

Tadashi Okano

Hiroyuki Tsuchiya

Norio Suzuki

Kiyoshi Hagino

Norihisa Aoki

Kaoru Kobayashi

Eiichi Takeishi

Takaaki Mutoh

Ryuichi Kawamoto

Hayato Ohshita

Fumitsugu Ohtaka

A dynamics processing method including receiving an input audio signal determining whether a level of the input audio signal exceeds a threshold value, determining whether a first amount of time, that is not specified to a unique value by a first speed at which a gain applied to the input audio signal is changed, has elapsed from when the level of the input audio signal exceeded the threshold value, and changing the gain applied to the input audio signal at the first speed.

Dynamics processing method and dynamics processing device

A method for setting a filter frequency response includes: dividing a target frequency band into multiple first partial bands at a frequency corresponding to an intersection between a first line representative of a target spectrum envelope and a second line representative of a first spectrum envelope derived from smoothing a measured frequency spectrum; and setting a frequency response of a filter corresponding to a first partial band specified by an operator from among the multiple first partial bands, in accordance with a setting operation for setting an adjustment amount performed by the operator with respect to the specified first partial band.

Method and apparatus for setting filter frequency response

User is allowed to designate a desired mode defining the respective numbers of channels and mixing buses, and processing for mixing input signals of the number of channels corresponding to the designated mode is performed repetitively to generate signals for the individual buses. The time of arrival of the last step in the mixing processing for the number of channels, corresponding to the designated mode, is detected to output an accumulation result obtained at the last step, and new accumulation is started with a digital audio signal inputted at a step following the last step. Digital audio signals processed by a first signal processing circuit are stored into a memory and transmitted to a second signal processing circuit via a cascade-connection. The second signal processing circuit adds the audio signal, processed for each of the steps, to audio signals input via the cascade-connection and writes added signal into the memory.

Mixing signal processing apparatus and mixing signal processing integrated circuit

A waveform memory WM stores fast decay waveform data representative of fast decay waveforms of different levels of strength and slow decay waveform data representative of a slow decay waveform of a strong strength. A CPUcontrols a tone generatorto select at least a waveform data according to the level of strength of a touch from among the plurality of fast decay waveform data to read out the selected waveform data from the top address of the waveform data. In addition, the CPUalso controls the tone generatorto read out the slow decay waveform data, starting at an address placed further away from the top of the slow decay waveform data as the level of strength of the touch decreases. The read fast decay waveform data and the read slow decay waveform data is mixed together to be output.

Apparatus for generating musical tone signals based on mixing different decay waveform data

In the case where an automatic reading file composed of plural kinds of detailed parameters stored in a transportable storage device whose attachment is detected has been already read in an apparatus, it is determined whether update, to a currently-read automatic reading file, of an automatic reading file stored in a storage section is carried out or not in accordance with a user's instruction, and is controlled so as to carry out a process. Namely, in the case where an automatic reading file has not been read yet, the automatic reading file stored in the storage section is updated to the currently-read automatic reading file without any condition. On the other hand, if an automatic reading file has been already read, the automatic reading file stored in the storage section may be edited on the basis of it.

Tone signal creating apparatus and method

A plurality of sets of prepared parameters are stored in a parameter memory. A first control knob can be moved over a predetermined operating range in which a plurality of predetermined positions are discretely defined. The plurality of sets of prepared parameters are respectively assigned to the plurality of predetermined positions. When a current operating position of the first control knob is positioned between any two adjacent positions of the plurality of predetermined positions, two sets of prepared parameters are read out from the parameter memory in accordance with the two adjacent positions corresponding to the current operating position of the first control knob, and the read-out two sets of prepared parameters are interpolated in accordance with the current operating position of the first control knob to obtain one set of interpolated parameters. The input signal is subjected to the signal processing using one set of interpolated parameters.

Signal processing device and method of processing signal

Basic tone waveform corresponding to a designated tone color and pitch is generated in each of a plurality of channels. Effect is imparted to the basic tone waveform in accordance with an algorithm for providing a predetermined effect, independently for each of the channels. The effect to be imparted is controlled in accordance with the designated tone pitch, separately for each of the channels. The effect impartment may be conducted using a processor, such as a DSP, executing a predetermined program containing a predetermined effect-imparting algorithm. In one example of the effect-imparting algorithm, a delay loop is employed through which an input exciting signal is circulated while being delayed, and an effect specific to an electromagnetic pickup of an electric guitar can be approximated by controlling the delay amount in the delay loop. In another example of the effect-imparting algorithm, a ransom signal is generated to control a cutoff frequency on the basis of the random signal, the basic tone waveform is filtered in accordance with the thus-controlled cutoff frequency, and the resultant filtered tone waveform is circulated through a delay loop whose delay amount is controlled in accordance with the designated tone pitch.

Tone synthesizing device and method capable of individually imparting

A parameter setting apparatus is provided in an electronic music instrument for editing a configure of parameters in accordance with a manipulation amount to set a tone generator which creates a desired timbre of musical tones upon setting. In the apparatus, a first memory device stores a first subset of parameters containing a Boolean parameter having a first Boolean value and a numerical parameter having a first numerical value. A second memory device stores a second subset of parameters containing the Boolean parameter having a second Boolean value and the numerical parameter having a second numerical value. An operating device provides a manipulation amount for editing parameters. An interpolating device interpolates the first numerical value and the second numerical value in accordance with the manipulation amount to determine an edited numerical value of the numerical parameter. A selecting device selects one of the first Boolean value and the second Boolean value in accordance with the manipulation amount to determine an edited Boolean value of the Boolean parameter. A setting device configure the tone generator with the set of parameters containing the numerical parameter having the edited numerical value and the Boolean parameter having the edited Boolean value.

Music apparatus using boolean and numerical parameters settable by

A musical tone synthesizing apparatus utilizes digital signal processors (DSPs) to realize synthesis of musical-tone waveforms with regard to a variety of tone colors. The apparatus stores microprograms and tone-color parameters in advance. Herein, the microprograms represent musical-tone-synthesis algorithms each synthesizing musical tones of a specific tone color. The tone-color parameters contain common parameters and selective parameters to provide a compatibility between different systems having different scales in hardware and software. The common parameters are commonly shared by the different systems, while the selective parameters are provided for a selective use of the musical-tone-synthesis algorithms. So, the apparatus responds to a selection of the musical-tone-synthesis algorithms, wherein the apparatus executes the selected musical-tone-synthesis algorithm, using the common parameters and at least one of the selective parameters, to synthesize musical-tone waveforms with regard to a desired tone color. Incidentally, it is possible to provide different algorithms with regard to derivative tone colors which derive from a base tone color.

Musical tone synthesizing apparatus having competibility of tone color

An engine exhaust sound synthesizer is fundamentally configured by an exhaust waveform creating unit and an exhaust pipe circuit. The exhaust waveform creating unit creates an exhaust waveform signal based on accel information and engine speed information. Herein, the accel information is subjected to non-linear conversion, representing relationship between an amount of manipulation of an accel manipulator and an engine output, so that an engine output signal is produced. A plurality of exhaust waveforms are stored in advance; hence, one of them is selected based on the engine speed information and engine output signal. Then, the exhaust waveform selected is combined together with the engine output signal so that the exhaust waveform signal is created. The exhaust pipe circuit, simulating behavior of air-pressure waves propagating through pipes of an exhaust system, is designed similar to a waveguide-type circuit which is configured by delay circuits and junctions. So, the exhaust pipe circuit imparts a simulated exhaust-pipe characteristic to the exhaust waveform signal so as to produce the exhaust sound signal representing synthesized exhaust sound of an engine. By controlling the amount of manipulation of the accel manipulator, it is possible to provide realistic exhaust sound, with a high live-audio effect, whose characteristic closely follows behavior of an exhaust action of an actual engine.

Engine exhaust sound synthesizer

A tone setting device includes an operating section for selecting segments in combination from among various segments of exciting mechanisms and structures employed in plural types of musical instruments, and a data supply section supplies tone setting data, corresponding to the combination of the selected segments, as data for setting a characteristic of a tone. By thus combining segments of desired musical instruments, a free tone selection can be conducted easily in such a form where the selected tone color can be readily recognized by a human operator. Also, a plurality of parameters are allocated to a single operator so that the parameters can be simultaneously adjusted by respective unique amounts of change based on operation of the same operator.

Method and device for setting or selecting a tonal characteristic using

A reverberation effect imparting system includes plural comb filters, each of which has a signal delay line and a feedback loop for filtering a delayed output signal from the delay line and feeding the filtered signal back to the input side with a variable loop gain. The device further includes a junction section which receives the respective output signals from the delay lines of the plural comb filters. The junction section controls the received signals with respective variable scattering coefficients and sums up the thus-controlled signals, so as to introduce the summed signal into the feedback loop of each of the comb filters. In this manner, reverberation control according to the waveguide theory is performed by the junction section, while the conventional-type reverberation control is performed by the comb filters. Thus, reverberation can be controlled through a combination of the two controls.

Reverberation effect imparting system

In a buffer memory are stored messages given to a specific task in order of arrival. Messages of same types may be stored in the buffer memory. In a different order from the order of arrival, a processing section performs task processing on the basis of the messages stored in the buffer memory. If two messages of a same type are present in the buffer memory, one of the messages which has arrived later than the other is processed with priority irrespective of the order of arrival, and the other message which has arrived earlier is deleted from the buffer memory. If there is present in the buffer memory such a message instructing transfer of parameters corresponding to a function that is not currently assigned, this message itself is deleted from the buffer memory as being ineffective, so as to process a next message.

Electronic musical instrument performing multi-task processing

An apparatus for synthesizing a musical tone comprises a loop circuit for circulating an input wave form signal through a delay circuit, a wave form memory, and a random modulation circuit for modulating the wave form signal stored in the wave form memory. The random modulation circuit generates a random signal, such as a noise signal. The random signal modulates address data to the wave form memory, so that the read wave form data read out from the wave form memory is delicately varied with time.

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Hamamatsu, Japan

Toshifumi Kunimoto