Abstract:
An input waveform signal representing, for example, a string oscillation is input to a pitch extraction circuit. The pitch extraction circuit extracts a pitch frequency from the input waveform signal, and this pitch frequency is input to a RAM connected to a CPU. On the other hand, LFO data from an LFO is input to a RAM. The CPU detects the amount of variation of the pitch frequency based on the pitch frequency and coverts the amount of variation of the pitch frequency in accordance with a predetermined conversion function. Thereafter the converted value is added to the LFO data to form musical sound control data for imparting a tremolo effect or a vibrato effect. The musical sound production circuit thereby imparts the above effect to the musical sound to be produced.
Abstract:
In an electronic musical instrument which is arranged to produce musical tones belonging to the selected one of many different types of musical instruments and having a number of player-operable selection keys respectively corresponding to the number of types of musical instrument sounds desired, the improvement wherein means is provided for generating a sample tone belonging to that type of musical instrument specified by one of the above-mentioned selection keys at a prescribed pitch and period simply by depressing only once a particular selection key, without taking the trouble of successively depressing individual performance keys, thereby facilitating the selection of a desired type of musical instrument by the player.
Abstract:
A delay time counter in a DSP cyclically counts a sampling clock from zero to a delay time sampling count and issues a delay time interrupt to a CPU each time the sampling clock count reaches the delay time sampling count. The CPU measures a time difference between each time the DSP issues the delay time interrupt and each time sequence clock interrupts occur a number of times corresponding to the delay time. Then, in order to reduce this time difference, the CPU increases or decreases a maximum count that is set to the sequence clock counter. Therefore, in the next delay process, the shift between the time by which the automatic performance is advanced by the CPU (which is equal to the delay time) and the timing of the delay process executed by the DSP (which is also equal in length to the delay time) will be corrected.
Abstract:
Notwithstanding practical limitations imposed by mobile device platforms and applications, truly captivating musical instruments may be synthesized in ways that allow musically expressive performances to be captured and rendered in real-time. Synthetic musical instruments that provide a game, grading or instructional mode are described in which one or more qualities of a user's performance are assessed relative to a musical score. By providing a range of modes (from score-assisted to fully user-expressive), user interactions with synthetic musical instruments are made more engaging and tend to capture user interest over generally longer periods of time. Synthetic musical instruments are described in which force dynamics of user gestures (such as finger contact forces applied to a multi-touch sensitive display or surface and/or the temporal extent and applied pressure of sustained contact thereon) are captured and drive the digital synthesis in ways that enhance expressiveness of user performances.
Abstract:
Methods, systems, and media for performing visualized quantitative vibrato analysis are provided. In some embodiments, a method for analyzing musical vibrato in an audio file is provided, the method comprising: receiving, using a hardware processor, a target note from a user; receiving, using the hardware processor, a time-domain signal representing a piece of music comprising a plurality of notes, wherein the plurality of notes include the target note and the target note is played with a vibrato effect; converting, using the hardware processor, the time-domain signal to a frequency-domain signal; determining, using the hardware processor, a plurality of changes in frequency and intensity of the vibrato effect over time based on the frequency-domain signal; determining, using the hardware processor, a target frequency corresponding to the target note; and displaying, on a display, data about the changes in frequency and intensity of the vibrato effect over time and data about the target frequency.
Abstract:
A system for controlling for at least one string of a musical instrument by selectively exciting or damping vibration of the string is provided. The system includes at least one transducer configured to sense a lateral vibration of the string and/or to apply an actuating force to the string. A controller is configured to determine an actuating signal for driving the actuator to apply a longitudinal actuating force to the string at a termination point of the string. The longitudinal actuating force are operable to modulate a tension of the string that increases and/or damps the lateral vibration and/or selected harmonics thereof.
Abstract:
A system for controlling for at least one string of a musical instrument by selectively exciting or damping vibration of the string is provided. The system includes at least one transducer configured to sense a lateral vibration of the string and/or to apply an actuating force to the string. A controller is configured to determine an actuating signal for driving the actuator to apply a longitudinal actuating force to the string at a termination point of the string. The longitudinal actuating force are operable to modulate a tension of the string that increases and/or damps the lateral vibration and/or selected harmonics thereof.
Abstract:
An advanced MIDI/audio processing system with virtual key-switches. The virtual key-switches are mapped to different musical concepts. As a user presses a key-switch in real time with the playing of musical notes, the musical concept mapped to the key-switch that was pressed is applied. The instrument then switches to a new playing state based on the particular musical concept that was applied. Furthermore, the system is configured to provide a smooth transition between dynamic levels when applying crescendo or diminuendo effects via a modulation wheel. The system also configured to provide enhanced cycling of alternate samples by providing an individual alternate cycle for each note of each articulation in each dynamic level. Furthermore, the system is configured to allow a user to store and recall specific cycle positions, and override an existing cycle to choose a specific alternate sample for a specific note.
Abstract:
A system for producing music from a stringed musical instrument includes a sensor/actuating transducer arrangement coupled to each or all of one or a plurality of the tensioned strings and supervisory system that governs one or more motion controllers associated with the transducer to affect the string vibration through at least one actuator transducer coupled to the string(s) in accordance with technique commands issued by the player of the instrument, the technique commands being recognized by processes in the supervisor from among characteristics of signal features extracted by further processes continuously analyzing the motional behavior of one or more strings.
Abstract:
The present synthesizer generates an underlying spectrum, pitch and loudness for a sound to be synthesized, and then combines the underlying spectrum, pitch and loudness with stored Spectral, Pitch, and Loudness Fluctuations and noise elements. The input to the synthesizer is typically a MIDI stream. A MIDI preprocess block processes the MIDI input and generates the signals needed by the synthesizer to generate output sound phrases. The synthesizer comprises a harmonic synthesizer block (which generates an output representing the tonal audio portion of the output sound), an Underlying Spectrum, Pitch, and Loudness (which takes pitch and loudness and uses stored algorithms to generate the slowly varying portion of the output sound) and a Spectral, Pitch, and Loudness Fluctuation portion (which generates the quickly varying portion of the output sound by selecting and combining Spectral, Pitch, and Loudness Fluctuation segments stored in a database). A specialized analysis process is used to derive the formulas used by the Underlying Spectrum, Pitch, and Loudness and to generate and store the Spectral, Pitch, and Loudness Fluctuation segments stored in the database.