Yamaha Corporation

Takeshi Kikuchi

Kosei Terada

Yutaka Hasegawa

Yuji Koike

Takuya Fujishima

Satoru Umezawa

Takashi Kunii

Kouhei Sumi

Toshikazu Sato

A music analysis apparatus has a feature extractor and an analysis processor. The feature extractor generates a time series of feature values from a sequence of notes which is designated as an object of analysis. The analysis processor computes an evaluation index value which indicates a probability that the designated sequence of notes is present in each of a plurality of reference music pieces by applying a probabilistic model to the time series of the feature values generated from the designated sequence of notes. The probabilistic model is generated by machine learning of the plurality of reference music pieces using time series of feature values obtained from the reference music pieces.

Music analysis apparatus

Data delivery apparatus communicate with a plurality of terminals via a communication network. Member table stores a member ID and attribute data of each member. When a member logs in via a terminal, its communication address is written into the table in association with its member ID. When a command requesting delivery of particular data has been received from a terminal, the delivery apparatus refers to the table, on the basis of the communication address of the terminal having transmitted the command, to determine whether the attribute data corresponding to the member ID is indicative of a predetermined attribute. If so, the delivery apparatus reads out the particular data from a database and broadcasts the particular data to all of terminal apparatus having their respective communication addresses stored in the table. The delivery apparatus can broadcast data, transmitted from a terminal, to all of the members, with reference to the table. The broadcasted data may be stored in a sharing memory so that the data can be transmitted to another terminal having logged in at a later time. On the basis of performance data generated in response to performance of a musical instrument, an image indicative of the contents of the performance is created and then displayed along with a graphic image emulating the musical instrument.

Data delivery apparatus and method, and terminal apparatus

There is provided a multimedia information encoding apparatus and a multimedia information reproducing apparatus which enables synchronzied reproduction of multimedia information such as audio data, video data, and text data and performance information such as MIDI data to be easily performed. The multimedia information encoding apparatus creates multimedia encoded data comprising data packets each having a header section that contains information on reproduction timing, and a data section that at least contains information to be reproduced based on performance information including event information. The event information is converted into corresponding text codes, and the text codes obtained by the conversion are stored as script data in the data sections of the data packets that correspond in reproduction timing to the text codes, and multimedia encoded data in which the data sections contain the event information converted into the text codes is created.

Multimedia information encoding apparatus, multimedia information reproducing apparatus, multimedia information encoding process program, multimedia information reproducing process program, and multimedia encoded data

A user accesses a sound data distribution server by operating a client terminal. The sound data distribution server transmits data for displaying a list of distributable music. The data are displayed on a display unit of the client terminal. While referring to the display on the display unit, the user requests the sound data distribution server for distribution of regular music data. This request is issued from the client terminal. A cellular phone to which the regular music data are to be distributed is specified by data (e.g., a mail address of the cellular phone) input at the client terminal. This enables the sound data distribution server to recognize the cellular phone and distribute the regular music data to the cellular phone.

Content distribution system; content distribution method; distribution server, client terminal, and portable terminal used in the system; and computer readable recording medium on which is recorded a program for operating a computer used in the system

The utilization of various distributed contents is restricted by a simple method, its restriction can be released, and an accurate collection of fees for the contents is made possible. A client terminalsends a request of contents (musical scores) and a key file to a servervia a communication lineIn response to the request of these, a WEB servertransmits the contents stored in a databaseand a key issuing servertransmits the key file. The WEB servercharges a fee when the key file is requested. A viewercan only display the musical scores in the absence of the key file. With the use of the key file, however, the viewercan print the musical scores as well. The key file is formed in accordance with a random value that is synchronized with the timing of an instruction for purchasing the contents.

Musical scores distributing system

A communication device which comprises transfer rate estimation means for estimating transfer rate of media data other than digital audio data before transmission, data amount controlling means for controlling data amount of the digital audio data to be transmitted in accordance with the transfer rate estimated by said transfer rate estimation means, and transmission means for transmitting the audio data whose data amount is controlled by said data amount controlling means and the media data other than the audio data.

Audio data communication

A communication apparatus having value added functions useful for musicians is provided. A tempo signal having a cycle corresponding to a tempo set by a user through an operation device is generated, a musical tone signal equivalent to a metronome sound is generated in accordance with the generated tempo signal, and the metronome sound is generated in accordance with the generated musical tone signal. Therefore, the present invention can contribute to further increasing the added value of a communication apparatus, which is requisite for musicians.

Communications apparatus, control method therefor and storage medium storing program for executing the method

A communication device comprises reception means for receiving externally supplied first time information representing time, time information generation means for generating second time information representing time, time difference detection means for detecting a time difference between the times represented by the received first time information and the second time information generated at a time point at which the first time information is received, and correction means for correcting the second time information generated by said time information generation means based on the received first time information when the time difference is greater than a predetermined value.

Technique for communicating time information

A musical tone information transmitting apparatus that can efficiently transmit musical tone information comprises: a device for inputting musical tone information; a plurality of processing units which jointly process the musical tone information from said input means in distributed processing; a packet generator for measuring an amount of said musical tone information distributedly processed by the plurality of processing units at a predetermined cycle, for extracting and packetizing a predetermined amount of the musical tone information into a first packet when the amount of the musical tone information is greater than the predetermined amount and for further packetizing next musical tone information after said predetermined cycle is lapsed from the time corresponding to the last musical tone information of said first packet; and a device for transmitting said packets generated by said packet generator.

Transmission of musical tone information

A communications apparatus for musical tone information having: an adding unit for adding time information on a common time axis to each of first and second musical tone information; a transmitting unit for transmitting each of the first and second musical tone information added with the time information associated with each of the first and second musical tone information; a receiving unit for receiving the first and second musical tone information and the time information associated with each of the first and second musical tone information, transmitted by the transmitting unit; and an output unit for synchronizing the first and second musical tone information in accordance with the time information and outputting the synchronized first and second musical tone information to a reproduction apparatus.

Process techniques for plurality kind of musical tone information

In addition to MIDI format performance data of MIDI instruments, various other data such as image data (performance scene), voice data (vocal and data of musical instruments other than MIDI instruments) and associated data, is changed to MIDI events which are transmitted with the MIDI format performance data, as MIDI data. At a reception terminal, the MIDI data including the MIDI format performance data and sound/image data is reproduced in accordance with the MIDI specification.

Communications of MIDI and other data

A score recognition apparatus initially reads a given musical score to form an original image data. The original image data is analyzed to successively recognize symbols contained in the musical score to produce a score code data. Then, a synthetic image data of the musical score is reproduced according to the score code data. The score recognition apparatus has a monitor receptive of the original image data and the synthetic image data to display an original image and a synthetic image in parallel to each other. An operation command is inputted to command a screen operation of the displayed image. The pair of the original and synthetic image data are concurrently processed according to the operation command to execute the screen operation of both the original and synthetic images in parallel manner. Further, the pair of the original and synthetic image data are compared with each other to detect a discrepancy portion between the original image and the synthetic image to produce a discrepancy image data. The monitor is controlled according to the discrepancy image data to visually indicate the discrepancy portion.

Musical score recognition apparatus with visual scanning and correction

An image processing device for extracting connected components of image data includes a first image memory for storing image data that contains connected components (e.g., object image data). A processor searches the image data stored in the first image memory to detect a part of the object image data and determines a watching area of the image data in the main rasterizing scan direction on the basis of the detected part of the object image data. The processor then searches the image data to detect a line segment of continuous pixels that is coupled to and includes the watching area. Once, the line segment is detected, the processor cancels the detected line segment from the image data stored in the first image memory and outputs data corresponding to the cancelled line segment. The device also includes a second image memory for storing the detected and cancelled line segment outputted by the processor as a connected component of the image data.

Method and device for extracting a connected component of image data

A recognition apparatus interprets a musical score to produce musical performance data. An image reader is operated for providing score image data representative of the musical score. A memory device is composed of a plurality of memory units, each memory unit being arranged to store a predetermined volume of score image data. The provided score image data is sequentially written into the plurality of the memory units volume by volume. A processor successively retrieves each volume of the written score image data from the memory units and processes the same to interpret the musical score so as to produce the musical performance data. The processor is allowed to write another volume of the score image data into a vacant one of the memory units in parallel to processing the score image data.

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Hamamatsu, Japan

Takeshi Kikuchi