Method and apparatus for compressing and generating waveform

A waveform compression method comprising:

• a step of separating input waveform data into a harmonic wave component and a non-harmonic wave component;
• a step of providing a harmonic vector;
• a step of generating first compressed data by vector-quantizing the harmonic wave component, separated from the input waveform data by said step of separating, using the harmonic vector;
• a step of providing a non-harmonic vector;
• and
• a step of generating second compressed data by vector-quantizing the non-harmonic wave component separated from the input waveform data by said step of separating, using the non-harmonic vector,
• wherein said step of separating includes a step of dividing the input waveform data into one or more rendition style sections in accordance with a rendition-style-related characteristic of the input waveform data, and a step of separating waveform data of each of the rendition style sections into a harmonic wave component and a non-harmonic wave component.

A waveform compression method comprising:

• a step of separating input waveform data into a harmonic wave component and a non-harmonic wave component;
• a step of providing a harmonic vector;
• a step of generating first compressed data by vector-quantizing the harmonic wave component, separated from the input waveform data by said step of separating, using the harmonic vector;
• a step of providing a non-harmonic vector;
• and
• a step of generating second compressed data by vector-quantizing the non-harmonic wave component separated from the input waveform data by said step of separating, using the non-harmonic vector,
• wherein said step of generating second compressed data includes a step of generating such second compressed data that includes, for a particular time section, vector information indicative of a specific non-harmonic vector smaller in time length than the particular time section and information indicating that the specific non-harmonic vector should be used repetitively to reproduce a non-harmonic wave component.

A waveform compression method comprising:

• a step of separating input waveform data into a harmonic wave component and a non-harmonic wave component;
• a step of providing a harmonic vector;
• a step of generating first compressed data by vector-quantizing the harmonic wave component, separated from the input waveform data by said step of separating, using the harmonic vector;
• a step of providing a non-harmonic vector;
• and
• a step of generating second compressed data by vector-quantizing the non-harmonic wave component separated from the input waveform data by said step of separating, using the non-harmonic vector,
• wherein said step of generating second compressed data includes a step of generating such second compressed data that includes, for a particular time section, vector information indicative of a plurality of specific non-harmonic vectors smaller in time length than the particular time section and information indicating that the plurality of specific non-harmonic vectors should be used in a predetermined sequence to reproduce a non-harmonic wave component.

A waveform compression method comprising:

• a step of separating input waveform data into a harmonic wave component and a non-harmonic wave component;
• a step of providing a harmonic vector;
• a step of generating first compressed data by vector-quantizing the harmonic wave component, separated from the input waveform data by said step of separating, using the harmonic vector;
• a step of providing a non-harmonic vector;
• and
• a step of generating second compressed data by vector-quantizing the non-harmonic wave component separated from the input waveform data by said step of separating, using the non-harmonic vector,
• wherein said step of generating second compressed data includes a step of generating such second compressed data that includes, for a particular time section, vector information indicative of a plurality of specific non-harmonic vectors smaller in time length than the particular time section and information indicating that the plurality of specific non-harmonic vectors should be used randomly to reproduce a non-harmonic wave component.

A waveform compression apparatus comprising:

• an input device adapted to provide waveform data to be compressed;
• a memory storing a plurality of harmonic vectors and a plurality of non-harmonic vectors;
• and
• a processor coupled with said input device and said memory, said processor being adapted to:
• separate the waveform data, provided by said input device, into a harmonic wave component and a non-harmonic wave component;
• generate first compressed data by vector-quantizing the separated harmonic wave component using any one of the harmonic vectors stored in said memory;
• and
• generate second compressed data by vector-quantizing the separated non-harmonic wave component using any one of the non-harmonic vectors stored in said memory.

A machine-readable storage medium containing a group of instructions to cause said machine to implement a waveform compression method, said method comprising:

• a step of separating input waveform data into a harmonic wave component and a non-harmonic wave component;
• a step of providing a harmonic vector;
• a step of generating first compressed data by vector-quantizing the harmonic wave component, separated from the input waveform data by said step of separating, using the harmonic vector;
• a step of providing a non-harmonic vector;
• and
• a step of generating second compressed data by vector-quantizing the non-harmonic wave component, separated from the input waveform data by said step of separating, using the non-harmonic vector.

A waveform generation method comprising:

• a step of receiving first compressed data including vector information indicative of a harmonic vector and second compressed data including vector information indicative of a non-harmonic vector;
• a step of providing a harmonic vector;
• a step of synthesizing waveform data of a harmonic wave component on the basis of said first compressed data and the harmonic vector indicated thereby;
• a step of providing a non-harmonic vector;
• and
• a step of synthesizing waveform data of a non-harmonic wave component on the basis of said second compressed data and the non-harmonic vector indicated thereby.

A waveform generation apparatus comprising:

• a memory storing a plurality of harmonic vectors and a plurality of non-harmonic vectors;
• and
• a processor coupled with said memory, said processor being adapted to:
• receive first compressed data including vector information indicative of a harmonic vector and second compressed data including vector information indicative of a non-harmonic vector;
• read out, from said memory, the harmonic vector indicated by said first compressed data and synthesize waveform data of a harmonic wave component on the basis of the read-out harmonic vector;
• and
• read out, from said memory, the non-harmonic vector indicated by said second compressed data and synthesize waveform data of a non-harmonic wave component on the basis of the read-out non-harmonic vector.

A machine-readable storage medium containing a group of instructions to cause said machine to implement a waveform generation method, said method comprising:

• a step of receiving first compressed data including vector information indicative of a harmonic vector and second compressed data including vector information indicative of a non-harmonic vector;
• a step of providing a harmonic vector;
• a step of synthesizing waveform data of a harmonic wave component on the basis of said first compressed data and the harmonic vector indicated thereby;
• a step of providing a non-harmonic vector;
• and
• a step of synthesizing waveform data of a non-harmonic wave component on the basis of said second compressed data and the non-harmonic vector indicated thereby.

A waveform compression method comprising:

• a step of providing separately a harmonic wave component and a non-harmonic wave component of waveform data to be compressed;
• a step of detecting periodicity of the harmonic wave component provided by said step of providing;
• a step of dividing the non-harmonic wave component into a plurality of sections on the basis of the periodicity of the harmonic wave component detected by said step of detecting;
• a step of providing a non-harmonic vector;
• and
• a step of generating compressed data of a non-harmonic wave component by vector-quantizing a non-harmonic wave component of each of the sections using the non-harmonic vector.

A waveform compression apparatus comprising:

• a memory storing a plurality of non-harmonic vectors;
• and
• a processor coupled with said memory, said processor being adapted to:
• obtain separately a harmonic wave component and a non-harmonic wave component of waveform data to be compressed;
• detect periodicity of the obtained harmonic wave component;
• divide the obtained non-harmonic wave component into a plurality of sections on the basis of the detected periodicity of the harmonic wave component;
• generate compressed data of a non-harmonic wave component by vector-quantizing a non-harmonic wave component of each of the sections using the non-harmonic vector stored in said memory.

A machine-readable storage medium containing a group of instructions to cause said machine to implement a waveform compression method, said method comprising:

• a step of providing separately a harmonic wave component and a non-harmonic wave component of waveform data to be compressed;
• a step of detecting periodicity of the harmonic wave component provided by said step of providing;
• a step of dividing the non-harmonic wave component into a plurality of sections on the basis of the periodicity of the harmonic wave component detected by said step of detecting;
• a step of providing a non-harmonic vector;
• and
• a step of generating compressed data of a non-harmonic wave component by vector-quantizing a non-harmonic wave component of each of the sections using the non-harmonic vector.

A waveform generation method comprising:

• a step of receiving compressed data of a non-harmonic wave component including vector information indicative of a non-harmonic vector;
• a step of providing waveform data of a harmonic wave component to be generated simultaneously;
• a step of providing a non-harmonic vector;
• a step of selecting a non-harmonic vector on the basis of the compressed data of the non-harmonic wave component;
• a step of performing stretch/contraction control of a time-axial length of the non-harmonic vector selected by said step of selecting, in accordance with periodicity of the waveform data of the harmonic wave component;
• and
• a step of synthesizing waveform data of a non-harmonic wave component on the basis of the non-harmonic vector having been subjected to the stretch/contraction control by said step of controlling.

A waveform generation apparatus comprising:

• a memory storing a plurality of non-harmonic vectors;
• and
• a processor coupled with said memory, said processor being adapted to:
• receive compressed data of a non-harmonic wave component including vector information indicative of a non-harmonic vector;
• select a non-harmonic vector from among the plurality of non-harmonic vectors stored in said memory, on the basis of the vector information in the received waveform data of the non-harmonic wave component;
• perform stretch/contraction control of a time-axial length of the selected non-harmonic vector, in accordance with periodicity of waveform data of a harmonic wave component to be generated simultaneously;
• and
• synthesize waveform data of a non-harmonic wave component on the basis of the non-harmonic vector having been subjected to the stretch/contraction control.

A machine-readable storage medium containing a group of instructions to cause said machine to implement a waveform generation method, said method comprising:

• a step of receiving compressed data of a non-harmonic wave component including vector information indicative of a non-harmonic vector;
• a step of providing waveform data of a harmonic wave component to be generated simultaneously;
• a step of providing a non-harmonic vector;
• a step of selecting a non-harmonic vector on the basis of the compressed data of the non-harmonic wave component;
• a step of performing stretch/contraction control of a time-axial length of the non-harmonic vector selected by said step of selecting, in accordance with periodicity of the waveform data of the harmonic wave component;
• and
• a step of synthesizing waveform data of a non-harmonic wave component on the basis of the non-harmonic vector having been subjected to the stretch/contraction control by said step of controlling.

A waveform compression method comprising:

• a step of providing separately a harmonic wave component and a non-harmonic wave component of waveform data to be compressed;
• a step of dividing the non-harmonic wave component into a plurality of sections on the basis of a waveform shape of the non-harmonic wave component;
• a step of providing a non-harmonic vector;
• and
• a step of generating compressed data of a non-harmonic wave component by vector-quantizing a non-harmonic wave component of each of the sections using the non-harmonic vector.

A waveform compression apparatus comprising:

• a memory storing a plurality of non-harmonic vectors;
• and
• a processor coupled with said memory, said processor being adapted to:
• obtain a non-harmonic wave component of waveform data to be compressed;
• divide the non-harmonic wave component into a plurality of sections on the basis of a waveform shape of the non-harmonic wave component;
• and
• generate compressed data of a non-harmonic wave component by vector-quantizing a non-harmonic wave component of each of the sections using the non-harmonic vector stored in said memory.

A machine-readable storage medium containing a group of instructions to cause said machine to implement a waveform compression method, said method comprising:

• a step of providing separately a harmonic wave component and a non-harmonic wave component of waveform data to be compressed;
• a step of dividing the non-harmonic wave component into a plurality of sections on the basis of a waveform shape of the non-harmonic wave component;
• a step of providing a non-harmonic vector;
• and
• a step of generating compressed data of a non-harmonic wave component by vector-quantizing a non-harmonic wave component of each of the sections using the non-harmonic vector.

A waveform generation method comprising:

• a step of providing waveform data of a harmonic wave component;
• a step of providing compressed data of non-harmonic wave components, respectively, for a plurality of sections,
• a step of providing a non-harmonic vector;
• and
• a step of selecting a non-harmonic vector on the basis of the compressed data of the non-harmonic wave component for each of the sections and generating waveform data of a non-harmonic wave component for each of the sections on the basis of the selected non-harmonic vector,
• wherein a waveform is generated by combining the waveform data of the harmonic wave component and the waveform data of the non-harmonic wave component, the waveform data for a given one of the sections include information indicating that no non-harmonic vector should be used for the given section and thereby waveform data of a harmonic wave component are generated for the given section without a non-harmonic wave component.

A waveform generation method comprising:

• a step of providing waveform data of a harmonic wave component;
• a step of providing compressed data of non-harmonic wave components, respectively, for a plurality of sections,
• a step of providing a non-harmonic vector;
• and
• a step of selecting a non-harmonic vector on the basis of the compressed data of the non-harmonic wave component for each of the sections and generating waveform data of a non-harmonic wave component for each of the sections on the basis of the selected non-harmonic vector,
• wherein a waveform is generated by combining the waveform data of the harmonic wave component and the waveform data of the non-harmonic wave component, the waveform data for a given one of the sections include information indicating that the non-harmonic vector should be used repetitively for the given section and thereby waveform data of a non-harmonic wave component are generated for the given section by repeating the non-harmonic vector.

A waveform generation method comprising:

• a step of providing waveform data of a harmonic wave component in correspondence with a rendition style designated from among a plurality of different rendition styles;
• a step of providing waveform data of a non-harmonic wave component in correspondence with the designated rendition style;
• a step of providing non-harmonic vectors via a memory storing a plurality of non-harmonic vectors;
• and
• a step of, on the basis of the waveform data of the harmonic wave component, selecting a non-harmonic vector from among the plurality of non-harmonic vectors provided via said memory and generating waveform data of a non-harmonic wave component on the basis of the selected non-harmonic vector,
• wherein a waveform corresponding to the designated rendition style is generated by combining the waveform data of the harmonic wave component and the waveform data of the non-harmonic wave component.

A waveform generation apparatus comprising:

• a memory storing a plurality of non-harmonic vectors;
• and
• a processor coupled with said memory, said processor being adapted to:
• generate waveform data of a harmonic wave component in correspondence with a rendition style designated from among a plurality of different rendition styles;
• receive compressed waveform data of a non-harmonic wave component in correspondence with the designated rendition style;
• on the basis of the compressed waveform data of the non-harmonic wave component, select a non-harmonic vector from among the plurality of non-harmonic vectors stored in said memory and generate waveform data of a non-harmonic wave component on the basis of the selected non-harmonic vector;
• and
• generate a waveform corresponding to the designated rendition style by combining the waveform data of the harmonic wave component and the waveform data of the non-harmonic wave component.

A waveform compression method comprising:

• a step of providing separately a harmonic wave component and a non-harmonic wave component of waveform data to be compressed;
• a step of providing a harmonic vector;
• a step of generating first compressed data by vector-quantizing the harmonic wave component, separated from the input waveform data be said step of separating, using the harmonic vector;
• a step of providing a non-harmonic vector;
• and
• a step of generating second compressed data by vector-quantizing the non-harmonic wave component separated from the input waveform data by said step of separating, using the non-harmonic vector.