Abstract: Disclosed is an apparatus and a method for producing a continuously transposed cable (CTC) by using a plurality of motors and a plurality of linear servo actuators instead of conventional apparatus and method for mechanically producing the continuously transposed cable by using a cam in the step of driving a continuously transposing head, which is the core of the manufacturing process of the continuously transposed cable.

Abstract: An information processing apparatus is provided which includes a music analysis unit for analyzing an audio signal serving as a capture source for a sound material and for detecting beat positions of the audio signal and a presence probability of each instrument sound in the audio signal, and a capture range determination unit for determining a capture range for the sound material by using the beat positions and the presence probability of each instrument sound detected by the music analysis unit.

Abstract: 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.

Abstract: A musical instrument comprising: (a) plurality of identical vibrating elements; (b) a digitizer associated with each said vibrating element; (c) an estimator that measures the fundamental vibration frequency of said vibrating element; and (d) a synthesized tuner, that conditioned upon at least said estimated fundamental frequency of each vibrating element, generate an audio signal that comprises the characteristics of the original vibration signals with a different fundamental frequency for each said original vibration signal.

Abstract: Provided are a method and apparatus for generating and storing a database that may be searched for music upon a user's request, and a method and apparatus for searching for music corresponding to the user's request. According to an embodiment of the present invention, a plurality of melodies are divided based on phrase breaks and are stored, and a number of melodies which are similar to the user's request are detected from the stored melodies.

Abstract: A musical score position estimating device includes an audio signal acquiring unit, a musical score information acquiring unit acquiring musical score information corresponding to an audio signal acquired by the audio signal acquiring unit, an audio signal feature extracting unit extracting a feature amount of the audio signal, a musical score feature extracting unit extracting a feature amount of the musical score information, a beat position estimating unit estimating a beat position of the audio signal, and a matching unit matching the feature amount of the audio signal with the feature amount of the musical score information using the estimated beat position to estimate a position of a portion in the musical score information corresponding to the audio signal.

Abstract: Systems and method for performing adaptive audio signal processing using music as a measurement stimulus signal. A musical stimuli generator may be used to generate musical stimulus signals composed to provide a stimulus with a spectrum that is substantially dense, and ideally white or pink, over a selected frequency range, so that all frequencies of interest are stimulated. The musical stimuli generator may generate melodically pleasing musical stimulus signals using music clips that include any of: a chromatic sequence, a chromatic sequence including chromatic tones over a plurality of octaves, a chromatic sequence including chromatic tones over a selected plurality of octaves, or an algorithmically composed chromatic sequence, to cover a selected frequency range. The musical stimulus signal may be generated as sound into the environment of use. An audio input picks up the sound from the environment, and a sound processor uses the received musical stimulus signal to determine a transfer function.

Abstract: An acoustic effect impartment apparatus detects striking of any one of strings by a corresponding hammer in an acoustic piano like a grand piano, and vibrates a vibration section with a driving waveform signal obtained by synthesizing sine wave signals of the fundamental frequency and harmonic frequency of the hammer-struck string. Such vibration of the vibration section is transmitted to the keys via a soundboard and bridge of the piano. Thus, vibration is excited in the hammer-struck string by the striking with the hammer but also by the driving waveform signal, so that an acoustic effect corresponding to the driving waveform signal is imparted. Because the driving waveform signal is a simple signal using the sine wave signals corresponding to the fundamental frequency of the string, a natural feeling of the acoustic piano will not be lost even when the acoustic effect is imparted.

Abstract: Multi-channel audio signal processing systems and techniques are provided for electronic instruments having multiple and distinct output channels. Such systems may be used in conjunction with instruments comprising multiple vibrating elements, each with a dedicated signal output. Each received audio signal channel may be directed to a dedicated or shared signal processor for variably changing selected attributes of pitch, timing, timbre, and amplitude in ways that are unique for each signal. Signal processors may be shared using an allocating mixer, allocating switch, or both. An output mixer may be used to mix signal processor output signals into one or more outgoing mixed audio signals. Signal processors, mixers, and switches may be configured by stored program control and controlled in real-time. Real-time pitch variations can be used to change the pitch organization of fixed-pitch vibrating elements within an electronic musical instrument.

Abstract: There is provided a tonal component detection method including performing a time-frequency transformation on an input time signal to obtain a time-frequency distribution, detecting a peak in a frequency direction at a time frame of the time-frequency distribution, fitting a tone model in a neighboring region of the detected peak, and obtaining a score indicating tonal component likeness of the detected peak based on a result obtained by the fitting.

Abstract: A lead tone is generated on the basis of an input tone signal. Meanwhile, a specific pitch of the input tone signal is sequentially detected, from which is detected a normalized pitch corresponding to any one of the musical pitch names. Then, difference information is obtained which pertains to a difference between the specific pitch and the normalized pitch, and a pitch having a given pitch interval from the normalized pitch is determined as a target pitch of a tone signal to be generated. Then, a harmony tone is generated which has a pitch obtained by modulating the target pitch in accordance with the difference information.

Abstract: A computer-implemented method and apparatus for searching for an element sequence, the method comprising: receiving a signal; determining an initial segment of the signal; inputting the initial segment into an element extraction engine to obtain a first element sequence; determining one or more second segments, each of the second segments at least partially overlapping with the initial segment; inputting the second segments into the element extraction engine to obtain at least one second element sequence; and searching for an element subsequence common to at least a predetermined number of sequences of the first element sequence and the second element sequences.

Abstract: The present invention relates generally to a method and system for defining a reference sound position and producing an indicia proximate thereto in relation to one or more sound characteristics. The present invention, in one or more embodiments, provides for displaying a holographic image at a reference sound location which is determined in relation to the identification of one or more target sounds being associated with one or more identified sound characteristics. In other embodiments, the present invention provides for an indicia to appear to be interactive with a reference sound location and may be used in a variety of environments including but not limited to rock theatrics, homeland security and residential security.

Abstract: A music touch control system for an audio performance product is disclosed. The system includes a touch control surface configured and arranged to set and cause activation for playing a tone in an audio performance product; and a visual indicator connected to the touch control surface representing semitones of the tone. The visual indicator has a neutral tone point with +12 semitones above the neutral tone point and ?12 semitones below the neutral point. Touching the control surface along the length thereof causes the audio performance product to play the semitone corresponding to the portion of the touch control surface touched and the visual indicator to indicate the semitone of the selected semitone. The system can be used to represent the playing time of a song and permit navigation instantly to a point in the song.

Abstract: A pitch shift device provides pitch-shifted sounds based on performance sounds generated by an electronic string musical instrument. The pitch shift device has a device that detects vibrato. When vibrato is detected, an interpolation device of a pitch shift control device performs a control of interpolating for a pitch shift change in the musical sound signal accompanying a change in pitch shift information stored in a pitch information storage device and read out by a pitch shift readout device from a group of pitch shift information. Therefore, unnatural pitch changes in pitch-shifted sound can be suppressed.

Abstract: A musical instrument comprising: (a) plurality of identical vibrating elements; (b) a digitizer associated with each said vibrating element; (c) an estimator that measures the fundamental vibration frequency of said vibrating element; and (d) a synthesized tuner, that conditioned upon at least said estimated fundamental frequency of each vibrating element, generate an audio signal that comprises the characteristics of the original vibration signals with a different fundamental frequency for each said original vibration signal.

Abstract: A vocal tuning device for use with a microphone is provided, comprising a housing having a first end and a second end, wherein the first end includes a first connector operably matable with a microphone and capable of receiving an input signal from the microphone in response to a user's voice; a display on the housing capable of providing a visual indicia to a user; processing circuitry within the housing and operably connected between the first connector and the display, wherein the processing circuitry compares the frequency of the input signal to a natural note frequency, and causes the visual indicia to indicate whether the natural note frequency is matched by the frequency of the input signal. In one embodiment, the second end of the device includes a second connector operably matable with a microphone cable.

Abstract: From analog music information in which the sounds of a plurality of musical instruments are mixed, sound data corresponding to the register of the reproduced sound of a bass guitar and sound data corresponding to the register of the reproduced sound of a drum are extracted using a band-pass filter. A drive pulse with a low frequency is generated within the periods of data sections in which the former sound data reaches a predetermined level or higher, and a drive pulse with a high frequency is generated within the periods of data sections in which the latter sound data reaches a predetermined level or higher. A vibrating body in a vibration mechanism unit is resonated by two drive pulses with frequencies, thereby causing vibration according to the reproduced sound of music.

Abstract: A resonance tuner receives and digitizes an analog signal in response to a resonance of a structure thereby creating a plurality of time samples. A series of the time samples are buffered upon burst detection. A power spectrum is estimated by computing a Time-To-Frequency-Transform of the series of time samples and a magnitude of each of the resulting frequency samples is squared. At least one subset associated with at least one spectral peak is selected from the frequency samples. Each spectral peak has at least one sample with a sufficient magnitude and being spectrally adjacent to any other sample in another spectral peak by less than a threshold. A fundamental spectral peak is determined in a fundamental subset including a spectral peak with a sample at the lowest frequency greater than zero. The fundamental spectral peak has the sample with the largest magnitude within the fundamental subset.

Abstract: Game processing apparatus comprises means for indicating successive target actions to be executed by a user, each target action having an associated target time of execution; and scoring logic in which detected user actions are compared with the target actions, the storing logic comprising: an input arrangement by which user actions may be detected; means for comparing a detected sequence of user actions with a sequence of target actions; and means for detecting a timing offset between the sequence of user actions and a corresponding sequence of target actions; in which the comparison of subsequent user actions with respective target actions is arranged to apply the timing offset as a relative displacement between the detected user actions and the target times.

Abstract: Processor-implemented methods and systems for polyphonic note detection are disclosed. The method includes converting a portion of a polyphonic audio signal from a time domain to a frequency domain. The method includes detecting a fundamental frequency peak in the frequency domain. The method then detects a defined number of integer-interval harmonic partials. If a defined number of integer-interval harmonic partials relative to the fundamental frequency peak are detected the fundamental frequency is recorded as a detected note. This process is repeated for each fundamental frequency until each note in the polyphonic audio signal has been detected. For example, this method allows detection of each note in a strummed guitar chord to provide feedback on the tuning of each string in a strummed chord or allows detection and feedback of the timing and pitch errors for guitar chords played along with a reference track.

Abstract: A method and apparatus that enables tuning a piano to exact equal temperament includes beat time template generator. The beat time template generator is provided a fundamental key describing the fixed pitch the reference key is tuned and a secondary key to be tuned. The beat time template generator determines all the harmonics of the fundamental key and the secondary key. A difference beat frequency for all the harmonics is calculated for the fundamental key and secondary key and one beat time is selected as a reference beat time template signal. The reference beat time template signal is then transferred to a speaker for reproduction. A piano tuner then adjusts the strings of the secondary key such that when the fundamental key and the secondary key are struck simultaneously, the beat time of the struck keys is identical to the reference beat time template signal from the beat time template generator.

Abstract: A method for tuning a musical instrument comprising: (a) digitizing the vibration of at least one vibrating element of the instrument; (b) estimating the fundamental frequency of the vibration; and (c) conditioned upon at least the estimated frequency, generate an audio signal that comprises the characteristics of the original vibration signal with a different fundamental frequency.

Abstract: During reproduction of drum-part performance tones with a predetermined performance pattern, comprising a combination of a plurality of drum tone colors, based on automatic performance style data including at least performance pattern data associated with a drum kit defining a combination of the plurality of drum tone colors, a drum kit editing section replaces any one or more of the drum tone colors, defined in the drum kit, with one or more other drum tone colors. Thus, even during an automatic accompaniment, a user can readily replace any one or more of the drum tone colors, defined in the drum kit allocated to the drum part, with one or more other drum tone colors while promptly checking an automatic accompaniment having the other drum tone colors reflected therein.

Abstract: The technology disclosed relates to audio signal processing. It includes a series of modules that individually are useful to solve audio signal processing problems. Among the problems addressed are buzz removal, selecting a pitch candidate among pitch candidates based on local continuity of pitch and regional octave consistency, making small adjustments in pitch, ensuring that a selected pitch is consistent with harmonic peaks, determining whether a given frame or region of frames includes harmonic, voiced signal, extracting harmonics from voice signals and detecting vibrato. One environment in which these modules are useful is transcribing singing or humming into a symbolic melody. Another environment that would usefully employ some of these modules is speech processing. Some of the modules, such as buzz removal, are useful in many other environments as well.

Abstract: The technology disclosed relates to audio signal processing. It includes a series of modules that individually are useful to solve audio signal processing problems. Among the problems addressed are buzz removal, selecting a pitch candidate among pitch candidates based on local continuity of pitch and regional octave consistency, making small adjustments in pitch, ensuring that a selected pitch is consistent with harmonic peaks, determining whether a given frame or region of frames includes harmonic, voiced signal, extracting harmonics from voice signals and detecting vibrato. One environment in which these modules are useful is transcribing singing or humming into a symbolic melody. Another environment that would usefully employ some of these modules is speech processing. Some of the modules, such as buzz removal, are useful in many other environments as well.

Abstract: Methods, systems, and devices are described for automatically converting audio input signal data into musical score representation data. Embodiments of the invention identify a change in frequency information from the audio signal that exceeds a first threshold value; identify a change in amplitude information from the audio signal that exceeds a second threshold value; and generate a note onset event, each note onset event representing a time location in the audio signal of at least one of an identified change in the frequency information that exceeds the first threshold value or an identified change in the amplitude information that exceeds the second threshold value. The generation of note onset events and other information from the audio input signal may be used to extract note pitch, note value, tempo, meter, key, instrumentation, and other score representation information.

Abstract: The technology disclosed relates to audio signal processing. It includes a series of modules that individually are useful to solve audio signal processing problems. Among the problems addressed are buzz removal, selecting a pitch candidate among pitch candidates based on local continuity of pitch and regional octave consistency, making small adjustments in pitch, ensuring that a selected pitch is consistent with harmonic peaks, determining whether a given frame or region of frames includes harmonic, voiced signal, extracting harmonics from voice signals and detecting vibrato. One environment in which these modules are useful is transcribing singing or humming into a symbolic melody. Another environment that would usefully employ some of these modules is speech processing. Some of the modules, such as buzz removal, are useful in many other environments as well.

Abstract: A pitch detection device in which a frequency can be lowered after having maintained both a pitch error accuracy and a response time at practical values to reduce current consumption. Because a number of times of cumulative addition is changed in response to a pitch of a measured signal, a cumulative addition time sum equals or exceeds a constant T_SUM_MIN. Accordingly, a pitch error accuracy of the measured signal achieves a required error accuracy. Furthermore, a frequency of the clock signal is decided using a numerical formula (6) and a numerical formula (7) so that the constant T_SUM_MIN does not exceed a required response time. Accordingly, a response time is within the required response time regardless of whether the frequency of the measured signal is lowered.

Abstract: Audio data representative of a music piece is converted into data components in respective different frequency bands for every unit time interval to generate time frequency data pieces assigned to the respective different frequency bands. From the generated time frequency data pieces, detection is made as to each sustain region in which an effective data component in one of the frequency bands continues to occur during a reference time interval or longer. A feature quantity is calculated from at least one of (1) a number of the detected sustain regions and (2) magnitudes of the effective data components in the detected sustain regions. The music piece is classified in response to the calculated feature quantity.

Abstract: Audio data representative of a music piece is converted into data components in respective different frequency bands for every unit time interval to generate time frequency data pieces assigned to the respective different frequency bands. From the generated time frequency data pieces, detection is made as to each sustain region in which an effective data component in one of the frequency bands continues to occur during a reference time interval or longer. A feature quantity is calculated from at least one of (1) a number of the detected sustain regions and (2) magnitudes of the effective data components in the detected sustain regions. The music piece is classified in response to the calculated feature quantity.

Abstract: A tempo detection device includes: a basic feature amount extracting section which extracts a plurality of types of basic feature amounts from an input audio signal; a weighting and adding section which weights and adds the basic feature amounts of the plurality of types extracted in the basic feature amount extracting section to obtain an addition signal; and a tempo detecting section which detects BPM indicating the tempo on the basis of a periodic component included in the addition signal obtained in the weighting and adding section.

Abstract: Tone pitch information is extracted from the received input note information. A scale is determined on the basis of retrieved tonality information. A reference scale note is determined on the basis of the extracted tone pitch information and the determined scale. A tone pitch of a harmony note is determined by counting scale notes which form the determined scale from the determined reference scale note until reaching a scale note designated by the retrieved degree information.

Abstract: Processor-implemented methods and systems for polyphonic note detection are disclosed. The method includes converting a portion of a polyphonic audio signal from a time domain to a frequency domain. The method includes detecting a fundamental frequency peak in the frequency domain. The method then detects a defined number of integer-interval harmonic partials. If a defined number of integer-interval harmonic partials relative to the fundamental frequency peak are detected the fundamental frequency is recorded as a detected note. This process is repeated for each fundamental frequency until each note in the polyphonic audio signal has been detected. For example, this method allows detection of each note in a strummed guitar chord to provide feedback on the tuning of each string in a strummed chord or allows detection and feedback of the timing and pitch errors for guitar chords played along with a reference track.

Abstract: Methods, systems, and devices are described for automatically converting audio input signal data into musical score representation data. Embodiments of the invention identify a change in frequency information from the audio signal that exceeds a first threshold value; identify a change in amplitude information from the audio signal that exceeds a second threshold value; and generate a note onset event, each note onset event representing a time location in the audio signal of at least one of an identified change in the frequency information that exceeds the first threshold value or an identified change in the amplitude information that exceeds the second threshold value. The generation of note onset events and other information from the audio input signal may be used to extract note pitch, note value, tempo, meter, key, instrumentation, and other score representation information.

Abstract: A music information memory unit stores music information including identification information on each piece of music and pace information thereof. A process control unit selects out a predetermined number of pieces of music information each of whose identification information is to be presented from the music information memory unit. A notification image generating unit generates a notification image in which an object is moved in a scrolling manner based on the pace information of each piece of the selected music information. An image display control unit synthesizes the identification information of each piece of the selected music information with each of the generated notification images, and displays the synthesized image.

Abstract: A method (100) and apparatus (200) are disclosed for transcribing a humming signal into a sequence of musical notes. The method begins by grouping (305) the signal into frames of data samples. Each frame is then processed to derive (320) a frequency distribution for each frames. The frequency distributions are processed to derive (410) a Harmonic Product Energy (HPE) distribution over the frames. The HPE distribution is then segmented (115, 120) to obtain boundaries of musical notes. The frequency distributions of the frames are also processed to derive (412) a fundamental frequency distribution. A pitch for each note is determined (125) from the fundamental frequency distribution.

Abstract: An audio recording is processed and evaluated. A sequence of identified notes corresponding to the audio recording is determined by iteratively identifying potential notes within the audio recording. A rating for the audio recording is determined using a tuning rating and an expression rating. The audio recording includes a recording of at least a portion of a musical composition.

Abstract: The present invention relates to an information processing apparatus, method, and program that are capable of analysing a waveform of a tune involving a modulation with a reduced operation amount. A beat feature extraction section 41 extracts a feature related to a beat from sections of a waveform of a tune involving a modulation, each of the sections corresponding to each beat. A beat feature removal section 42 removes a phase component from a frequency component of each feature extracted. An autocorrelation map generation section 43 generates, based on the features whose phase components have been removed, autocorrelation information representing correlation between one section and another section. This enables the waveform of the tune involving a modulation to be analyzed with a reduced operation amount. The present invention is applicable to an information processing apparatus.

Abstract: Described are methods, systems, and apparatuses, including computer program products, for preventing an unintentional deploy of a bonus in a video game. In one aspect this is accomplished by displaying, on a display in communication with a game platform, a target music data of a musical composition. The game platform receives a music performance input data via the microphone, and also determines if the music performance input data has a predetermined degree of matching with a vocal cue. If so, the performance input data is prevented from executing an improvisation deploy.

Abstract: During operation, a “coarse search” stage applies variable-scale windowing on the query pitch contours to compare them with fixed-length segments of target pitch contours to find matching candidates while efficiently scanning over variable tempo differences and target locations. Because the target segments are of fixed-length, this has the effect of drastically reducing the storage space required in a prior-art method. Furthermore, by breaking the query contours into parts, rhythmic inconsistencies can be more flexibly handled. Normalization is also applied to the contours to allow comparisons independent of differences in musical key. In a “fine search” stage, a “segmental” dynamic time warping (DTW) method is applied that calculates a more accurate similarity score between the query and each candidate target with more explicit consideration toward rhythmic inconsistencies.

Abstract: Methods and systems for simulating the natural tempo of humans are provided. The method utilizes multiples of a basic unit of duration, or quantum unit, of human timing. Unconscious, but precise, compensations occur through imperceptible changes in the timing quantum level. An application of natural human tempo to improve the basic metronome function by humanizing it is also provided. Other ramifications of human tempo simulation are also discussed, including robots and computer games and graphics.

Abstract: The present invention relates to a vibration authoring tool, a vibration authoring method, and a storage medium recorded with the same. To this end, the present invention provides a vibration authoring tool, including: a scale defining unit that defines a scale by controlling the frequencies, amplitudes, and waveforms of the vibration; a clef defining unit that defines a clef by corresponding each staff line of a vibration score to a portion of the frequencies and corresponding head numbers of each note to a portion of the amplitudes; a score authoring unit that authors a score by inputting symbols including notes, rests, and dynamics in the vibration score; and a reproducing unit that reproduces the score authored through the score authoring unit.

Abstract: Methods, systems, and devices are described for automatically converting audio input signal data into musical score representation data. Embodiments of the invention identify a change in frequency information from the audio signal that exceeds a first threshold value; identify a change in amplitude information from the audio signal that exceeds a second threshold value; and generate a note onset event, each note onset event representing a time location in the audio signal of at least one of an identified change in the frequency information that exceeds the first threshold value or an identified change in the amplitude information that exceeds the second threshold value. The generation of note onset events and other information from the audio input signal may be used to extract note pitch, note value, tempo, meter, key, instrumentation, and other score representation information.

Abstract: Described are methods, systems, and apparatuses, including computer program products, for dynamically displaying a pitch range in a rhythm-action game. In one aspect this is accomplished by a game platform dividing a musical composition into a plurality of portions each comprising one or more notes. Then the game platform determines a pitch range between a highest note and a lowest note for each portion. Then the game platform determines a display density for each portion based on the pitch range of each portion, or alternatively, a display density for the entire song based on the greatest pitch range of all portions. Then, the game platform displays each portion within a viewable area. The viewable area has a density alterable based on the portion to be displayed or a position that is alterable based on the portion to be displayed, or has both an alterable position and alterable pitch density.

Abstract: The disclosed subject matter includes, in one aspect, a signal processor having circuitry configured to substitute an assortment of pre-recorded sounds in place of the sound of the guitar. The pre-recorded sounds are triggered by a guitar note that is above a certain threshold. The threshold can be varied, as can the length of time of the substitution.

Abstract: A method of aligning a song with lyrics of the song which comprises the steps of aligning each lyrics fragment of a group of similar lyrics fragments (C) in the lyrics of the song with an audio fragment of a group of similar audio fragments (A4) of the song and aligning each lyrics fragment of a further group of similar lyrics fragments (V2) in the lyrics of the song with an audio fragment of a further group of similar audio fragments (A2) of the song. The method can be performed by an electronic device, possibly enabled by a computer program product. A mapping determined with the method can be transmitted and received by means of a signal and/or stored in a database.

Abstract: A tuning device includes an input terminal configured to receive an input electrical signal and a pitch detector to detect a pitch of the input electrical signal. A manual pitch designator designates a standard pitch from pitches of a scale. An automatic pitch designator designates a standard pitch from a scale that is closest to the pitch of the input electrical signal. A mode selector selects either a manual mode where the standard pitch is designated by the manual pitch designator, or an auto mode where the standard pitch is designated by the automatic pitch designator. A pitch comparator compares the pitch of the input electrical signal and the standard pitch and a display device displays the results of the comparison. The display device is configured such that when the standard pitch is designated by the automatic pitch designator, the standard pitch is not displayed.

Abstract: An audio signal is processed to extract key information by selecting (102) tonal components from the audio signal. A mask is then applied (104) to the selected tonal components to discard at least one tonal component. Note values of the remaining tonal components are determined (106) and mapped (108) to a single octave to obtain chroma values. The chroma values are accumulated (110) into a chromagram and evaluated (112).

Abstract: Signals in two different bands (band components) are extracted from an input signal by an HPF and a BPF, and frequency-shift processing is performed by an MPY. Further, in order to adjust levels of an interface between the band components of shifted frequency to a high-frequency band side and the input signal, band components with which the input signal is adjacent to the high-frequency band extension components are extracted by an HPF. Then, a gain is controlled on the basis of the output values from the HPF and the HPF so as to reduce a difference between the components of shifted frequencies and the level of the input signal by the level correction coefficient calculating unit and the MPY. Then, the shifted components are added to the high-frequency band of the input signal by an ADDER.