Class / Patent application number | Description | Number of patent applications / Date published |
704265000 | Interpolation | 10 |
20080215330 | Audio Signal Modification - A method of modifying an audio signal comprises the steps of analyzing the input audio signal (x) so as to produce a set of filter parameters (p) and a residual signal (r), modifying the set of filter parameters (p) so as to produce a modified set of filter parameters (p′), and synthesizing an output audio signal (y) using the modified set of filter parameters (p′) and the residual signal (r). The set of filter parameters (p) comprises poles (λ | 09-04-2008 |
20090070117 | Interpolation method - According to an aspect of an embodiment, a method for interpolating a partial loss of an audio signal including a sound signal component and a background noise component in transmission thereof, the method comprising the steps of: calculating frequency characteristic of the background noise in the audio signal; extracting the sound signal component from the audio signal; generating pseudo noise by applying the frequency characteristic of the background noise included in the audio signal to white noise; and generating an interpolation signal by combining the pseudo noise with the extracted sound signal component included in the audio signal to supersede the partial loss of the audio signal. | 03-12-2009 |
20090171666 | Interpolation Device, Audio Reproduction Device, Interpolation Method, and Interpolation Program - An interpolation device ( | 07-02-2009 |
20090326950 | Voice waveform interpolating apparatus and method - A voice waveform interpolating apparatus for interpolating part of stored voice data by another part of the voice data so as to generate voice data. To achieve this, it comprises a voice storage unit, an interpolated waveform generation unit generating interpolated voice data, and a waveform combining unit outputting voice data, a part of the voice data is replaced with another part of the voice data, and further comprises an interpolated waveform setting function unit judging if the other part of the voice data is appropriate as interpolated voice data to be generated by the interpolated waveform generation unit. | 12-31-2009 |
20100228550 | AUDIO SIGNAL INTERPOLATION DEVICE AND AUDIO SIGNAL INTERPOLATION METHOD - An audio signal interpolation method includes: a step of inputting an audio signal in which a higher range component has been cut off; a step of dividing the inputted audio signal into an in-phase component signal and a differential phase component signal; a step of combining the in-phase component signal and a differential phase component signal having a high range component interpolated; a step of performing a high-pass filtering on the combined audio signal and outputting the audio signal formed by a high range component; a step of delaying the inputted audio signal by a time corresponding to a phase delay caused by the interpolation; and a step of adding the delayed audio signal to the audio signal subjected to the high-pass filtering. | 09-09-2010 |
20120265534 | Speech Enhancement Techniques on the Power Spectrum - The method provides a spectral speech description to be used for synthesis of a speech utterance, where at least one spectral envelope input representation is received. In one solution the improvement is made by manipulation an extremum, i.e. a peak or a valley, in the rapidly varying component of the spectral envelope representation. The rapidly varying component of the spectral envelope representation is manipulated to sharpen and/or accentuate extrema after which it is merged back with the slowly varying component or the spectral envelope input representation to create an enhanced spectral envelope final representation. In other solutions a complex spectrum envelope final representation is created with phase information derived from one of the group delay representation of a real spectral envelope input representation corresponding to a short-time speech signal and a transformed phase component of the discrete complex frequency domain input representation corresponding to the speech utterance. | 10-18-2012 |
20120310650 | VOICE SYNTHESIS APPARATUS - In a voice synthesis apparatus, a phoneme piece interpolator acquires first phoneme piece data corresponding to a first value of sound characteristic, and second phoneme piece data corresponding to a second value of the sound characteristic. The first and second phoneme piece data indicate a spectrum of each frame of a phoneme piece. The phoneme piece interpolator interpolates between each frame of the first phoneme piece data and each frame of the second phoneme piece data so as to create phoneme piece data of the phoneme piece corresponding to a target value of the sound characteristic which is different from either of the first and second values of the sound characteristic. A voice synthesizer generates a voice signal having the target value of the sound characteristic based on the created phoneme piece data. | 12-06-2012 |
20130246068 | METHOD AND APPARATUS FOR DECODING AN AUDIO SIGNAL USING AN ADPATIVE CODEBOOK UPDATE - Disclosed are a method and apparatus for decoding a an audiospeech signal using an adaptive codebook update. The method for decoding speechan audio signal includes: receiving an N+1-th normal frame data that is a normal frame transmitted after an N-th frame that is a loss frame data loss; determining whether an adaptive codebook of a final subframe of the N-th frame is updated or notby using the N-th frame and the N+1-th frame; updating the adaptive codebook of the final subframe of the N-th frame by using athe pitch index of the N+1-the frame; and synthesizing an audio a speech signal of by using the N+1-th frame. | 09-19-2013 |
20130282378 | Voice-interactive marketplace providing promotion and promotion tracking, loyalty reward and redemption, and other features - The invention provides a system, method, and business model for an information system and service having business self-promotion, promotion and promotion tracking, loyalty or frequent participant rewards and redemption, audio coupon, ratings, and other features. A business or organization in which consumers call into a service using ordinary telephone, PC, PDA, or other information appliance, and make requests in plain speech for information on goods and/or services, and the service provides responses to the request in plain speech in real-time. Provides operating model for a telephone-based audio-interfaced goods and services information and referral service having merchant self-promotion features, including database provider storing merchant information; an interface for inputting merchant information into the database and for retrieving and editing the information; and an interface for inputting voice commands and data and for receiving merchant information and processed information from the database in response to the input voice commands and data. | 10-24-2013 |
20150112688 | Systems and Methods for Reconstructing an Audio Signal from Transformed Audio Information - A system and method may be configured to reconstruct an audio signal from transformed audio information. The audio signal may be resynthesized based on individual harmonics and corresponding pitches determined from the transformed audio information. Noise may be subtracted from the transformed audio information by interpolating across peak points and across trough points of harmonic pitch paths through the transformed audio information, and subtracting values associated with the trough point interpolations from values associated with the peak point interpolations. Noise between harmonics of the sound may be suppressed in the transformed audio information by centering functions at individual harmonics in the transformed audio information, the functions serving to suppress noise between the harmonics. | 04-23-2015 |