44results about How to "Natural sound" patented technology

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.

A speech synthesis system in a preferred embodiment includes a speech unit storage section, a phonetic environment storage section, a phonetic sequence / prosodic information input section, a plural-speech-unit selection section, a fused-speech-unit sequence generation section, and a fused-speech-unit modification / concatenation section. By fusing a plurality of selected speech units in the fused speech unit sequence generation section, a fused speech unit is generated. In the fused speech unit sequence generation section, the average power information is calculated for a plurality of selected M speech units, N speech units are fused together, and the power information of the fused speech unit is so corrected as to be equalized with the average power information of the M speech units.

Waveform data representative of singing voices of a singing music piece are analyzed to generate melody component data representative of variation over time in fundamental frequency component presumed to represent a melody in the singing voices. Then, through machine learning that uses score data representative of a musical score of the singing music piece and the melody component data, a melody component model, representative of a variation component presumed to represent the melody among the variation over time in fundamental frequency component, is generated for each combination of notes. Parameters defining the melody component models and note identifiers indicative of the combinations of notes whose variation over time in fundamental frequency component are represented by the melody component models are stored into a pitch curve generating database in association with each other.

Variation over time in fundamental frequency in singing voices is separated into a melody-dependent component and a phoneme-dependent component, modeled for each of the components and stored into a singing synthesizing database. In execution of singing synthesis, a pitch curve indicative of variation over time in fundamental frequency of the melody is synthesized in accordance with an arrangement of notes represented by a singing synthesizing score and the melody-dependent component, and the pitch curve is corrected, for each of pitch curve sections corresponding to phonemes constituting lyrics, using a phoneme-dependent component model corresponding to the phoneme. Such arrangements can accurately model a singing expression, unique to a singing person and appearing in a melody singing style of the person, while taking into account phoneme-dependent pitch variation, and thereby permits synthesis of singing voices that sound more natural.

A method of providing an improved learning environment in a classroom setting area in which at least one human listener is attempting to focus on at least one speech sound source in the presence of at least one distracting sound source is disclosed. At least one electrical sound masking signal is generated by at least one sound masking signal generator as output, received by at least one system controller, and then provided to one or more loudspeaker assemblies. At least one acoustic sound masking signal corresponding to the at least one electrical sound masking signal is emitted by the one or more loudspeaker assemblies into the classroom setting area, providing an essentially uniform level of acoustic sound masking signal, thus improving the ability of the human listener(s) to focus on the intended speech sound source in the presence of the distracting sound source.

A system for actively damping the low-frequency coloration of sound in a listening room is provided comprising an acoustic wave sensor, an acoustic wave actuator, and an electronic feedback controller. The listening room defines at least one mode of low-frequency coloration. The acoustic wave actuator is substantially collocated with the acoustic wave sensor within the listening room. The electronic feedback controller is operative to generate a signal at its output by applying a feedback controller transfer function. The feedback controller transfer function comprises a second order differential equation including a first variable representing a predetermined damping ratio and a second variable representing a tuned natural frequency and creates a 90 degree phase lead substantially at the resonant frequencies of at least one mode of low-frequency coloration. The feedback controller output signal represents a rate of change of volume velocity to be produced by the acoustic wave actuator. Further provided are methods for actively damping the low-frequency coloration of sound within a listening room and systems for actively treating noise within a fluid-carrying duct, including those which employ active low- and high-pass acoustic filters.

The invention relates to an audio editing method and apparatus, an electronic device and a storage medium. The method comprises steps of obtaining a modified text obtained by modifying an original text of a known to-be-edited audio according to a known modification text; predicting an audio duration corresponding to the modified text; adjusting a to-be-edited area of the to-be-edited audio according to the audio duration corresponding to the modified text to obtain an adjusted to-be-edited audio; on the basis of the pre-trained audio editing model, the edited audio being obtained according to the adjusted to-be-edited audio and the modified text, the edited audio obtained through the audio editing model is natural in context listening feeling, and the function of synthesizing new words not appearing in a corpus is supported.

An apparatus and method for artificial reverberation having one or more input summing nodes receiving an input signal and which each feed a first series of delay elements and the output of which is thereafter summed, weighted, and fed back to the input summing nodes. Also, a feedback summing node which further feeds a second delay element which feeds an output with a signal which has multi-dimensional or multi-delay reverberation relative to the input signal. An alternative embodiment further feeds one or more of the first delay element outputs weighted via an output gain to an output summing node which also sums the output of the second delay element and provides a summed output having a multi-dimensional or multi-delay reverberation. The embodiment is easily and economically implemented via conventional integrated electronic circuits, a combination of analog and digital electronics, digital signal processors, microprocessors, micro-controllers, or computer algorithms.

The invention provides full-opening-pressure full-paper drum paper and a method for preparing the same. The method includes carrying out repulping, beating and bleaching and carrying out pulp mixing on fillers and chemical auxiliaries to obtain drum paper pulp; carrying out pulp fishing on the drum paper pulp; carrying out saturated steam treatment after pulp fishing is carried out; carrying out extruding dehydration. The full-opening-pressure full-paper drum paper and the method have the advantages that the surface quality of paper can be improved, and the tightness and the strength of the paper can be enhanced; vacuum drying is directly carried out at the low temperatures of 150-200 DEG C after pulp fishing forming is carried out, moisture in the paper can be removed, high-temperature and high-pressure treatment on the paper in drying procedures is omitted, fibers of the paper can be prevented from being damaged, accordingly, the strength and the flexibility of the obtained full-opening-pressure full-paper drum paper can be effectively improved, stereoscopic impression of human voice in intermediate frequencies can be enhanced, the voice is smooth and real, and the layering of low frequencies further can be enhanced; the generated voice is thick and solid and is free of noise or harshness, and tone is clear, natural and permeable.

The invention belongs to the field of sound boxes, in particular to a medium and high frequency sound box with multiple magnets, comprising a box body, a speaker comprising a magnet group, the magnet group comprising a main magnet and four sub-magnets, and the sub-magnets are placed around the main magnet, A water collecting plate is installed inside the box body. The water collecting plate includes a hydrophilic coating and a hydrophobic coating. A detection tube is connected to the bottom of the water collecting plate. The outlet of the side wall of the box body; by setting the water collecting plate, the hydrophilic coating and the hydrophobic coating make the water in the air in the box condense into water droplets and discharge, and extract and discharge the water in the air in the box, so as to achieve the The effect of dehumidification and drying, when the humidity is too high, the water collected in the detection tube is too much, so that the conductive sheet is in contact with the switch key, and the dehumidification component is activated. There is no need to install an additional electronic detection device, which reduces the use cost and saves the power consumption.