摘要:
An automatic defect detection method for detecting a defect in an object comprises: obtaining ultrasound scan data of the object, dividing echo amplitude values of the data into a plurality of sub-sets; assessing each sub-set to determine whether any echo amplitude values resulted from a structure of interest; computing for each sub-set, using at least a representative position of the structure portion of the sub-set and of a neighboring sub-set, a preselected mathematical function which is directly or inversely proportional to a distance between the representative positions; identifying sub-sets having a computed value that does not meet a predetermined criterion as regions of the ultrasound scan data that require inspection; issuing a notification indicating whether or not a region requiring inspection has been found; and if a region requiring inspection been found, storing data identifying the region in a database.
摘要:
A system determines to use at least two independent renderers to render at least two output streams that are to be synchronized. The independent renderers are provided with a shared synchronization object when instructed to render the respective output stream. A time when all of the independent renderers can render a respective first buffer of the respective output stream is determined from the shared synchronization object. Rendering of the output streams utilizing the independent renderers is begun at the determined time. In this way, rendering of the output streams may be synchronized.
摘要:
A stringed instrument includes a body, a string, a string exciting device and a bridge. The body supports the string, the string exciting device and the bridge. The string has a scale length determined by a distance between a first support point and a second support point. The string exciting device is designed to be driven by an electrical signal having a certain frequency and vibrate the string by applying an excitation signal having a frequency corresponding to the frequency of the electrical signal. The bridge has the first support point and a surface located between the first support point and the second support point and designed to come into contact with the string during vibration of the string.
摘要:
The subject matter described herein includes methods, systems, and computer readable media for synthesizing sounds using estimated material parameters. According to one aspect, a method for sound synthesis using estimated material parameters is provided. The method includes at a computing platform including a memory and a processor, estimating, by the processor and based on a recorded audio sample of an impact on a physical object, one or more material parameters of a physical object for use in synthesizing a sound associated with a virtual object having material properties similar to the physical object. The method further includes storing the one or more material parameters in memory. The method further includes using the estimated material parameters to generate a synthesize sound for the virtual object.
摘要:
A system for timbral change, capable of changing timbres included in an existing music audio signal to arbitrary timbres. Replaced harmonic peak parameters are created by replacing a plurality of harmonic peaks included in harmonic peak parameters, which are stored in a separated audio signal analyzing and storing section 3 and indicate relative amplitudes of n-th order harmonic components of each tone generated by a musical instrument of a first kind, with harmonic peaks included in harmonic peak parameters, which are stored in a replacement parameter storing section 6 and indicate relative amplitudes of n-th order harmonic components of each tone generated by a musical instrument of a second kind and corresponding to each tone generated by the musical instrument of the first kind. A synthesized separated audio signal generating section 7 generates a synthesized separated audio signal for each tone using parameters other than the harmonic peak parameters and the replaced harmonic peak parameters.
摘要:
A circuit, method, and system for producing artificial ambience effect for an input audio signal, mono, stereo, or surround. The ambience effect enhances artificial reverberation, replaces artificial reverberation, or synthesizes extra audio channels, such as surround channels. The circuit may include a transient reduction module and a reverberation filter. The transient reduction module may be adapted to reduce transients in an input audio signal of one or more channels. The reverberation filter maybe adapted to receive a transient-reduced signal of one or more channels corresponding to the transient-reduced signal.
摘要:
The audio process is a signal path having a plurality of filters connected or including distortion means. The prime example of this phenomenon surrounds inductances such as found in magnetic tape recorders, spring reverberators, and transformers. The inductors require a pre-emphasis filter to produce a constant current. Secondarily there are the complementary filters associated with the average spectrum of audio which are used to maximize the signal to noise ratio. Ideally the net response of the filters is flat, however, roll-offs at the audio extremes are quite common. The audio process distortion emulates the distortion of the active devices between the filters such as vacuum tube and magnet non-linearities. Since the distortion devices follow filters, the spectra of distortion is different than the frequency response.
摘要:
An electric guitar amplifier which utilizes a digital signal processor to produce vacuum-tube-like distortion without certain unwanted audio artifacts created by previous digital realizations of nonlinear, high-gain functions. By virtue of a microprocessor-controlled digital signal processor embodiment, the invention gives the user programmable control over parameters normally associated with state of the art guitar amplifiers (e.g. tone controls, reverb controls, tremolo controls, etc.), as well as other musically useful parameters which are not normally included among the controls of a guitar amplifier (e.g. selection of preamp type, autovolume, reverberation type, autowah, etc.).
摘要:
To present a holonic rhythm generator capable of generating rhythm following free changes by transmitting the intent of tempo change from the action of man to rhythm generator in real time, or, to the contrary, guiding the action rhythm of man gradually by the rhythm generator. To achieve the object, the device has a rhythm generator having such constitution described by a nonlinear vibration equation which is a van der Pol's formula a constant portion of which is replaced by a cubic expression, and a fixed rhythm generator and action rhythm detector for generating an input signal of the rhythm generator, in which a specific relation is given between the fixed rhythm generator and action rhythm detector.
摘要翻译:通过将节奏变化的意图从人的动作实时传递到节奏发生器,呈现出能够通过自由变化产生节奏的全能节奏发生器,或者相反,由节奏发生器逐渐引导人的动作节奏。 为了实现该目的,该装置具有节奏发生器,其具有由非线性振动方程描述的结构,该非线性振动方程是van der Pol的公式,其恒定部分被立方体表示所代替,并且具有固定节律发生器和动作节律检测器,用于产生 节奏发生器的输入信号,其中在固定节奏发生器和动作节奏检测器之间给出特定关系。
摘要:
This invention is an emulation of vacuum tube guitar amplifier with devices that emulate vacuum tube plate voltage and current characteristics. This amplifier system has a switching system for selecting preamplifiers and which alters the behavior of the output stage by changing features such as feedback and compression character. The preamplifier and output stages use non-linear means for the emulation of triode amplifiers, cathode followers, phase splitters, and pentode amplifiers. The features emulated are the grid conduction with scaling and offsetting, current gain, plate voltage and current characteristics, and compression.