51 results about "Noise gate" patented technology

A communications headset having multiple modes of communication, including DECT7 wideband and narrow band, Bluetooth®, two-way radio connectivity, and USB connectivity. The system includes a DECT7 transceiver, a Bluetooth® transceiver, a microcontroller, and a digital signal processor (DSP), all connected on a bus. The DSP and a portion of the microcontroller can be reprogrammed via signals through the USB port or via signals from the Bluetooth® transceiver. The reprogramming signals originate from a computer that is temporarily linked to the headset via USB cable or Bluetooth®. The system provides listen-through capability, enabling face-to-face conversation while using DECT7 communications. The DECT7 communications have a noise gate that shuts off all noise when there is no voice signal present. The headset provides substantial hearing protection via passive and active noise cancellation and includes a sound pressure dosimeter.

Speech noise gating for gain control functions such as automatic gain control, dynamic range compression, and digital volume control scales the gain control function gain according to the ratio of noise energy to input energy.

The invention relates to an objective and fast determination method of the noise threshold of power spectrum density data, belonging to the field of wind profile radar signal and data processing. A wind profile radar extracts information of power spectrum density data, and a noise power threshold needs to be determined. In the prior art, the return signal power of a remote gate is used as the noise threshold. When the remote gate comprises non-negligible meteorologic signals, the error is great. The invention needs to solve the technical problem of objective and fast determination method of the noise threshold of power spectrum density data. A detection factor calculated by power spectrum density data and reflecting signal content is introduced according to the statistic characteristics of noise, and the noise threshold of each remote gate is determined through iterative calculations on the power spectrum data. A power density threshold is preset according to the maximum value and the minimum value of power spectrum density by a golden section method, the spectral lines with the amplitude higher than the power density threshold in the power spectra are cut until the detection factor shows that the residual spectra meet the noise characteristics, and thus, the noise threshold is determined.

Systems and methods for generating a haptic output from an audio signal having a continuous stream of sampled digital audio data are provided. A haptic processing system receives the digital audio data, analyses the digital audio data for processing and extracts haptic signals for generating a haptic effect through an actuator. The method includes passing the digital audio signal on through dynamic processor(s), adjusting the dynamic range of the digital audio signal, extracting the signal envelope of the audio data, synthesising low-frequency signals from the extracted signal envelope, and enhancing the low-frequency content using a resonator. The haptic output is generated by mixing the digital audio signal with outputs from the different modules of the haptic processing system. An analytics module monitors, controls and adjusts the processing of the digital audio signal at the noise gate module, the compressor module and the envelope module to enhance the haptic output.

An application for operating on a smart phone that records a musician's performance, either voice or instrumental, in combination with pre-recorded music. The combination allows for the auto tuning of the recording, the compression of the recording, the equalization of the recording, adding in reverb, correcting latency and the audio quantization of the rhythm, in addition to music enhancement features such as vocal spread, DeEsser, vocal doubler, vocal harmonizer, tape saturation, pitch correcdtion, flanger, phaser, auto pan, vibrato, tremolo, rotary, ring modulator, metalizer, expander, noise gate, wah, vocal leveling, tape stop, half speed, LoFi, and stutter. Once combined, the song is transmitted to social media and / or to an online store for sale. The user can also make a video with the song. Additional marketing such as song competitions or music reviews and ratings are also provided.

The invention provides a novel intelligent automatic audio mixing method mainly comprising the following steps: 1) receiving an audio signal from a microphone; amplifying the audio signal; comparing the amplified audio signal with the noise gate threshold level in a comparator 1, wherein only the signal higher than the noise gate threshold level can reach a comparator 2 and the method is characterized by separating all the hardware components in step 1) from the original intelligent automatic audio mixer and arranging the components as independent units; comparing the audio signal with an output signal from the comparator 2 of a previous microphone manager, and outputting to a microphone manager of the next level; carrying out such steps of transmission, comparison and changing one by one; and finally feeding the signal having a maximum value obtained through the comparison of N microphones; and 2) receiving the audio signal having the maximum value from the microphone manager; amplifying the audio signal by the amplifier; outputting the audio signal to an amplifying device; and sending a control signal to the microphone manager by a controller, wherein the hardware components in the step are arranged as independent units.

The invention provides a noise gate circuit system which comprises a head amplifier circuit for amplifying an electric signal and a signal processing circuit unit for processing the electric signal, wherein the signal processing circuit unit is provided with a full-wave rectification circuit unit, a filter circuit unit, a comparer circuit unit and a reference voltage generating circuit unit. The invention also provides a designing method based on the noise gate circuit system. Compared with relevant technologies, the noise gate circuit system and the designing method thereof have the advantages of low power consumption, low production cost, easiness in integration and high control accuracy.

This invention discloses a method and a device for eliminating background noises in eliminating phone input, in which, after receiving analog input phone signals, an A / D conversion module converts the signals into a digital phonetic signal sampling point sequence, an amplitude statistic module computes the energy value of each sampling point of the sampling block and calculates them to get a unified value, if said statistic value is lower than a designed noise threshold value, the noise eliminating module carries out noise attenuation to the sampling point sequence of the current block to be converted to analog phone signals and output by the A / D conversion module, otherwise, the noise eliminating module converts the original sampling point sequence to analog phone signals and output by the A / D conversion module.

Systems and methods for generating a haptic output from an audio signal having a continuous stream of sampled digital audio data are provided. A haptic processing system receives the digital audio data, analyses the digital audio data for processing and extracts haptic signals for generating a haptic effect through an actuator. The method includes passing the digital audio signal on through dynamic processor(s), adjusting the dynamic range of the digital audio signal, extracting the signal envelope of the audio data, synthesising low-frequency signals from the extracted signal envelope, and enhancing the low-frequency content using a resonator. The haptic output is generated by mixing the digital audio signal with outputs from the different modules of the haptic processing system. An analytics module monitors, controls and adjusts the processing of the digital audio signal at the noise gate module, the compressor module and the envelope module to enhance the haptic output.

Systems and methods for generating a haptic output from an audio signal having a continuous stream of sampled digital audio data are provided. A haptic processing system receives the digital audio data, analyses the digital audio data for processing and extracts haptic signals for generating a haptic effect through an actuator. The method includes passing the digital audio signal on through dynamic processor(s), adjusting the dynamic range of the digital audio signal, extracting the signal envelope of the audio data, synthesising low-frequency signals from the extracted signal envelope, and enhancing the low-frequency content using a resonator. The haptic output is generated by mixing the digital audio signal with outputs from the different modules of the haptic processing system. An analytics module monitors, controls and adjusts the processing of the digital audio signal at the noise gate module, the compressor module and the envelope module to enhance the haptic output.

The invention relates to a high intensity sound insulation door. The high intensity sound insulation door comprises upper and lower seal boards, side seal boards, movable inner and outer doors, inner and outer door upper and lower sealing pasters, inner and outer door sealing frames, inner and outer door sealing frame air valve openings, inner and outer door internal lock handles, inner and outer door side hook grooves, inner and outer door handles, a windpipe, a side board air bag, a two way pump machine, inner door upper and lower plugs, inner door upper and lower plug motion bars and a stand; according to the high intensity sound insulation door, a vacuum sound insulation technology, a gap seal technology and a wave absorbing noise reduction technology are adopted for noise reduction and sound insulation simultaneously, the sound insulation function can be greatly improved, and the effect of real sound insulation zero penetration is achieved. The structure design has vacuum confined space, so that essential attributes of the fire proof performance of the high intensity sound insulation door can be greatly improved. The antitheft function of the high intensity sound insulation door can be guaranteed through the arrangement of a door stopper and a door stopper connecting rod system. The high intensity sound insulation door has high intensity resistance and can be qualified to multiple working scenes.

The invention relates to a linear array audio power amplification device which comprises an audio transmission interface module, a DSP audio processing module, a control interface module and a power amplifier module. The DSP audio processing module is connected with the audio transmission interface module, the control interface module and the power amplifier module. The DSP audio processing moduleis an 8-input 16-output DSP audio processing module; the DSP audio processing module comprises eight transmission links; each transmission link comprises an audio signal source selector , a noise gate, an input gain, an input delay, an input phase, an input high and low frequency lifter, an input nine-segment parameter equalizer, an input RMS amplitude limiter, an input mute switch, a channel router, an output gain, an output delay, an output phase, an output RMS amplitude limiter, an output limiter, an output eight-segment parameter equalizer, an output high and low pass filter, an output FIR filter and an output mute switch which are connected in series.. The high and low pass arranged in the eight transmission links are connected with one another. A purpose of integrating multiple functions is achieved.

The invention provides a noise removal device and method capable of more proper interpolation on an input signal. The noise removal device is for removing noise in an input signal and includes: a noise detector detecting noise in an IF signal and outputting a noise detection signal; an interpolation controller determining a period and amount of interpolation for noise correction processing, based on the IF signal and the noise detection signal; and a noise gate processor performing the noise correction processing on the IF signal, based on the interpolation period and amount supplied from the interpolation controller. The interpolation controller sets a predetermined first interpolation period, based on a first noise detection signal inputted from the noise detector, and redefines a second interpolation period longer than the first interpolation period when a second noise detection signal is detected within the first interpolation period.

The invention relates to the communication technology field, particularly relates to an SRS channel quality measurement method and a device and aims to solve a technical problem that a channel quality SNR value can not be accurately acquired in the prior art. The SRS channel quality measurement method comprises steps that according to present signal to noise ratios of terminals in a time domain channel power spectrum, an average signal to noise ratio is determined, a present signal to noise ratio of one terminal is determined according to the present noise threshold; according a corresponding relationship between the noise threshold and the average signal to noise ratio, a target noise threshold corresponding to the average signal to noise ratio is determined; according to the target noise threshold, a precise signal to noise ratio of each terminal is determined. Through the method, through dynamically adjusting the noise threshold, the precise signal to noise ratio of each terminal is re-determined according to the noise threshold after adjustment, and thereby the precise signal to noise ratio of each terminal can be accurately determined.

Provided is a multichannel configurable pulse generating method. The method comprises the steps of (1) dividing N pulse generating channels into mutual independent M sets, and enabling only one pulse output channel to be available for each set through a multichannel noise gate, wherein each set comprises P pulse generating channels,; (2) carrying out priority ranking on the P pulse generating channels contained in each of the M sets according to the control objects corresponding to the P pulse generating channels contained in the set; (3) setting the pulse widths and the pulse phases needed by the P pulse generating channels of each set respectively, wherein the pulse widths are detail numerical values, and the pulse phases are the phase difference values among the channels; (4) generating and outputting pulse signals with the width and phase needed by the channel with the highest priority firstly for each set, and then generating and outputting pulse signals with the width and phase needed by the channel with the second highest priority and so on until all the pulses of the P pulse generating channels of the set are output according to priority relationship in sequence.

Systems and methods for generating a haptic output from an audio signal having a continuous stream of sampled digital audio data are provided. A haptic processing system receives the digital audio data, analyses the digital audio data for processing and extracts haptic signals for generating a haptic effect through an actuator. The method includes passing the digital audio signal on through dynamic processor(s), adjusting the dynamic range of the digital audio signal, extracting the signal envelope of the audio data, synthesising low-frequency signals from the extracted signal envelope, and enhancing the low-frequency content using a resonator. The haptic output is generated by mixing the digital audio signal with outputs from the different modules of the haptic processing system. An analytics module monitors, controls and adjusts the processing of the digital audio signal at the noise gate module, the compressor module and the envelope module to enhance the haptic output.

An apparatus includes a first signal circuit path, a noise gate circuit, and a control circuit. The first signal circuit path processes a first electrical signal comprising one or more signal frequencies in the audio frequency band. The first signal circuit path includes a first amplifier circuit configured to provide a first output signal to a speaker load. A noise threshold circuit monitors the first electrical signal and generates a first indication when the magnitude of the first electrical signal falls below a first prescribed threshold voltage value. The output of the first signal path is attenuated according to the generated indication. The devices are formed on a single integrated circuit.

The invention discloses a fast noise cancellation filtering method. The method is particularly suitable for filtering received signals in the high-speed intersection process of two targets, such as the intersection process of a missile and the targets. The method comprises the following steps: S1, selecting a noise gate and an echo gate; S2, sampling signals (noise) in the noise gate and the echo gate; S3, carrying out noise summation and averaging; S4, performing phase inversion on the noise; and S5, carrying out additive operation. According to the fast noise cancellation filtering method provided by the invention, only a video switch and simple noise cancellation are used, so that the problem of complex operation in the previous noise cancellation process can be solved, the complexity of general signal processing operation is reduced and the filtering rapidity is improved under the condition that the filtering precision requirement is met; and the filtering speed and the requirement on the performance of the signal processing module can be greatly improved.

A multi-effect processing device for wireless microphone is disclosed to include a radio frequency-to-audio frequency converter module for receiving a radio frequency signal and processing the signal into an audio frequency signal, a DSP (Digital Signal Processor) for processing the audio frequency signal from the radio frequency-to-audio frequency converter module through the processes including at least one function selected from the group consisting of Echo, Reverb, Equalization, Compressor, Limiter, Expander, Feedback controller, and Noise Gate, and an output circuit electrically connected to the DSP for output the processed audio frequency signal from the DSP to external audio output apparatus.

A communications headset having multiple modes of communication, including DECT7 wideband and narrow band, Bluetooth®, two-way radio connectivity, and USB connectivity. The system includes a DECT7 transceiver, a Bluetooth® transceiver, a microcontroller, and a digital signal processor (DSP), all connected on a bus. The DSP and a portion of the microcontroller can be reprogrammed via signals through the USB port or via signals from the Bluetooth® transceiver. The reprogramming signals originate from a computer that is temporarily linked to the headset via USB cable or Bluetooth®. The system provides listen-through capability, enabling face-to-face conversation while using DECT7 communications. The DECT7 communications have a noise gate that shuts off all noise when there is no voice signal present. The headset provides substantial hearing protection via passive and active noise cancellation and includes a sound pressure dosimeter.

The invention provides a noise removal device and method capable of more proper interpolation on an input signal. The noise removal device is for removing noise in an input signal and includes: a noise detector detecting noise in an IF signal and outputting a noise detection signal; an interpolation controller determining a period and amount of interpolation for noise correction processing, based on the IF signal and the noise detection signal; and a noise gate processor performing the noise correction processing on the IF signal, based on the interpolation period and amount supplied from the interpolation controller. The interpolation controller sets a predetermined first interpolation period, based on a first noise detection signal inputted from the noise detector, and redefines a second interpolation period longer than the first interpolation period when a second noise detection signal is detected within the first interpolation period.

Systems and methods for generating a haptic output from an audio signal having a continuous stream of sampled digital audio data are provided. A haptic processing system receives the digital audio data, analyses the digital audio data for processing and extracts haptic signals for generating a haptic effect through an actuator. The method includes passing the digital audio signal on through dynamic processor(s), adjusting the dynamic range of the digital audio signal, extracting the signal envelope of the audio data, synthesising low-frequency signals from the extracted signal envelope, and enhancing the low-frequency content using a resonator. The haptic output is generated by mixing the digital audio signal with outputs from the different modules of the haptic processing system. An analytics module monitors, controls and adjusts the processing of the digital audio signal at the noise gate module, the compressor module and the envelope module to enhance the haptic output.

The invention discloses a continuous phase QPSK (quadrature phase shift keying) modulation device. The continuous phase QPSK modulation device comprises a data change detector, a frequency selector, a carrier phase control word generator, an additional accumulated phase control word generator, a noise gate, a phase control word calculator, a phase control word accumulator and an ROM (read only memory) lookup table. The continuous phase QPSK modulation device is simple in structure and easy to implement. The invention further discloses a continuous phase QPSK modulation method. In the continuous phase QPSK modulation method, continuity of modulation waveforms is realized by smoothly transiting continuous transitional waveforms of a data waveform phase to the modulation waveforms of the current data, phase jump existing in the modulation waveforms of transmitted data before and after adjacent clocks is eliminated, and accordingly, pulse response caused by jumping phases is eliminated, symbol rate information contained in waveform signals is hidden, and communication safety and confidentiality are improved.

Provided is a multichannel configurable pulse generating method. The method comprises the steps of (1) dividing N pulse generating channels into mutual independent M sets, and enabling only one pulse output channel to be available for each set through a multichannel noise gate, wherein each set comprises P pulse generating channels,; (2) carrying out priority ranking on the P pulse generating channels contained in each of the M sets according to the control objects corresponding to the P pulse generating channels contained in the set; (3) setting the pulse widths and the pulse phases needed by the P pulse generating channels of each set respectively, wherein the pulse widths are detail numerical values, and the pulse phases are the phase difference values among the channels; (4) generating and outputting pulse signals with the width and phase needed by the channel with the highest priority firstly for each set, and then generating and outputting pulse signals with the width and phase needed by the channel with the second highest priority and so on until all the pulses of the P pulse generating channels of the set are output according to priority relationship in sequence.

The invention provides a digital detector, and the detector comprises a modulo operation module which is used for obtaining a digital audio signal and carrying out the modulo operation, and obtaining a value after the modulo operation; the delayer is used for delaying an envelope signal of one period of a current amplitude envelope value, and transmitting a first value obtained by first operation of the modular operation module to the first comparator; the first comparator is used for receiving the first value and a second value obtained by second operation of the modulo operation module, and comparing the first value with the second value; the second comparator is used for receiving the first value and a noise threshold value and comparing the first value with the noise threshold value; the third comparator is used for receiving a product of the first value and a time parameter and a noise threshold value, and comparing the product of the first value and the time parameter and the noise threshold value; according to the invention, rapid detection and noise threshold setting can be realized to prevent noise signal output, so that the efficiency and the broadcasting effect are improved.

The invention provides a noise gate and on-off mute combined circuit. The circuit comprises an on-off mute circuit and a noise gate circuit. The noise gate circuit comprises a level amplifying and phase-inverting circuit module, a full-wave rectifying and retaining circuit module and a voltage amplifying and current amplifying circuit module. The output end of the level amplifying and phase-inverting circuit module is connected with the input end of the full-wave rectifying and retaining circuit module. The output end of the full-wave rectifying and retaining circuit module is connected with the input end of the voltage amplifying and current amplifying circuit module. The output end of the voltage amplifying and current amplifying circuit module is connected with the input end of a mute execution circuit module. The on-off mute circuit is connected with the input end of the mute execution circuit module. A signal input end is connected with the input end of the noise gate circuit. The output end of the mute execution circuit module is connected with a signal output end. A noise gate function and an on-off mute function are achieved. At the same time, the material cost is lowered, and the circuit is simple and reliable.

The present disclosure relates to processing a plurality of audio signals. The method includes receiving the plurality of audio signals in the frequency domain and determining an overall attenuation multiplier based on the plurality of audio signals and an overall lookup table that relates decibel values to different overall attenuation multipliers. The method further includes determining an attenuation vector comprising a plurality of bin-specific attenuation multipliers, each bin-specific attenuation multiplier respectively corresponding to a different frequency bin of the plurality of frequency bins. The method further includes scaling each bin-specific attenuation value in the attenuation vector with the overall attenuation multiplier, and editing each of the audio signals based on the scaled bin-specific attenuation values in the attenuation vector.

An electronic musical instrument includes a condition determiner that determines whether an OFF condition for turning off a power supply is satisfied in an automatic power-OFF mode; a noise gate that is opened when a level of an input audio signal exceeds a threshold value and is closed when the level of the input audio signal continues being equal to or lower than the threshold value for a first predetermined period of time; and a controller that turns off the power supply on the condition that the condition determiner determines that the OFF condition is satisfied in the automatic power-OFF mode; and the controller does not turn off the power supply when the noise gate is in an open state, even in the case where the OFF condition is satisfied.

Systems and methods for generating a haptic output from an audio signal having a continuous stream of sampled digital audio data are provided. A haptic processing system receives the digital audio data, analyses the digital audio data for processing and extracts haptic signals for generating a haptic effect through an actuator. The method includes passing the digital audio signal on through one ormore dynamic processors, adjusting the dynamic range of the digital audio signal, extracting the signal envelope of the audio data, synthesising low-frequency signals from the extracted signal envelope, and enhancing the low-frequency content using a resonator. The haptic output is generated by mixing the digital audio signal with outputs from the different modules of the haptic processing system. An analytics module monitors, controls and adjusts the processing of the digital audio signal at the noise gate module, the compressor module and the envelope module to enhance the haptic output. The processed digital signal passes on through a low pass filter, a limiter, and a bell filter to remove unwanted frequencies, gain, and extend the frequency response respectively. The output signal isprovided to a Digital-to-Analog (D / A) converter and finally fed to the actuator for producing haptic output. A detection module receives a first input from the output of the bell filter and the secondinput from the input audio signal, probes the signals at the first and the second inputs, and in the absence of the audio signal at both the inputs disables the haptic processing system and enters power saving mode.

The invention provides a channel estimation method based on a double-domain weighting-noise threshold, which comprises the following steps of: 1, time-frequency domain transformation: after receiving signals of a receiving end are subjected to time-frequency synchronization processing, extracting a pilot frequency sequence pilot, carrying out N-point FFT (Fast Fourier Transform) on the receiving signals, and converting the receiving signals to a frequency domain to obtain PILOT; performing N-point FFT (Fast Fourier Transform) on the time domain local pilot frequency sequence pilot to generate a frequency domain local pilot frequency PILOT; 2, calculating a frequency domain weighting coefficient: calculating the frequency domain weighting coefficient Coef according to the local pilot frequency PILOT and the current linear signal-to-noise ratio sn; step 3, channel estimation calculation: carrying out signal-to-noise ratio self-adaptive adjustment on the received signal of each frequency point through the operation; 4, inverse discrete Fourier transform: performing inverse Fourier transform on the channel estimation H after frequency domain weighting, and converting a frequency domain signal into a time domain signal to obtain h; step 5, extracting useful information: calculating and determining an optimal symbol length parameter L according to the maximum time delay extension of the system, performing optimization truncation on time domain data, retaining original values of the first L sampling points, endowing a zero value to subsequent sampling data exceeding the L point, and finally obtaining an optimized time domain result hL; 6, threshold judgment: within the range of the effective symbol length L, calculating a self-adaptive noise judgment threshold, implementing intelligent noise filtering processing on the truncated L-point data by using the threshold, eliminating a noise component through the threshold, and finally outputting a purified result hLR; and 7, zero padding: setting the length of the data block needing to be balanced as M, and setting the point number of channel estimation as N. When Mgt; when M is larger than N, time domain zero padding needs to be carried out on the hLR, the number of zero padding is M-N, and hLRZ is obtained; and 8, DFT: carrying out Fourier transform on the hLRZ to obtain a final complete channel estimation HLRZ.