摘要:
The disclosure provides a method for noise generation, including: determining an initial value of a reconstructed parameter; determining a random value range based on the initial value of the reconstructed parameter; taking a value in the random value range randomly as a reconstructed noise parameter; and generating noise by using the reconstructed noise parameter. The disclosure also provides an apparatus for noise generation.
摘要:
The disclosure provides a method for noise generation, including: determining an initial value of a reconstructed parameter; determining a random value range based on the initial value of the reconstructed parameter; taking a value in the random value range randomly as a reconstructed noise parameter; and generating noise by using the reconstructed noise parameter. The disclosure also provides an apparatus for noise generation.
摘要:
A DTX decision method includes: obtaining sub-band signal(s) according to an input signal; obtaining a variation of characteristic information of each of the sub-band signals; and performing DTX decision according to the variation of the characteristic information of each of the sub-band signals. With the invention, a complete and appreciate DTX decision result is obtained by making full use of the noise characteristic in the speech encoding/decoding bandwidth and using band-splitting and layered processing. As a result, the SID encoding/CNG decoding may closely follow the characteristic variation of the actual noise.
摘要:
A DTX decision method includes: obtaining sub-band signal(s) according to an input signal; obtaining a variation of characteristic information of each of the sub-band signals; and performing DTX decision according to the variation of the characteristic information of each of the sub-band signals. With the invention, a complete and appreciate DTX decision result is obtained by making full use of the noise characteristic in the speech encoding/decoding bandwidth and using band-splitting and layered processing. As a result, the SID encoding/CNG decoding may closely follow the characteristic variation of the actual noise.
摘要:
A multi-purpose Bluetooth interface and controller includes a microcontrol unit and at least one first microphone, the first microphone being electrically connected to the MCU and configured to collect sound signals and convert the sound signals into electrical signals that are received by the MCU; wherein the Bluetooth interface and controller further includes at least one connection port which is electrically connected to the MCU and is configured to connect an external device that includes a wired microphone, the wired microphone also being configured to collect sound signals that are received by the MCU; and the MCU encodes electrical sound signals received from the first microphone and the external wired microphone, and transmits the encoded sound signals in uplink to a mobile terminal via a Bluetooth wireless connection established between the MCU and the mobile terminal for subsequent processing by the mobile terminal.
摘要:
A method for operating a binaural hearing system including first and second hearing devices, each including an input transducer, a signal processing unit, an output transducer and a link unit for exchanging information between the devices. Operating the first hearing device according to a first processing scheme, operating the second hearing device according to a second processing scheme, monitoring an acoustic situation by the hearing devices, generating a request for coordinating the two hearing devices if one hearing device detects an acoustic situation asking for coordinating the two processing schemes of the hearing devices, the hearing device detecting such an acoustic situation being an ipsi-lateral hearing device the other being a contra-lateral hearing device, activating a link between the devices for transmitting the request to the contra-lateral hearing device, and changing the processing scheme in at least one of the devices in accordance with the request.
摘要:
The present invention discloses a signal processing method and a data processing method and apparatus. A time-domain to frequency-domain signal processing method includes: pre-processing time-domain data; pre-rotating the pre-processed data by using a rotation factor a·WNn+0.5; performing a discrete Fourier transform (DFT) of N/4 points on the pre-rotated data; and post-rotating the data transformed by the DFT by using a rotation factor b·WNk+0.5 to obtain frequency-domain data. A frequency-domain to time-domain signal processing method includes: twiddling frequency-domain data; pre-rotating the twiddled data by using a rotation factor c·WNk+0.5; performing a DFT of N/4 points on the pre-rotated data; and post-rotating the data transformed by the DFT by using a rotation factor d·WNn+0.5; and post-processing the post-rotated data to obtain time-domain data. The present invention increases the efficiency of signal processing.
摘要:
This invention relates to a porous metallic honeycomb substrate for automotive exhaust gas cleaning catalysts. It is mainly a column substrate formed by sintering metal grains, with many connected fine pores between the metal grains. And there are also many through holes between the two end faces of the column. Because the sintered metal grains have constructed a rough surface, the noble metal catalysts can be coated firmly on the said porous metal honeycomb substrate and is not easy to be blown off by the vent gas. In addition, because there are many fine pores between the metal grains, the gas can contact with the catalysts effectively, and so the conversion efficiency can be improved greatly.
摘要:
A method for operating a binaural hearing system including first and second hearing devices, each including an input transducer, a signal processing unit, an output transducer and a link unit for exchanging information between the devices. Operating the first hearing device according to a first processing scheme, operating the second hearing device according to a second processing scheme, monitoring an acoustic situation by the hearing devices, generating a request for coordinating the two hearing devices if one hearing device detects an acoustic situation asking for coordinating the two processing schemes of the hearing devices, the hearing device detecting such an acoustic situation being an ipsi-lateral hearing device the other being a contra-lateral hearing device, activating a link between the devices for transmitting the request to the contra-lateral hearing device, and changing the processing scheme in at least one of the devices in accordance with the request.
摘要:
A method and a device for clipping control are provided in the present invention. The method includes: updating a clipping factor according to a maximum absolute value FrameLev in a current frame signal; obtaining a clipping restoration filter according to the clipping factor; filtering the current frame signal according to the clipping restoration filter to obtain a filtered clipping restoration signal. With the method and device for clipping control provided in the present invention, whether a clipping phenomenon occurs may be automatically detected, and clipping restoration is performed, so that subjective quality of an output signal is improved.