156results about "Recording signal processing" patented technology

The present application discloses an analog-to-digital conversion circuit, a chip, and a recording device. The analog-to-digital conversion circuit comprises a main path module, a dynamic range enhancement module, and a dynamic digital-to-analog conversion module. The main path module is used for converting an analog signal and an analog feedback signal into a digital signal to be processed for outputting to the dynamic range enhancement module, and obtaining a digital signal on the basis of the digital signal to be processed and a digital gain signal and outputting the digital signal. The dynamic range enhancement module is used for performing dynamic quantization processing on the digital signal to be processed to obtain a control signal, and generating the digital gain signal. The dynamic digital-to-analog conversion module is used for, on the basis of the control signal, dynamically controlling the activation and deactivation of each DAC element in a digital-to-analog conversion array, and generating an analog feedback signal. According to the analog-to-digital conversion circuit of the present application, the need for a front-end fixed-gain OPA is eliminated, reducing power consumption and reducing costs; moreover, dynamically controlling the activation and deactivation of each DAC element in the digital-to-analog conversion array further reduces the power consumption.

A voice activity detection method includes a voice pickup module, a processing module coupled to the voice pickup module and a prompt module coupled to the processing module. The processing module is used to perform a voice activity detection method, including: receiving voice information by the voice pickup module; acquiring a volume value of the voice information by the processing module; determining by the processing module whether the volume value is less than or equal to a first volume threshold; when it is determined that the volume value is less than or equal to the first volume threshold, generating by the prompt module a first prompt message for increasing the volume value; and when it is determined that the volume value is more than the first volume threshold, generating by the prompt module a second prompt message that indicates a volume value standard has been satisfied.

The present disclosure relates to a computer-implemented system and method for providing streams and playbacks of video and audio recordings in respect of artist performances before live audiences. In particular, the disclosure relates to a system and method of providing a stream or playback of video and audio recordings captured in respect of an artist's live performance to users located around the world in exchange for a fee, with particular limitations placed upon access to the recording until the fee is paid.

Described are systems, devices and methods for staggered bits magnetic recording. A staggered bits track pattern is recorded on granular magnetic recording media, thereby mapping a data bit sequence onto adjacent tracks so that the bits in one track are staggered relative to the bits in the adjacent track. A read head having an effective cross-track width extending across the tracks is aligned to read a sequence of combined bit signals as the read head is advanced in the down-track direction. Each combined bit signal combines one bit from each adjacent track. A data channel coupled to the read head is used to disambiguate the sequence of combined bit signals, thereby reproducing the data bit sequence.

The utility model discloses an SSD (Solid State Disk) automatic copying machine, which is applied to the technical field of automatic copying machines, and is characterized by comprising a base and a mounting frame fixedly connected to the base, a plurality of stock bin assemblies used for storing SSD trays and positioning carriers used for positioning and storing SSDs are fixedly connected to the base side by side, and a positioning and taking assembly used for conveying the SSD trays or the SSDs is movably connected to the mounting frame based on a lead screw sliding and lifting assembly. The base is further fixedly connected with a copying machine and a card inserting assembly used for clamping the SSD in the positioning carrier and inserting the SSD into the copying machine for automatic copying, and the base is fixedly connected with a caching assembly used for storing the finished SSD. The SSD copying device has the technical effects that the structure is simple, and automatic copying of the SSD is realized.

The present invention provides a method for processing music audio data, comprising the steps of providing input audio data representing a first piece of music containing a mixture of predetermined musical timbres, decomposing the input audio data to generate at least a first audio track representing a first musical timbre selected from the predetermined musical timbres, and a second audio track representing a second musical timbre selected from the predetermined musical timbres, applying a predetermined first audio effect to the first audio track, applying no audio effect or a predetermined second audio effect, which is different from the first audio effect, to the second audio track, and obtaining recombined audio data by recombining the first audio track with the second audio track.

A method for distributing an audio instruction from a manager site at a client site in a distributed audio system having a plurality of client sites, a generalized audio instruction for playback of audio at the client sites is received via user input at the manager site. The generalized audio instruction includes a plurality of labels which are global in the audio system and are indicative of a time schedule category, an audio zone category, and an audio source category. Pre-defined information which associates the plurality of labels indicative of the time schedule, audio zone, and audio source categories with client site specific identifiers of a time schedule, an audio zone, and an audio source, respectively, is accessed for each of client sites. The generalized audio instruction is adapted using the pre-defined information to generate a specialized audio instruction for each of the one or more client sites.

A memory management method for continuously recording digital content and a circuit system operating the method are provided. The circuit system includes a control circuit, a memory, and a storage device. The memory has a buffer that is defined as a pre-buffer or a main buffer based on a current recording mode. In the method, the circuit system loads continuously-received data and sequentially saves the data in the buffer that is defined as the pre-buffer in a first-in-first-out manner before a start-record instruction is received. After the start-record instruction is received, the data buffered in the pre-buffer is combined with the data that is continuously recorded to the main buffer. This file is then written to the storage device until a stop-record instruction is received.

According to one embodiment, a magnetic disk device including a controller. The controller writes adjustment patterns, reads the written adjustment patterns, and detects the number of signal components of the sync mark included in the read signal, selects a frequency of an adjustment pattern from which the detected number larger than or equal to a threshold value is obtained, among the read adjustment patterns, as a write frequency of each of magnetic heads, writes spiral patterns including the sync mark in each predetermined cycle with the same frequency as each of the selected write frequencies, and writes a servo pattern, while tracking each of the written spiral patterns.

This invention discloses a method and system for detecting low signal-to-noise ratio periodic linear frequency modulated (LFM) continuous wave signals, relating to the fields of radio target monitoring and spectrum management. The method includes: detecting periodic components in the data to be detected; if periodic components exist, recording period estimates based on these components; determining two adjacent observation windows based on the difference between the period estimates and the delay, and the delay itself; dividing the data to be detected into P consecutive groups of data using the period estimates; using a sampling point as the starting position of a step-size sliding observation window, performing piecewise discrete polynomial transformation and spectrum calculation on the data to be detected corresponding to each step-size sliding observation window, thereby detecting the periodic LFM continuous wave signal; when the detection result indicates the presence of a periodic LFM continuous wave signal, determining the modulation slope and modulation inflection point position of the signal. This invention effectively improves the detection capability for weak periodic LFM continuous wave signals.

Data is written in tracks in a first sub-region of a region of a disk using Shingled Magnetic Recording (SMR). It is determined whether a predetermined data storage capacity for the region can be reached by adding a sub-region guard band and shingle writing throughout a remaining portion of the region using a lower limit of track overlap. The sub-region guard band does not store data and separates the first sub-region from a second sub-region in the region. In response to determining that the predetermined data storage capacity for the region can be reached by adding the sub-region guard band and shingle writing with the lower limit of track overlap throughout the remaining portion of the region, the sub-region guard band is added, and the second sub-region is shingle written with at least as much track overlap as the lower limit of track overlap.

Provided is a disk device, a control method for a disk device, and a program, which enable a rotational latency to be minimized to access a next logical block address (LBA) regardless of which head is used for access in a disk device having a plurality of heads. The disk device of an embodiment includes a storage unit that stores a table in which a track skew value for each head is stored, and a control unit that reads out a track skew value corresponding to a head that is an object of operation from the table and performs track control.

A digital display device (Disp3a, Disp3b) comprising: - a digital screen (Ecr); - a first receiver (Rec1) able to receive a first piece of content via a first communication channel; - a second receiver (Rec2) able to receive a message via a second communication channel; - a first player (Lec1) able to play, on the digital screen, the first piece of content received via the first communication channel; a switch (Comm) configured to deactivate playing of the first piece of content by the first player, upon receipt of the message by the second receiver.

The present disclosure relates to a self-encrypting drive (SED). The self-encrypting drive (SED) receives a media encryption key (MEK) from a key management server. The MEK is stored only in a volatile memory of the SED. Data is encrypted based on the MEK for storage in a non-volatile storage medium of the SED. Further, the MEK is erased in the volatile memory to cryptographically wipe the SED by deleting all instances of the MEK stored by the SED.

Example channel circuits, data storage devices, and methods for using a trained neural network to estimate the noise mixture in a read signal are described. Samples are determined from a digital read signal, such as the read signal from the non-volatile storage medium of a data storage device. The samples are processed through one or more instances of a neural network comprised of trained coefficients and outputting a set of estimate values for a noise mixture of the read signal. The set of estimate values may then be used to adjust parameters of the read channel for processing the read signal to detect and decode data.

To provide a method and a system that distribute audio instructions from an administrator site at a client site.SOLUTION: A method is so adapted that predetermined information for associating a plurality of labels with client site-specific identifiers of respective time schedules, audio zones and audio sources is accessed for one or each of a plurality of client sites, and a generalized audio instruction generates an audio instruction specialized for the one or each of the plurality of client sites by using the predetermined information, and the audio instruction specialized for the client site includes a client site-specific identifier associated with a plurality of labels in the generalized audio instruction. As final means for distributing audio instructions at the one or each of the plurality of client sites, the specialized audio instruction generated for the client site is executed.SELECTED DRAWING: Figure 3

To provide a digital mixer capable of displaying / operating / changing a plurality of channels and a plurality of parameters at the same time.SOLUTION: A digital mixer 10 comprises: an input interface 12; a processor 14; an output interface 18; at least a first display 20 and a second display 21; and an operator 22. The operator 22 contains a mode switching button for switching between a first mode and a second mode. The processor 14 displays parameter setting screens of audio signals in different channels on the first display 20 and the second display 21 respectively when the mode switching button is set to the first mode, and displays parameter setting screens of the different audio signals in the same channel on the first display 20 and the second display 21 when the mode switching button is set to the second mode.SELECTED DRAWING: Figure 1

The present invention relates to a computer-implemented method for automatically annotating sensor data frames, such as video or audio frames. Received frames are grouped into packets based on at least one condition attribute related to ambient conditions present at the time the frames were recorded. A neural network is used to annotate a first packet corresponding to a particular value range of the condition attribute. Based on a first sample frame, a computer determines a quality measure for the annotations. If the quality measure for at least one frame is below a predetermined threshold, the neural network is retrained based on revised annotations for the first sample. If the quality measure is above a predetermined threshold, the annotated frames are exported. Furthermore, the present invention relates to a non-volatile computer-readable medium and a computer system.

A magnetic disk device and a read / write processing method capable of increasing track density are provided. The magnetic disk device and the read / write processing method according to this embodiment include: a disk; a head for writing data to and reading data from the disk; and a controller for writing to a second track overlapping with a first track in a radial direction of the disk; performing a first replacement process of recording a first user sector usable by a user in a first area when a first user sector cannot be written in the first track; and performing a second replacement process, different from the first replacement process, of recording the first parity sector in a second area when a first parity sector obtained by performing an XOR operation cannot be written in the first track.

A method performed by a portable media player device. The method receives a microphone signal that includes audio content output by an audio playback device via a loudspeaker. The method determines identification information regarding the audio content, wherein the identification information is determined through an acoustic signal analysis of the microphone signal. In response to determining that the audio playback device has ceased outputting the audio content, the method retrieves from local memory of the portable media player device or a remote device with which the portable media player device is communicatively coupled, an audio signal that corresponds to the audio content and drives a speaker that is not part of the audio playback device using the audio signal to continue outputting the audio content and any additional audio content related to the audio content.

Example systems, apparatus, and methods receive audio information including a plurality of frames from a source device, wherein each frame of the plurality of frames includes one or more audio samples and a time stamp indicating when to play the one or more audio samples of the respective frame. In an example, the time stamp is updated for each of the plurality of frames using a time differential value determined between clock information received from the source device and clock information associated with the device. The updated time stamp is stored for each of the plurality of frames, and the audio information is output based on the plurality of frames and associated updated time stamps. A number of samples per frame to be output is adjusted based on a comparison between the updated time stamp for the frame and a predicted time value for play back of the frame.

Embodiments are disclosed for techniques to detect electronic system modification. The techniques include causing an electronic system to perform a predetermined set of routines. The techniques also include generating field scans of the electronic system while the predetermined set of routines is performed. The techniques further include comparing the field scans to baseline scans of the electronic system. Additionally, the techniques include determining that one of the field scans and one of the baseline scans are different. Further, the techniques include identifying at least one difference between the one field scan and the one baseline scan.

An information verification method and related device are provided. In the method, a fluorescent signal may be obtained, where the fluorescent signal is an electrical signal generated based on a plurality of fluorescent spots, and the fluorescent signal includes a plurality of pulse signals; an information symbol corresponding to each pulse signal may be determined based on a preset amplitude threshold and an amplitude of each pulse signal; an information sequence may be obtained based on the information symbol corresponding to each pulse signal; and a verification result of the information sequence may be obtained based on a first quantity of pulse signals between any two pulse signals in the plurality of pulse signals and a time interval between the any two pulse signals. According to the application, resulting in an error in information content corresponding to the read signal can be resolved.

To provide a multi-gear error correction code (ECC) decoder using a fast low power decoder and a slow high power decoder.SOLUTION: A multi-gear ECC decoder includes a high power decoder and a low power decoder. In order to significantly reduce the decoding time for high-BER codewords using a slow high power decoder, rather than decoding codewords in either slow high power or fast low power, a controller switches between slow high power decoding and fast low power decoding during the decoding process. The controller first will determine, based on a predetermined factor, whether to start decoding in slow high power or fast low power. Once a decoding power is determined, then the decoding will begin. During the decoding process the decoding transitions from a first power lever decoder to a second power level decoder. The decoding will continue in the second decoding power level after the transition, until the decoding is completed or if another switch needs to occur for insufficient decoding.SELECTED DRAWING: Figure 2

Provided are a disk device and a parameter setting method for the disk device. The disk device includes a control object, a controller that controls the operation of the control object, a loop shaping filter that is connected in parallel to the controller, determines a parameter for suppressing a rotational asynchronous disturbance using a transfer function from an output thereof to an input of the rotational asynchronous disturbance acting on the control object, and a notch filter that suppresses resonance of a head. In a case where the control object is changed due to manufacturing fluctuations and the like, the loop shaping filter is redesigned while reflecting a change in the transfer function, while the parameter of the notch filter is changed in accordance with the change. Thus, even in a case where the characteristics of an actuator as the control object differ from those at the time of design, the NRRO disturbance can be suppressed as intended, and the positioning accuracy of the head can be improved.

To improve accuracy of current detection.SOLUTION: An A / D converter converts an error signal VERR based on an error between a current feedback signal VFB and a reference signal VDAC into a digital signal DERR at the timing of an S / H signal. In a first mode, a compensator uses a value A1 of the error signal captured by the A / D converter at the timing of a negative edge of a first pulse PWMA as a value A1' of the error signal at the timing of a positive edge of a second pulse PWMB.SELECTED DRAWING: Figure 4

To provide a method and a system that distribute audio instructions from an administrator site at a client site.SOLUTION: A method is so adapted that predetermined information for associating a plurality of labels with client site-specific identifiers of respective time schedules, audio zones and audio sources is accessed for one or each of a plurality of client sites, and a generalized audio instruction generates an audio instruction specialized for the one or each of the plurality of client sites by using the predetermined information, and the audio instruction specialized for the client site includes a client site-specific identifier associated with a plurality of labels in the generalized audio instruction. As final means for distributing audio instructions at the one or each of the plurality of client sites, the specialized audio instruction generated for the client site is executed.SELECTED DRAWING: Figure 3