摘要:
Provided are an audio data encoding method and apparatus including determining an initial scale factor value for each frequency band of the audio data according to a quantization error and a maximum permissible distortion level for each frequency band; comparing the initial scale factor value for each frequency band and a predetermined common scale factor value and determining a final scale factor value for each frequency band based on a comparison result; quantizing the audio data using the final scale factor value for each frequency band; and encoding the quantized audio data.
摘要:
The present invention discloses an automatic precharge apparatus of a semiconductor memory device. An object of the present invention is to perform a sable precharge operation unrelated to change of the clock frequency by controlling to perform an precharge operation after constant delay time, regardless of an external clock signal. The automatic precharge apparatus of a semiconductor memory device comprises an automatic precharge signal generating unit receiving external control signals and then generating an internal precharge command signal, and outputting an automatic precharge signal by using the internal precharge command signal and control signals being related to a bust operation, a ras precharge signal generating unit for generating a ras precharge signal by receiving the automatic precharge signal, a delay unit for outputting a write recovery signal with a constant delay time, which is disabled in the reading operation and only enabled in the writing operation, when an internal precharge command signal is inputted, a ras generating unit for generating a ras signal without a delay time when inputting an external precharge command signal, whereas after a constant delay time in response to the write recovery signal when inputting the ras precharge signal.
摘要:
The present invention relates to a row address strobe signal generating device for a semiconductor memory device, and in particular a row address strobe signal generating device which can prevent a cell data from being destroyed during a data maintenance time, by sufficiently obtaining a writing time of the cell data. The row address strobe signal generating device includes a write recover signal generating device, and thus controls a disable state of a row address strobe signal during a write operation. Accordingly, the row address strobe signal is disabled only after a write recover signal is disabled. As a result, a cell data writing time is sufficiently obtained in a high speed memory, and thus the stored cell data is not destroyed during the data maintenance time.
摘要:
Disclosed is an apparatus for encoding and decoding a multi-channel audio signal. The apparatus for encoding the multi-channel audio signal groups channels of a multi-channel audio signal, eliminates redundant information between channels using a mixing matrix including phase information, converts a frequency of the signal, and encodes the signal.
摘要:
A noise filling method is provided that includes detecting a frequency band including a part encoded to 0 from a spectrum obtained by decoding a bitstream; generating a noise component for the detected frequency band; and adjusting energy of the frequency band in which the noise component is generated and filled by using energy of the noise component and energy of the frequency band including the part encoded to 0.
摘要:
A bit allocating method is provided that includes determining the allocated number of bits in decimal point units based on each frequency band so that a Signal-to-Noise Ratio (SNR) of a spectrum existing in a predetermined frequency band is maximized within a range of the allowable number of bits for a given frame; and adjusting the allocated number of bits based on each frequency band.
摘要:
An apparatus and method for encoding and decoding a spatial parameter are provided. A spatial parameter encoding apparatus may encode a spatial parameter using a correlation between spatial parameters indicating a characteristic relationship between channels of a multi-channel audio signal, so that the multi-channel audio signal may be efficiently encoded.
摘要:
A hardmask composition for processing a resist underlayer film includes a solvent and an organosilane polymer, wherein the organosilane polymer is represented by Formula 6: In Formula 6, R is methyl or ethyl, R′ is substituted or unsubstituted cyclic or acyclic alkyl, Ar is an aromatic ring-containing functional group, x, y and z satisfy the relations x+y=4, 0.4≦x≦4, 0≦y≦3.6, and 4×10−4≦z≦1, and n is from about 3 to about 500.
摘要:
An apparatus for encoding/decoding a multichannel signal. The apparatus for encoding/decoding a multichannel signal processes phase parameters for phase information among a plurality of channels constituting the multichannel signal in consideration of the characteristics of the multichannel signal. The apparatus generates an encoded bit stream for the multichannel signal using the processed phase parameters and the mono signal extracted from the multichannel signal.