Abstract:
In an adaptive transform coding system and/or and adaptive transform decoding system, coding efficiency in the case where a small number of quantized values having large absolute value are present, is improved. The adaptive transform coding system codes the small number of quantized values having large absolute values and other quantized values are coded separately. More particularly, the adaptive transform coding system includes a selector (6) discriminating the small number of quantized value having large absolute value from other quantized value, a pulse coding means for coding the small number of quantized values having large absolute values (8) and the pulse decoding means (16) for decoding the same, a coding means (7) for coding the quantized value other than those having large absolute values and a decoding means (15) decoding the same, and a synthesis means (18) for synthesizing the small number of quantized values having large absolute value and other quantized values.
Abstract:
An information processing device of the present invention includes: a display portion that displays an image; a remote control information receiving portion that receives operation information transmitted from an external operation device; a content determination portion that determines, based on the received operation information, an instructed position and an operation content that are instructed by the external operation device with respect to the display portion; a cursor screen inside-outside determination portion that determines whether the instructed position is on an inside of the display portion; and a screen outside operation portion that performs control such that an action in accordance with the instructed position and the operation content is performed when it is determined that the instructed position is on an outside of the display portion.
Abstract:
In a coded speech decoding system, an n-channel time domain speech signal is converted to a frequency domain speech signal. A predetermined weighting adding process is executed on the frequency domain speech signal for each of a plurality of different transfer functions. The frequency domain speech signal obtained through the weighting adding process is converted to an m-channel (m
Abstract:
The information processing device of the present invention includes: a display portion that displays objects that respectively performed a function assigned in advance by being selected; an operation portion that inputs operation information to select one of the objects; and a control portion that displays supplementary information linked to the object on the display portion, based on the operation information. The control portion, based on predetermined conditions, performs a first process to display first supplementary information on the display portion. If operation information is not newly input during a prescribed period of time after the first process is performed, the control portion performs a second process to acquire second supplementary information and display the second supplementary information on the display portion.
Abstract:
The information processing device of the present invention includes: a display portion that displays objects that respectively performed a function assigned in advance by being selected; an operation portion that inputs operation information to select one of the objects; and a control portion that displays supplementary information linked to the object on the display portion, based on the operation information. The control portion, based on predetermined conditions, performs a first process to display first supplementary information on the display portion. If operation information is not newly input during a prescribed period of time after the first process is performed, the control portion performs a second process to acquire second supplementary information and display the second supplementary information on the display portion.
Abstract:
A hierarchical lossless encoding and decoding technology for digital signals such as of music data, audio data, or the like. A lossless reproduced signal is made identical to an input signal even when the processing accuracy in an encoding apparatus and the processing accuracy in a decoding apparatus are different from each other. the encoding apparatus transmits low-bit-rate encoded data produced by encoding an input signal, lossless encoded data produced by effecting lossless encoding on a differential signal between a low-bit-rate decoded signal decoded from the low-bit-rate encoded data and the input signal, and corrective information extracted from the low-bit-rate decoded signal to respective input terminals of the decoding apparatus. A low-bit-rate decoder decodes the low-bit-rate encoded data. A lossless decoder decodes the differential signal. A corrector corrects the low-bit-rate decoded signal based on the corrective information. An adder adds the differential signal and the corrected low-bit-rate decoded signal into a lossless reproduced signal.
Abstract:
An audio decoding apparatus decodes high frequency component signals using a band expander that generates multiple high frequency subband signals from low frequency subband signals divided into multiple subbands and transmitted high frequency encoded information. The apparatus is provided with an aliasing detector and an aliasing remover. The aliasing detector detects the degree of occurrence of aliasing components in the multiple high frequency subband signals generated by the band expander. The aliasing remover suppresses aliasing components in the high frequency subband signals by adjusting the gain used to generate the high frequency subband signals. Thus occurrence of aliasing can be suppressed and the resulting degradation in sound quality can be reduced, even when real-valued subband signals are used in order to reduce the number of operations.
Abstract:
To provide an audio signal quantization device in which an amount of arithmetical operation can be reduced. A 0.75-power computing apparatus includes: an inverse number computing unit; a first −0.5-power computing unit; a multiplication unit; a second −0.5-power computing unit; and a program storage medium that is connected to an outside, whereby a program stored in the program storage medium is executed to compute the 0.75-power in a quantization computing expression. The inverse number computing unit, the first −0.5-power computing unit, the multiplication unit, and the second −0.5-power computing unit operate in such a manner that a multiplication between an infinity and zero which leads its operation result to an indefinite value is inhibited.
Abstract:
In a data compression device having a plurality of Huffman coders given identification (ID) values, respectively, to produce Huffman codes together with the corresponding ID codes obtained from the ID values, a re-coding portion is included to change a sequence of the ID values so that a reduction is accomplished about a code amount of the Huffman codes and the ID codes obtained from the ID value sequence and is operable to re-code an input data sequence again by Huffman coders indicated by the changed ID values. Such re-coded Huffman codes and ID codes based on the changed ID values are produced as output data signals.
Abstract:
A wideband, high quality audio signal is decoded with few calculations at a low bitrate. Unwanted spectrum components accompanying sinusoidal signal injection by a synthesis subband filter built with real-value operations are suppressed by inserting a suppression signal to subbands adjacent to the subband to which the sine wave is injected. This makes it possible to inject a desired sinusoid with few calculations.