摘要:
The present invention relates to a signal processing apparatus and a signal processing method, an encoder and an encoding method, a decoder and a decoding method, and a program capable of reproducing music signal having a better sound quality by expansion of frequency band.An encoder sets an interval including 16 frames as interval section to be processed, outputs high band encoded data for obtaining the high band component of an input signal and low band encoded data obtained by encoding the low band signal of the input signal for each section to be processed. In this case, for each frame, a coefficient used in estimation of the high band component is selected and the section to be processed is divided into continuous frame segments including continuous frames from which the coefficient with the same section to be processed is selected. In addition, high band encoded data is produced which includes data including information indicating a length of each continuous frame segment, information indicating the number of continuous frame segments included in the section to be processed and a coefficient index indicating the coefficient selected in each continuous frame segment. The present invention is applicable to the encoder.
摘要:
An encoding apparatus that divides an input time series signal into a plurality of sub-bands and encodes a low frequency sub-band signal to generate encoded data of the low frequency sub-band signal. Concurrently, it compares the frequency amplitude peak of the new high frequency sub-band signal generated from the low frequency sub-band signal and the original high frequency sub-band signal and generates frequency amplitude peak information of the high frequency sub-band signal. It compares the gain of the new high frequency sub-band signal generated by using the low frequency sub-band signal and the original high frequency sub-band signal and generates gain information of the high frequency sub-band signal. Subsequently, the signal encoding apparatus multiplexes the encoded data of the low frequency sub-band signal, the frequency amplitude peak information of the high frequency sub-band signal and the gain information of the high frequency sub-band signal and outputs compressed data.
摘要:
The present invention provides a signal processing apparatus, a signal processing method and a program for outputting a high-quality coded string. A signal processing apparatus according to an embodiment of the present invention includes a normalization coefficient information increasing/decreasing circuit 12 for modifying normalization coefficient information of a signal component of a frame and normalization coefficient information of a primary additional signal component according to a normalization coefficient information primary increase/decrease amount, and an additional signal component normalization coefficient information increasing/decreasing circuit 14 for modifying normalization coefficient information of a secondary additional signal component, which is a copy of the primary additional signal component, according to a normalization coefficient information secondary increase/decrease amount.
摘要:
An apparatus for mapping multiple lower-speed signal transmission frames to a higher-speed signal transmission frame. The apparatus includes buffers configured to buffer the lower-speed signal transmission frames, determination units configured to determine frequency justification information for the lower-speed signal transmission frames, a barrel shifter configured to receive signals output from the buffers, and a controller configured to control the barrel shifter to map the lower-speed signal transmission frames to the higher-speed signal transmission frame based on external settings for the respective lower-speed signal transmission frames and the frequency justification information determined by the determination units. When the minimum unit of the lower-speed signal transmission frames is a channel, the number of the buffers and the number of the determination units correspond to the maximum number of channels that can be multiplexed in the higher-speed signal transmission frame.
摘要:
The present invention is a transmission system, a path control method, and a transmission device, and is the path control method in the transmission system forming a virtual concatenation group by virtually concatenating each path signal transmitted through a plurality of paths being a logical communication path, which manages an active state and a stand-by state of member paths of the virtual concatenation group and when there is abnormality in any of the member paths in the active state, controls any of the member paths in the stand-by state to the active state in place of the abnormal member path, thereby realizing more flexible and efficient path level redundancy.
摘要:
In a path status monitoring method and device which can enhance or reduce a band more rapidly, for example, SONET frames FR serially connected over 32 frames to which frame Nos. FN (“0”-“31”)) are assigned are cyclically generated respectively for paths P0-P2 in a cycle TC (=64 ms). After output timing delays TD0-TD2 of the frames FR are shifted by an optimal delay interval D (=21 ms) between the paths P0-P2 based on the number of the paths “3”, the output timing delays TD1 and TD2 are restored by preliminarily obtained transmission delays for the paths P1 and P2 to the path P0. When the frames FR are transmitted through each of the paths P0-P2, statuses (path statuses MST) where a reception fault has occurred in each of the paths P0-P2 are collected to be stored in the frame whose frame No. FN=“0”.
摘要:
A frame transfer device includes a transfer portion that transfers a client signal in parallel with use of a plurality of lanes, a frame generation portion that is provided on each of the lanes and accommodates the client signal in an accommodation frame according to a bit rate of each of the lanes without multi distribution termination process to the client signal transferred from the transfer portion, and a multiplex transmission portion that multiplexes and transmits a plurality of frames generated by the frame generation portion.
摘要:
In a path status monitoring method and device which can enhance or reduce a band more rapidly, for example, SONET frames FR serially connected over 32 frames to which frame Nos. FN (“0”-“31”)) are assigned are cyclically generated respectively for paths P0-P2 in a cycle TC (=64 ms). After output timing delays TD0-TD2 of the frames FR are shifted by an optimal delay interval D (=21 ms) between the paths P0-P2 based on the number of the paths “3”, the output timing delays TD1 and TD2 are restored by preliminarily obtained transmission delays for the paths P1 and P2 to the path P0. When the frames FR are transmitted through each of the paths P0-P2, statuses (path statuses MST) where a reception fault has occurred in each of the paths P0-P2 are collected to be stored in the frame whose frame No. FN=“0”.
摘要翻译:在可以更快速地增强或减少频带的路径状态监视方法和装置中,例如,循环地生成分配了帧号FN(“0”〜“31”)的32帧的串行连接的SONET帧FR 分别用于循环T C C(= 64ms)中的路径P 0 -P 2。 在帧FR的输出定时延迟之后,在路径P 0 -P 2之间移动最佳延迟间隔D(= 21ms) 基于路径“3”的数量,通过预先获得的路径P 1和P的传输延迟来恢复输出定时延迟T 1 D 2和T 2 D 当通过路径P 0 -P 2中的每一个发送帧FR时,将各路径P 0 -P 2中发生接收故障的状态(路径状态MST)收集为 存储在帧号FN =“0”的帧中。
摘要:
The present invention discloses a method for controlling a physical bandwidth of a ring-based network by employing a ring application of a data link layer that operates in a physical layer. The method includes the steps of a) requesting each of a plurality of node apparatuses included in the ring-based network to confirm whether the bandwidth can be changed, b) instructing each node of the apparatuses to prepare for the bandwidth change upon receiving a confirmation that the bandwidth can be changed, c) reporting that the preparation for the bandwidth change is completed, and d) changing the bandwidth by using a bandwidth changing function of the ring application upon receiving the report of the completion of the preparation for the bandwidth change.
摘要:
An electric device is provided that can provide an electronic device capable of maintaining the temperature in an apparatus approximately constant at a low cost without installing any temperature sensor. In a method of controlling the number of revolutions of forced-air-cooling fans in an electronic device having a plurality of circuit boards and the forced-air-cooling fans that discharge the heat generated from the plurality of circuit boards through ventilation, and each of which is equipped with a filter, the optimal number of revolutions for each fan is obtained from the relation between the accumulated time of use of the filter and the power consumption of the plurality of circuit boards mounted in the electronic device and a driving current of the forced-air-cooling fans is controlled such that the number of the revolutions becomes the obtained number of revolutions.