公开(公告)号：WO1983001526A1

公开(公告)日：1983-04-28

申请号：PCT/SE1982000339

申请日：1982-10-20

Applicant: KÖHLER, Hans, Olof ,  STRÖMVALL, Sten, Kenneth

IPC: G10L01/00

CPC classification number: G10L15/00

Abstract: A method and apparatus for determining concordance between an analysis signal with at least one reference signal. The smoothed signals or envelopes are formed of a signal which is to be examined and at least one reference signal. A pulse train is generated for each of the smoothed signals or envelopes, and comprises pulses present during the time for a predetermined polarity of the smoothed signal or envelopes relative a threshold signal. The pulse trains are compared at regular intervals with each other, simultaneous coincidence of pulses in both trains at a predetermined number of consecutive comparisons constituting the criterion that the signals which are to be examined are in concordance with the reference signal. For carrying out this signal examination there are means (2, 4) adapted for forming said smoothed signals or envelopes of the signals. The outputs from said means are connected to one input of a comparator (6) for each signal. A threshold signal (URef1, URef2) is applied to the second input of the comparators for generating an output pulse train comprising pulses generated at a predetermined polarity of said smoothed signals or envelopes relative the threshold signals. Means (12, 14, 16, 18) are further adapted for comparing the pulse trains and registering simultaneous coincidence of pulses in the two trains for a predetermined number of consecutive comparisons as the criterion that the examined signal and a given reference signal are in concordance. The invention is primarily intended for utilizing in automatic debiting of utilized video service in a hotel or the like. The invention may also be used for monitoring processes or machines which have specific sound spectra for faults.

Abstract translation: 一种用于确定具有至少一个参考信号的分析信号之间的一致性的方法和装置。 平滑的信号或信封由待检查的信号和至少一个参考信号形成。 为每个平滑的信号或包络生成脉冲串，并且包括在平滑信号的预定极性的时间期间存在的脉冲或相对于阈值信号的信封。 脉冲序列以规则的间隔相互比较，两个列中的脉冲在预定数量的连续比较中同时重合，构成要被检查的信号与参考信号一致的标准。 为了执行该信号检查，存在用于形成信号的所述平滑信号或信封的装置（2,4）。 所述装置的输出连接到每个信号的比较器（6）的一个输入端。 阈值信号（URef1，URef2）被施加到比较器的第二输入端，用于产生输出脉冲序列，该输出脉冲串包括相对于阈值信号以所述平滑信号或包络的预定极性产生的脉冲。 装置（12,14,16,18）进一步适用于比较脉冲序列并将预定数量的连续比较的两列中的脉冲同时重合，作为检查信号和给定参考信号一致的标准 。 本发明主要用于在酒店等中自动借记利用的视频服务。 本发明还可以用于具有用于故障的特定声谱的监视过程或机器。