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公开(公告)号：US3681756A
公开(公告)日：1972-08-01
申请号：US3681756D
申请日：1970-04-23
Applicant: INDUSTRIAL RESEARCH PROD INC
Inventor： BURKHARD MAHLON D , PETERS RICHARD W
CPC classification number: G10L21/00
Abstract: A system for multiplying the frequencies of a speech signal, or other audio signal, by a given multiplication factor, comprising an analog-digital converter for converting an audio signal to a digital signal having a bit rate f1 and means for temporarily storing that digital signal. The system further comprises apparatus for reading out the stored digital signal, in groups of n digits, at a bit rate f2, with means for synchronizing the readout apparatus to connect the groups of n digits in sequence. A digital-analog converter uses the digital readout to develop a speech signal modified in frequency in accordance with the rate f1/f2 but having the same time span as the original speech signal.
Abstract translation: 一种用于将语音信号或其他音频信号的频率乘以给定乘法因子的系统，包括用于将音频信号转换为具有比特率f1的数字信号的模拟数字转换器，以及用于临时存储该数字信号的装置 。 该系统还包括用于以比特率f2以n位数组的方式读出存储的数字信号的装置，具有用于同步读出装置以依次连接n位数组的装置。 数字模拟转换器使用数字读出器来根据速率f1 / f2开发频率修改的语音信号，但是具有与原始语音信号相同的时间跨度。
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公开(公告)号：US3681531A
公开(公告)日：1972-08-01
申请号：US3681531D
申请日：1970-09-04
Applicant: INDUSTRIAL RESEARCH PROD INC
Inventor： BURKHARD MAHLON D , PETERS RICHARD W
Abstract: A plural sound delay system for use in sound reinforcement in auditoria and in other applications, comprising a digital encoding system for converting an analog audio signal to digital form, a progressive digital data store for storing the digital signal, plural readout means for reading data from the store after any one of a plurality of different storage intervals, and at least one decoding system for regenerating a delayed audio analog signal from one of the digital readouts.
Abstract translation: 一种用于听觉和其他应用中的声音增强的复数声音延迟系统，包括用于将模拟音频信号转换为数字形式的数字编码系统，用于存储数字信号的渐进式数字数据存储器，用于从 存储在多个不同存储间隔中的任何一个之后的存储器，以及用于从数字读出中的一个重新生成延迟的音频模拟信号的至少一个解码系统。
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